2017年09月26日

Hollow bar micropiles

Using hollow grouting anchor to support the large section permanent chamber, realize the bolting and grouting integration, improve the bearing capacity of anchor cable, and decrease two sides and the deformation amount between roof and floor of roadway, the roof deep separation has been effectively controlled, achieved good supporting effect, and saved the reinforcement support cost, which indicate that the bolting and grouting methods on the basis of hollow grouting anchor to the stability of large cross section chamber has significant effect, it is worthy of popularization and application.
The hollow bar technique have been used in the United States as a self-grouting soil nails which replaces the traditional drill and grout method. The drilling, installation and grouting of nailing in this method is combined into one single step. This method proves to be advantageous for caving ground conditions and was initially employed for temporary shoring applications.

The accessories for hollow core bar soil nails include washers, nuts, bearing plates, couplers and centralizers.The drill rig used on soil nailing projects using hollow core bars has the capacity to adapt to various sizes of hollow core bars and drill bits. Hydraulic rotary or rotary percussion drill rigs are commonly used. The rigs can be tack mounted or excavator mounted .The versatility of drilling rigs and concurrent drilling, installing and grouting procedure of hollow soil nails have worked well for remote access.

Sinorock hollow bar system is the efficient and economical solution to enhance reinforcement for Construction,so believe Sinorock.Choose us!  

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2017年09月22日

Rock reinforcement bar

Deep foundation excavation project is developing towards great depth, large area, high technology and big difficulty. It is usually constructed in dense building group and restricted by place, surrounding buildings, underground pipelines, etc. Safe slope has not enough room, so it is limit for deep foundation’s stabilization and deformation control. Large scale excavation and support system should be designed to ensure construction go on wheels.

Deep foundation excavation is temporary, if support system is not rational, it will probably cause severe consequence. According to different soil texture condition, construction technology, equipment level, choosing rational and economic supporting structural concept is always an important content in researching support problem of deep foundation excavation projects.
Sinorock hollow bar system is used for deep foundation, Sinorock hollow anchor bolt for rock reinforcement is a supporting method with higher efficiency, higher reliability, more obvious supporting effect and more extensive application. It can reinforce surrounding slope and prevent deformation, settlement, deformation and collapse effectively.  

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2017年09月14日

Grouting hollow bar

The self drilling hollow anchor bar is a new type anchor bolt which combines the function of the anchor bar and the grouting pipe. It is full of grouting, but also pressure grouting, to avoid the mortar loose caused by the pulling out of grouting pipe during construction. And because of the role of the accessories, the centered performance of anchor bars are good, which can be wrapped in full length to improve the quality of the project for solving many traditional problems in the anchoring system, which applied to the anti-floating of underground engineering, and it can better solve the other forms of anti-floating anchor rods in the soil, especially in the silt and muddy soil layer drilling easily caused by the collapse and necking problems, with a high promotional value.

In order to solve the problems of steep— inclined limestone,poor self support capability of weak and soft shale and difficulties in the control of the rock mass deformation in the construction of the underground powerplant of Pengshui hydropower station,the new technology of expansion and prestressed type hollow grouting bolt with steel wedge is adopted to reinforce the shallow— covered rock mass.The anchor piers with steel plates,which are used to replace the original concrete anchor piers, can simplify the construction technology,ensure the construction quality and enhance the construction speed.Thus,the wall rocks are deeply and immediately anchored and the deformation risks of the wall rocks are minimized.The comprehensive application of the new anchoring technology ensures the shallow and/or deep anchoring quality in soft and weak shale.In addition,the new technology results in significant economic and social benefits and can be popularized.

Sinorock is recognized for its excellent quality, delivery performance, innovative management and perfect service system. In addition, many products we have developed have become industry standards. The products we are provide all kinds of self drilling hollow bar and the corresponding accessories. Our self drilling hollow anchor bolt products received the consistent high praise by the customers. Till now, Sinorock has become one of the famous self drilling hollow bar suppliers.  

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2017年09月08日

Injection support hollow bar

Foundation pit support is a kind of protective measure for surrounding condition and side wall. It has the effect of reinforce and support. Foundation pit support, as a structural system, should meet demand of stability and anti-deformation.
The Sinorock injection hollow bar has some advantages for foundation pit
1. Low cost.

Compared with traditional supporting technologies, hollow injection anchor effectively decreases input and transport of supporting materials, then reduces materials’ cost.

Because hollow injection anchor penetrates into surrounding rock body, tunnel cross-section doesn’t need to be taken up, at design, it can decrease cross-sectional area, which will save excavation cost.

The stability of hollow injection anchor supporting is good, it can decrease amount of maintenance and then reduce cost of maintenance.

2. Rapid supporting function.

Compared with traditional supporting patterns, hollow injection anchor has small amount of materials and light weight, which can fasten transport speed and improve excavation efficiency.

During excavation, application of hollow injection anchor can reduce workers’ labor intensity, decrease operation procedure and improve working efficiency.

Hollow injection anchor combines drilling, grouting and anchoring together, construction procedure is simple. It can realize rapid surrounding rock support.

3. Good supporting effect.

Through analysis of hollow injection anchor supporting mechanism, hollow injection anchor belongs to active support. Using rock bodies’ self-supporting capacity to form stable structures, which can improve stability of integrity.  

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2017年08月29日

Reinforced hollow bar

Self drilling hollow bar support is an active form of support, the support has the advantages such as low cost, fast supporting speed, low labor intensity, especially greatly simplifies the mining working face end support and advanced support technology, provides security for the rapid development of coal mining face. It is an important supporting technology for coal mine development in recent years.

The problems existing in the tail of the self drilling hollow anchor rod is prominent in the period of application process,due to eccentric load, the tail of the strength is not enough, the extension rate is not enough, leading to the supporting effect of variation, for this problem, the high strength thick tail self drilling hollow bolt anchor tail through special processing, the tail of the grain refinement to improve the shape and intensity of the self drilling hollow anchor bolt’s tail, brittle increase caused by defects in the heat treatment process has changed before, not only improves the anchor tail strength, but also improve the elongation of self drilling hollow anchor bolt’s tail . Field applications have also proved that this technology has greater advantages.
Self drilling hollow bar’s designed tension is mainly depended by possibility, reliability and convenience of construction technique.

If tension designs too big, accordingly, the cross section and gravity are big, then it is difficult for inserting into hole and construction quality cannot be guaranteed, also it’s not easy to handle if tension test and validation test have problems; if tension designs too small, the amount of hollow anchor bolt should need many and the price costs high.

After confirming self drilling hollow bar’s tension, the design of cross section should depend on the design method of tensile bar, at the same time, the demand of construction should be readjusted if necessary.

The hollow anchor bolt’s head coupling should be designed basing on the principle design of prestressing force.

After confirmation of hollow anchor bolt, it’s necessary to calculate structures’ stability. If stability of structures can’t reach demand, the design of hollow anchor bolt should be reconsidered even if the design of every part of anchor bolt is reasonable and economic. Lengthening hollow anchor bolt, calculating again and consulting relevant calculation method to ensure stability of soil and rock, quality of projects.  

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2017年07月25日

Anchor bar supporting

Self drilling anchor bar is a new supporting method under new situation, it adopts special working technology to combine drilling, grouting and anchoring together. All working procedure can be done in one process, so construction is time-saving, energy-saving and high-efficient. It belongs to active support during the whole construction. Recent years, with increase of power demand, hydroelectric station is constructed more and more.
Self drilling anchor in hydroelectric station mainly reflects on dam foundation, diversion tunnel and slope reinforcement. So, it has great influence on hydroelectric station.

Self drilling anchor support can take full advantage of soil body’s self-bearing capacity. Compared to shotcrete support, it has characters of safety, high efficiency and convenience. It can be operated at small spaces, so under allowable condition, adopting self drilling anchor can enhance efficiency largely.

1. Applicability.

Generally speaking, self drilling anchor is suitable for foundation pit support or slope reinforcement with artificial soil, clayey soil and weak cement sandy soil above underground water or after artificial precipitation.

2. Engineering investigation.

Engineering investigation is an essential work for ensuring project’s safety and reliability. As for self drilling anchor project, two points should be noticed specially: underground pipelines and underground water. Distribution of underground pipelines and underground water should be listed in investigation report in order to do design work in advance.

3. Design and monitor problems.

Based on soil condition, soil deformation and stressed condition of self drilling anchor, distance and length of self drilling anchor should be adjusted.

Correct and reasonable design is the precondition for ensuring construction quality, which directly influences engineering safety, duration and economic investment.

Monitoring work mainly includes horizontal deformation, settlement, stress force of self drilling anchor and soil pressure. They can be chosen according to practical situation.  

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2017年07月13日

Reinforcement hollow bar

Hollow bar anchor has the effect of binding, combining and reinforcing surrounding rocks. It helps to improve rocks’ self-intensity and self-stability, lighten self-gravity, and ensure safety and stability of projects. So most countries in the world have began to use this kind of technology.
The hollow bar system are an efficient, economical, and simple solution to enhance reinforcement for mining,tunneling,hydroelectic and civil construction.
Sinorock gains high reputation from customers home and abroad by the implementation of the business philosophy of customer orientation.Sinorock pays great attention to quality improvement of products and promote development of Chinese bolt industry, and gained a lot of rewards from competent national authorities.
Our hollow anchor bar system for Slope stabilization of excavations for road and railway construction, tunnel portals.
It is a technique used to reinforce and strengthen existing ground conditions of slopes and battered cuttings, and offers a rapid and economical alternative to the traditional methods.
Foundations Reinforcement.
It is used for increasing of foundation capacity or settlement control on existing structures.  

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2017年07月07日

Self drilling anchor support

Self drilling anchor support can take full advantage of soil body’s self-bearing capacity. Compared to shotcrete support, it has characters of safety, high efficiency and convenience. It can be
operated at small spaces, so under allowable condition, adopting self drilling anchor can enhance efficiency largely.

Sinorock self drilling anchor can be used as the micropiles,here some advantages of self drilling anchor as micropile:
1. High work efficiency
Self drilling anchor system is usually used as a micropile. The hollow anchor bar can be regarded as a disposable drill rod, grouting pipe and reinforcement bar, so it can realize drilling, installation and grouting in one step. Without casing and grouting pipe, self drilling anchor can drill and grout directly. The operation steps will be less, the work efficiency will be higher, and the workload will be reduced.

2. Good anchoring effect
The friction between the micropile and the soil is high. The slurry can cover all the cracks around the drill hole, which can reach a good corrosion protection effect.

3. Strong adaptability
The full length of threaded hollow anchor bar can be cut arbitrarily. Self drilling anchor is suitable for small lightweight drilling equipment. It also can be used in remote areas or limited space where large equipment can not reach, such as steep slope, wet land, dock foundation, basement, overpass, etc.

4. Environmental protection
(1) Rotary percussion drilling causes low noise and small vibration.
(2) Both of self drilling anchor bolt and cement are environmentally friendly materials, without pollution to the soil.
(3) The drilling process has a lower pressure erosion effect on the surrounding environment, without damage to the nearby buildings.  

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2017年06月28日

Power hollow anchor bars

The construction method of self drilling anchor bar characterized by rapid construction has been successfully used in the construction of Beijing Metro Line 4, which has won valuable time for Olympic construction projects.

In unconsolidated/fractured ground conditions, self drilling hollow bars have become an irreplaceable product.

Sinorock® Self Drilling hollow bars are part of the excavation process and serve as primary soil/rock support for:

• Radial consolidation of the tunnel circumference supports the rock, forming a load bearing ring thus enabling the rock supporting itself (together with shot-create and other facing elements).

• Umbrellas and pore poling as pre-support in poor rock formation, shallow overburden and critical stress conditions.

• Face stabilization to sustain rock pressure for excavation with large cross sections.

• Root piles to divert stress.

The conventional method of installation involves drilling the Sinorock® Self Drilling hollow bars with water flush to the design layout and depth and in a second phase, independent of drilling, a grout adapter is added and a dense cement based grout mix is injected through the hollow core to exit through the flush holes at the drill bit filling the borehole annulus until the grout mix appears at the borehole mouth, once cured, enabling the transfer of stress from the rock/soil formation.



  

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2017年06月15日

Stong support-hollow bar

Heavy civil infrastructure projects can be some of the most difficult to coordinate and build. From site development and excavation to construction, coordinating utilities and site restoration there are many challenges faced on these complex projects.The reinforcement of expansive soil cutting slope has been a difficulty for the construction industry. And Sinorock carries a wide range of self drilling rock anchors to fit a variety of construction projects. You can choose among various lengths, load ratings and materials to find the perfect self drilling hollow anchor bars to safely complete your project.
Providing a ultimate load range from 261kN to 7909kN. All Sinorock self drilling rock bolt utilise a small diameter greased filled high density polyethylene sheathing, allowing for a greater number of individual strands to be contained in a given drill hole size.
Sinorock self drilling hollow anchor bars are used for rock reinforcement in Mining and Tunneling. Self drilling rock bolts limit the loosening of blocks out of the rock mass and shear displacements. Furthermore, the frictional force between individual rock layers is increased. Self drilling rock bolts with a variable anchor length enable pre-tensioning and thus an active force transmission.
There are also a great many other benefits of hollow anchor bar,include corrosion-prevention,long longevity,low density,environmental friendly,convenient,light,high tensile stress,easy cut,easy recycling,non-conducting and so on.
When you use hollow anchor bar of Sinorock, a large amounts of problems have been soloved in the manufacturing process and it is well apllicable to the poor ground conditions,such as loose soil,weak rocks,unsolidable layers and so on.
Sinorock's hollow anchor bar system is designed and fabricated to the international standards as set forth in the Post-Tensioning Institute’s Recommendations for Pre-stressed Rock and Soil Anchors. Bearing capacity is a function of the steel capacity as well as the geotechnical holding capacity.
Capacity of steel should be confined to 90% maximum test loading capacity and 60% lock-off load for permanent operation. Geotechnical capacity is a function of ground bond stress characteristics which can be moderated by necessary anchoring procedures.  

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2017年06月05日

Efficient Hollow threaded rod


Sinorock is a structural engineering company specializing in design for excellent hollow bar anchor system and is recognized as an industry authority in these fields.Sinorock's foremost strength is its innovative approach to solving unique engineering problems.
Sinorock has advanced hollow threaded rod factory,and we have completed more than 500 projects of specialist nature around the world, thus giving us a wealth of experience and understanding in this area of practice.Sinorock believes that ‘honesty is the best policy’, even in the highly competitive world of business. Throughout our twenty years of performance on the market,Sinorock has cultivated a reputation of integrity and professionalism in dealing with clients and business partners across the world, prioritizing your trust in us as the foundation of our company. Sinorock has been a complete manufacturing, marketing and sales company of “Anchor Systems” for over 10 years offering solutions worldwide to the utility and civil construction markets, landscape and horticultural markets and erosion control and specialty markets.


For these years,Sinorock has been renowned for its high quality products and technical expertise within the Building and Civil Engineering Industry.
Free technical support is available for all our customers in the Trade sector.Our technical advisory team can be contacted by phone, email or online.For technical advice or details of our extensive range of products please contact the Sinorock Technical Advisory Service. We will deal with any enquiries promptly.
Up to now,Sinorock hollow injection bolt systems have been exported to Asia, Oceania, Europe, Africa, North America,South America and widely used in tunneling, mining, hydroelectric station and civil construction. In future,Sinorock aims to be a global brand in the field of geotechnical anchoring.All this time, Sinorock is devoting itself to providing one-stop rock anchoring solution, which is safe, efficient, energy-saving and environment friendly, for global geotechnical anchoring projects.  

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2017年05月25日

Drilled hollow bar

Whether you are looking to construct or repair a commercial runway, apron, or taxiway with stringent ASFA specifications, or you are looking for a contractor that has the skill and expertise to meet the demands of the Department of Defense, Sinorock is your hollow bar supplier for civil construction of choice.
With high quality self drilling hollow anchor bar system ,Sinorock leading anchoring subjects have been exported to more than twenty countries and have been taken into use in a great many conditions like mines,tunnels,hydroelectric projects,civil constructions,transportations and other geological engineerings.
For mining applications, the Sinorock Drill Hollow Bar System is used as self drilling
rock bolt in areas of high stress at pillars, crossheads or abutments.
Other applications include the use of the self-drilling bar as an injection
conduit for resin, grout or water proofing agents.
Spiles provide a protective canopy, toenable the heading of a tunnel to be
advanced without the risk of falling debris. Often used with NATM
— New Austrian Tunneling Method —construction.
Sinorock Drill Hollow Bar System Spiles enable drilled installation, reducing
localised disruption and providinga conduit for grouting. Subsequent grouting assists in the consolidation of the surrounding ground.
Corrosion protection for the hollow grouted bars can be accomplished via any desired methods currently used. The force transmitting drill bit can be made of stainless steel, which can handle any compressive force that is place on it. The hollow soil nail bar is the only component of the system that experiences the tensile forces placed upon the system, which can also be made of stainless steel.
  

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2017年05月18日

Hollow bar for highway

For now, this highway is a bright spot for tourism, because it combines project with natural scenery. Of course, it is convenient for people’ life and will bring benefit to local people.But there are plenty of mountains and rivers in China, So highway must cross this area.
While based on complex geological conditions, the security and supporting effect are more important, so hollow bar system is quite necessary.

With the development of sedimentation, the amount of sediment is increasing and the volume turns bigger, which will bring difficulties for project. So based on terrain condition and projects’ safety, self drilling hollow bar plays a quite important role.
Self drilling hollow bar can not only make construction more convenient and efficient, but also have effect for permanent supporting.
Self drilling hollow bar, as an efficient anchoring method, usually applies in weak and broken conditions. As for the projects with severe sediment accumulation, it has much more advantages:
1. Self drilling hollow bar combines drilling, grouting and anchoring together, it is high-quality, time-saving and easy to operate.
2. Self drilling hollow bar adopts special thread on its surface, so it can connect with other assorted machines smoothly.
3. Self drilling hollow bar can be cut according to your demand.
4. Self drilling hollow bar can be used for permanent support in weak conditions. It has enough pre-stress to control the deformation of project.
  

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2017年05月15日

Strong hollow bar support

In recent years, as the demand of the engineering projects supporting operations and development,hollow bar support became the main material requirements.With the common application of hollow anchor bolt,anchor bolt suppliers and manufacturers also have occurred.
And the awarencess of quality is increasing,Sinorock is the best bolt manufacturer at the quality control,why Sinorock put the qualiy on the first,because quality is the life and soul of an enterprise.
As the leading self drilling hollow bar manufacturer,Sinorock focus on your requirements because the end result is as important to us as it is to you. That’s why we add value every step of the way whilst remaining on time and within budget.
Sinorock is the self drilling hollow bar manufacturer in the market for its strict quality control system.So choose us is equivalent to choose saftey.Sinorock is recognized for its excellent quality, delivery performance, innovative management and perfect service system.In addition,many products we have developed have become industry standards.The products we provide are all kinds of self drilling hollow bar and the corresponding accessories.Our products received the consistent high praise by the customers.Sinorock now is a reliable self drilling hollow bar manufacturer with the ISO & CE certificates.
Over years of progress have consistently made us realize that more than products,it is understanding the client’s requirement and giving maximum services to the customer is what makes us stand apart from others.
We strive to scale a new height in the industry by satisfying our customers with innovative range of quality products. We continuously bring improvements and think of new ways to make our products better.   

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2017年04月26日

Best hollow bar system

Self drilling hollow bar system has been widely used, it can create great effect on anchoring and restraining weathering by ejecting concrete.This kind of method can improve the whole carrying capacity of surrounding rocks and prevent collapse.In the field of
Self drilling hollow bar system manufacturing area,Sinorock should be put on the first place.

Self drilling hollow bar consists of hollow anchor bar, drill bit, anchor coupling, anchor plate, anchor nut. self drilling hollow bar combines drilling, anchoring, grouting in a single process.
For every part of the self drilling hollow bar, each accessory has its own function. Anchor coupling is used to connect two or more anchor bars together to extend the length of the self drilling hollow bar. Drill bit is used to drill hole in the rock. Anchor nut and anchor plate required tension.

Self drilling hollow bar can be installed into many kinds of soils and ground conditions, such as sand, gravel, inconsistent fill, boulders, rubble and weathered rock, and so on. self drilling anchor bolt can be used to soil nail for road widening, railway embankments, ground anchors temporyary works and sheet pile tie back. It also can be used to mini piles for stabilisation of footing and underpinning, roof bolts or spiles for tunneling.
Sinorock now manufactures and supplies a complete range of hollow anchor bar products and technical services to the related industries,such as the civil and tunnelling industries.
Sinorock acts as a strong partner and manufacturing hollow anchor bar supplier for the mining,
tunneling,slope stabilization and foundation support industry, devoted to provide the best products and services to its customers including design, development, production and galvanization with on demand construction installation services and maintenance options.
Sinorock’s hollow anchor bar system effectively improve the stability of underground rock masses.
The increased load bearing capacity of the rock conditions enables an early construction start, thus
providing both technical and economic advantages.  

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2017年04月05日

Cost-effictive hollow bar

Self drilling hollow anchor bar system, one of efficient supporting methods, has played important role in reinforcing and supporting engineering. As for underground engineering, such as metro station and foundation pit supporting, self drilling anchor system can bond itself to soil and ground, which can enhance integrity and cohesiveness, avoid deformation and collapse.
Before construction of self drilling anchor, there are several preparing works to be done:
1. Master conditions of basic and underground pipelines in construction area.
2. Judge adverse effects from self drilling anchor construction to surrounding structures and pipelines. Relevant precaution measures should be planned, in advance.
3. Test self drilling anchor’s production craft, methods of tension and lock, equipment.
4. Identify grouting craft and grouting equipment.
5. Check raw materials’ variety, quality, model and inspection report.
Main construction equipment during process are drilling machine and grouting equipment. Before equipment entering construction site, they should be checked completely.
There are two kinds of professional people at construction site: technical operator and contributor. To guarantee their safety, all the design and operation works should be abided by the rules, especially at underground and closed space.   

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2017年03月29日

Effective hollow bar system

The self drilling anchor system of Sinorock are a totally innovative and effective method for constructions.We work to provide you with as broad a range of innovative products as possible and we strive continuously to expand our current range and to develop products with a strong focus on durability and the environment.
Sinorock is a hollow bar manufacturer specializing in design for underground-projects—Sinorock for underground construction and is recognizedas an industry authority in these fields.Sinorock associates foremost strength is its innovative approach to solving unique engineering problems.The sizes we can provide include R25, R32, R38, R51, T30, T40, T52, T73, T76, T103, T111, T127, T130.
Sinorock hollow bar products have a wide range of applications in civil and tunneling industries, including tunnel reinforcement/refurbishment, cliff and slope reinforcement, wall stabilization, rock-netting retention, parapet wall reinforcement, and gabion basket anchors. It is Sinorock’s service-orientated philosophy and ultimate goal to offer the best in customer service while creating a win-win strategy for each customer.
Sinorock is proud to offer only the most durable, high-quality materials for any type of construction project. Our specialty is self drilling anchor,including coupler,anchor nut,centralizer,drill bit,anchor plate and hollow bar,etc.we are committed to providing our
customers with the self drilling anchor bolts they need for any project.
Sinorock offers one of the most complete line of construction self drilling anchor system and tools available in the marketplace today.Self Drilling anchor system eliminate separate drilling and tapping operations for faster, more economical installations.
Sinorock serves the construction industry by offering self drilling anchor system as the solutions that improve building integrity and ensure strength and performance under the most demanding conditions.
Sinorock self drilling anchor system products are found in some of the most remarkable structures in the world-many of which are built in seismic zones or face hurricane-force wind-and the company offers the widest range of support services in the construction industry.
  

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2017年03月21日

Reinforcement rods structure

Self drilling hollow anchor bar system is the rock and soil reinforcement rods structure. It is one of the main supporting forms of rock slope for underground,plays an important role on stability of civil engineering maintenance, especially it has obvious effect in the joints and fissures in rock mass and anchor rod on rock reinforcement.The self drilling anchor system of the alloy bit has strong penetrating power, under the action of rock drill, can easily penetrate all types of rock mass, and using the exhaust of the anchor head up thoroughly solve the problem above the horizon of the grouting exhaust.
Recent years, self drilling anchor is a new method for supporting global projects, which
has been applied in several projects, such as civil construction, mining, hydroelectric
station and tunneling.Self drilling anchor bolt can not only make construction more
convenient and efficient, but also have effect for permanent supporting. Stainless self
drilling anchor bolt and duplex coating rock bolt are all the anti-corrosion products in
Sinorock. They have not only beautiful appearance, anti-corrosion quality, but also good
strength and high wear resistance.

Sinorock high quality self drilling anchor system works to stabilise foundations and support
structures for excavation, making worksites safer. We work closely with geotechnical
engineers to assist with project design and selection of anchor type after consideration of
ground conditions, ensuring lasting integrity of all our self drilling anchor systems.
Sinorock is your trusted resource for the best tools and accessories for construction and
concrete. We have the highest quality self drilling anchor bolt that are sure to meet your
needs. Our products are offered at competitive prices and are from the best industry brands.
If you want to place a single order or you need a larger supply we have the solutions you
are looking for.   

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2017年03月16日

Strong hollow bar


Self drilling hollow bars come with couplings, different types of bits, centralizers, nuts and anchor plates, and also several accessories for injection.Our range of Self drilling hollow bar has the following threads : R25, R32, R38, R51, T30,T40,T52 and T103, with several inside diameters.R thread anchor bar or called rock bolt, soil nail, which is a kind of threaded hollow bar , bar surface with an rope thread according to ISO 10208 & 1720. It was firstly invented by MAI on 1960S to solve the low construction speed on complicated underground works, nowadays; it is very popular all around the world.T thread anchor bar surface with a trapezoidal thread, this design of connection is much stronger and reliable when compared with rope thread, we supply full sizes from T30 to T103.
For so long time,Sinorock is an adherent of professional product and excellent service on Self drilling anchor bar system field.Our quality products, prompt delivery, and competitive pricing give our customers the advantage,also the foundation stone for opening the market.The company dedicate its innovation of service and product to gain us much praise from the customers.So the Sinorock is the best choice for most of the construction.
Sinorock is a developed Self drilling anchor bar manufacturer,with its nearly few years industry experience and keen insight into the market,it has become a large-scale enterprise concentrate on Self drilling anchor operation, processing,engineering design and construction,and international trading. From its inception,Sinorock has been committed to providing clients worldwide with a one-stop solution for ground anchor. We have advanced production technology and innovation to improve the safety and productivity performance of our customers in the mining, tunneling and civil construction industries.
  

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2017年03月07日

Hollow Bar Micropiles

Hollow Bar Micropiles are drilled into the ground using a sacrificial drill/grout tip while
pressurized grout is pumped down the hollow bar while drilling. Micropiles can be used for
practically any soil condition and load is gained through bond stress between the grout and the
surrounding soils.

Micropiles have the advantage of being the one piling system that has the best chance of penetrating
obstructions during installation. A wide variety of drilling tips are available for different soil
conditions.
Self-drilling hollow bar methods are also used, involving a hollow anchor bar, a sacrificial bit with
ports, and an external full depth or partial depth casing as needed to control overburden soils. In this case grout is pressurized down through the hollow bar, out the grout ports and a pressure head
is maintained such that the annulus in the soil around the bar is pressurized with grout. When full
or partial depth casing is used, the frictional capacity must be adjusted. The casing in the upper
sections of a micropile can also serve to increase lateral resistance and bending resistance for the
micropile and can assist with more versatile connections to structural components at or above grade.

Sinorock strives to meet your specific hollow anchor bolt needs so you can compete in the anchoring
industry. We offer a wide range of services that add value to your company. The company has
modernised its plant with capability to produce its range of anchor bolts in any quantity to meet the
demand in the Domestic and in the International Market.
Sinorock is known as one of the trusted and reliable wholesalers and suppliers of a wide range of
rock anchoring tools and Machines. These are procured from Sinorock, who design and develop these as
per the defined quality standards. Our valued customers can buy these from us at market leading
prices.Sinorock has provided rock anchoring solutions and project management services for some of the
most significant Civil Infrastructure projects in the world.  

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