Structure: 1) Ball nut: it can transfer the stress of surrounding rock to the pad. 2) Arch plate: can bear greater stress of surrounding rock. 3) Check plup plug: make the grouting maintain a certain pressure to fill the surrounding rock gap adequately. 4) Anchor bolt bar: the whole length of the intermational standard waveform connection thread, easy to install drill bit, coupling sleeve, fastening nut; and can be arbitrarily cut and connected to lengthen. 5) Bushing: so that the bolt can be lengthened to the design depth while drilling. 6) Broach: it has strong penetrating power, enabling the bolt to pass through all kinds of rocks. Characteristic: Self drilling bolt adopts good thick wall seamless steel pipe material, perfect and fast surface screw forming technology and well-made fittings, the function of drilling, grouting and anchoring has been realized. 1) There have a strong penetrating drill in front of the bolt, under the action of general drilling machinery, it can easily penetrate all kinds of rocks. 2) The bolt has a continuous international standard corrugated thread, which can be used as a drill pipe to complete the drilling of anchor hole. 3) The bolt body as the drill pipe does not need to be pulled out, and the cavity can be used as the grouting channel from inside to outside. 4) Hign efficiency grouting stopc ock enables grouting to maintain strong grouting pressire, fully fill the vold and fix the fractured rock mass, high stength washer and nuts can transfer the stress of deep surrounding rock evenly to surrounding rock, the purpose of mutual support between rock and anchor is achieved. If you are intrested in our products please visit our website
Self-drilling anchor (SDA) combines drilling, insertion and grouting into one easy operation. It reduces project lead time and installation difficulty.Low carbon content in steel increases its ductility, reduces its brittleness, and resists corrosion cracking and carbon embrittlement. This choice of material significantly reduces occurrences where rockbolt may snap or buckle during onsite installation.
Cross counter sunk self drilling bolt / screws Finish: zinc coated Head style: cross recessed countersunk Length: 13 mm, 16mm, 19 mm, 25 mm, 32 mm, 38 mm, 50 mm, etc.. Materail: stainless steel, steel
R51l/1R51lR51n/1R51n Self drilling anchoring system is an advanced system which can ensure the anchoring effect for complex ground conditions. It can be integrated with the functions of drilling, grouting and anchoring.
Anchor bolt r25n Outside diameter(mm) 25 Internal diameter (mm ) 14 Ultimate load (kn) 200 Yield load (kn) 150 Weight (kg/m) 2.3 Thread type iso10208 Type of steel en10083-1 Left or right length(m) 1-6m, we can supply any length according to construction require 1-6m Options of anti-corrosion hot-dipped galvanization Usually anchor bar in bundles accessories in carton/pallet also depend on the customer's requirement
1.Self-drilling anchor bolt has two performance: drilling and grouting. It features a hollow bore for flushing, or simultaneous drilling and grouting. 2.The self-drilling anchor bolt is reliable, efficient and convenient, which makes high piling output possible. 3.Sinorock corrosion protection system: A:hot-dip galvanizing corrosion protection. We can do it according to en iso1461. B:duplex coat system: duplex coat=hot-dip galvanizing+epoxy powder coating.
R25, R32, R38, R51, T76. Depending on the products.
Sealing Self Drilling Hexagon Bolts
Self Drilling Anchor Bolt Systems Manufacturers Exporters in India
1) Ball nut: it can transfer the stress of surrounding rock to the pad. 2) Arch plate: can bear greater stress of surrounding rock. 3) Check plup plug: make the grouting maintain a certain pressure to fill the surrounding rock gap adequately. 4) Anchor bolt bar: the whole length of the intermational standard waveform connection thread, easy to install drill bit, coupling sleeve, fastening nut; and can be arbitrarily cut and connected to lengthen. 5) Bushing: so that the bolt can be lengthened to the design depth while drilling. 6) Broach: it has strong penetrating power, enabling the bolt to pass through all kinds of rocks.
Self Drilling Flanged Hexagon Bolts Size 1 , 2, 3
Stainless steel self drilling anchor bolt is made of stainless steel materials. It is an alloy steel self drilling anchor bolt which can resist corrosion in air or chemical corrosion conditions. Functions: Owning to its good welding performance & inoxidizability, stainless steel rock bolt are mainly used in the permanent support of large initial stress of surrounding rock, or other projects which have special requirement for corrosion resistance, such as sub-sea tunnel, seaport, seawall and some projects in the industrial pollution area. Conditions: It applied to marine environment and chloride corrosion. It is also used to chemical industry and infrastructures of important equipment which requires high anti-corrosion quality. It widely used in bay, pier, pile foundation, breakwater and mooring system. Features and advantages: 1. Good anti-corrosion quality and antioxidant activity. 2. High temperature oxidation resistance, resisting fire at a certain extent. 3. Stainless steel has good strength and high wear resistance. 4. Its anti-corrosion and resistance to chloride is prior to other coating re-bars due to its repairing oxide layer. Cases: Stainless steel self-drilling anchor bolt system is mainly used for tunnel and underground engineering, slope engineering, ground and foundation engineering. It can be used for pre-construction support and can effectively enhance the stability of soil and rock mass.
Anti-corrosion Mechanism Immerse the derusted anchor bar and accessories in liquid zinc for a certain time, so that the atoms can penetrate and diffuse each other, thereby forming an iron-zinc alloy layer, which is dense, uniform, firmly bonded, bright and corrosion resistant. Zinc is an amphoteric metal. In thermodynamics, zinc has a stable area. Hot-dip galvanizing is an electrochemical anti-corrosion method, which hinder further corrosion through insoluble chemical substances produced by interaction between zinc and concrete solution. Product Standard Sinorock has formulated the standard for galvanized products coatings in accordance with ISO 1461 " Hot dip galvanized coatings on fabricated iron and steel articles Specifications and test methods". The coating thickness of main products is as follows: Featurs and Advantages Excellent anti-corrosion properties: As zinc is an active metal, after coating surface is damaged, it will protect the steel by battery effect. Long service life: Zinc layer is consumed very slowly in the atmosphere, so its service life far exceeds that of any other coatings. Full protection: As immersed into hot-dip galvanizing bath, products are fully protected and anti-corrosion effect is better. Lower price: In most cases, the hot-dip galvanizing cost is lower. Zinc coating is more durable than others, and does not require maintenance in the future. High processing efficiency: Hot-dip galvanizing bath is simple and efficiency is higher than other coatings. Not affect steel performance: Hot-dip galvanizing is carried out in an environment of more than 400 �¢??, and will not affect the performance and toughness of steel. Service Life Generally, the service life of hot-dip galvanized products is more than 50 years in most environments, and it will be different according to corrosion level of the environment. According to ISO 12944-2 "Paints and varnishes- Corrosion protection of steel structures by protective paint systems-Part 2: Environmental classification" (equivalent to GB/T 30790.2), The table below lists the reference rates for different atmospheric-corrosivity environment categories.
R thread self drilling hollow bar anchor is composed by hollow anchor bolt, anchor nut, anchor plate, anchor coupler, drill bit, centralizer, and the hollow anchor bars can be cut and lengthened by coupling on request. Functions: R thread self drilling hollow bar anchor is an advanced system which can ensure the anchoring effect for complex ground conditions. It can be integrated with the functions of drilling, grouting and anchoring. Conditions: Tunneling Mining Slope Stabilization Foundation Support Features and advantages: 1. Safe, reliable, and time saving. 2. Simple installation & operation. 3. Choice of drill bits for different ground conditions. 4. Grouting works synchronize with drilling or after drilling. Grout can fill fractures effectively. 5. Anchor bars can be cut and lengthened on request, applying to narrow spaces. 6. It provides higher bonding stress than smooth steel pipe depending on continuous wave thread.
(1)diameter: r25, r32, r38, r51, t76, t111 (2)max. Tensile load: 200-1900kn. (3)yield load: 150-1600kn. (4)standard length: 1-6m, we can supply any length according to construction require. (5)productivity: 3000000m/month We can supply all the accessories including anchor bits, coupling, nuts, plates, and centralizer. (1)diameter: r25, r32, r38, r51, t76, t111
Competitive price new product self-drilling rock anchor bolt system anchor bolt price Product descripion of self-drilling hollow core bar anchors: (1)Type: R25N, R32N, R32S, R38N, R51L, R51N, T30/11, T40/16, T76N, T76S. (2)Max. Tensile Load: 200-1900KN. (3)Yield Load: 150-1500KN. (4)Standard length: we can supply any length according to construction require. (5)Application: Drilling ,Placement of steel reinforcing elements ,Grout placement
The SupAnchor Self-Drilling Anchor is a unique anchoring system and is todayÂë answer to the increasing demands of the tunnelling industry and ground engineering for safer and faster production. The system provides advantages for all areas of its applications, where boreholes would require the time consuming drilling with casing systems in unconsolidated or cohesive soil. Features and Advantages Fits SupAnchor standard Boomer, ROC and Mustang rigs. Particulary suitable for difficult ground conditions. A high rate of installation since drilling, placing and grouting can be performed in one single operation. Self drilling system eliminates the requirement for a cased borehole. Installation with simultaneous drilling and grouting possible. Easy installation in all directions, also upwards. Suitable for working in limited space, height and in areas of difficult access. Simple post grouting system. Hot-dipped galvanizing for corrosion protection Applications Tunnelling Ground engineering Radial bolting Slope stabilization Forepoling Micro injection pile Face stabilization Temporary support anchor Portal preparation Soil nailing SupAnchor Rock Reinforcement Specifications TECHNICAL DATA R 32N R 32S Outside diameter.............................................. 32 mm Internal diameter, average................................ 18.5 mm External diameter, effective............................. 29.1 mm Effective cross sectional area, average............ 396 mm Ultimate load capacity...................................... 280 kN Yield load capacity............................................ 230 kN Average tensile strength, Rm........................... 720 N/mm Average yield strength, Rp0,2.......................... 560 N/mm GENERAL DATA Type of steel............................................. EN 10083-1 Thread type............................................... R32. ISO 10208
Features 1. Safe, reliable, and time saving. 2. Simple installation & operation. 3. Choice of drill bits for different ground conditions. 4. Grouting works synchronize with drilling or after drilling. Grout can fill fractures effectively. 5. Anchor bars can be cut and lengthened on request, applying to narrow spaces. 6. It provides higher bonding stress than smooth steel pipe depending on continuous wave thread. Application Tunneling Mining Slope stabilization Foundation support Carton
Product description Underground construction double corrosion protection anchor bar based on the advanced molding technology, has the characteristics of high-strength, lightweight. Under the prerequisite of ensuring the bolt ultimate tensile strength, reasonable grouting aperture increases, solve the blocking problem. Makes grouting more smoother, fuller and more dense. While reducing the engineering cost and builders working strength, have achieved good results in every aspects. Product nameUnderground construction double corrosion protection anchor bar Length(m)2.0-4.0 Weight(kg/m)12.0-24.0 Outer(mm)38 Innner(mm)19 Ultimate load(kn)500 Yield load400 UsedMine, tunnel, slope, foundation pit Application Tunnelling ground engineering • radial bolting • slope stabilization • forepoling • micro injection pile • face stabilization • temporary support anchor • portal preparation • soil nailing Our company Chengdu luhui anchor material co. Ltd is establish in 2007, specialized in anchor engineering materials research and development production sales. We have developed many years hollow grouting, automatic anchor pole and prestressed anchor rod, all products are strictly in iso9001:2008 of the company quality management system, innovation, quality and credit first is our eternal goal.Our products have been widely used in the domestic railway, highway, hydropower station and the foundation pit of high-rise buildings for many years, and has been unanimously recognized the owner, the engineering company, the construction company, the supervisor. Packing & delivery Packing details: bundle and accessories packed in case Delivery details: 15-30 days -
Product description Luhui r32 self drilling hollow anchor bolts is mainly used in underground engineering , like weak surrounding rock, fault fracture zone, highland stress large deformation and other complex geology. Especially in serious hole collapse and deep fault rock situation, ordinary anchor rod is incapable of action. Lhz anchor bolt set drilling, grouting, lengthen and anchoring multifunction all in one, in all kinds of bad surrounding rock engineering applications achieved ideal support effect. SizeLength (m)Weight(kg/m)Outer (mm)Inner (mm)Cross section(mm²)Ultimate load(kn)Yield load (kn) R32l2.0-4.05.4-10.83221.5304210160 R32n2.0-4.06.8-13.63218.5396280230 R32s2.0-4.08.2-16.43215.0488360280 Tunnelling ground engineering • radial bolting • slope stabilization • forepoling • micro injection pile • face stabilization • temporary support anchor • portal preparation • soil nailing Technology process 1. Connect the alloy drill and anchor rod one end, on the other end, connect the drill sleeve and shank adapter , then connect the drilling rig or hand-held drill. Then start drilling, fill the cooling water while drilling.( if you want to lengthen the anchor rod, can connect the coupling, and then drilling) 2. Take down the drill, put the stop-grouting plug into the rod, and insert it to the hole, then ready to grout. Special circumstances like surrounding rock grouting tension is over or surrounding rock is too broken, can use anchor agent to seal the hole. 3. Connect quick grouting coupling and anchor rod end, connect other end of grouting machine. 4. Start grouting, when grouting full and reach design value then power off . Grouting pressure according to the design parameters and grouting machine performance determine , cement/sand reference values is 1:0 ~ 1:1, water/cement reference value is 0.45:1 ~ 0.5:1. 5. Install anchor plate and nuts, and tighten nuts.
