Slit and wedge bolt Slit and wedge bolt is composed by rod , wedge, plate, nut and so on , have good bearing capacity for roof support How to work Slit wedge rock bolt has five parts : wedge, rod, plate, spherical washer and nut .One end of high strength of rod has a cross slit , swedge can be inserted in , the other end has thread for hold plate , washer , and nut . After drilling the borehole , insert swedge into slit and install other accessories , push the whole rock bolt into the end of borehole, drive external end hard so that wedge can expand cross slit , causing large pressure between interior end and strata . The bolt can be used with cement paste or cement plaster for permanent support . Feature (1) Large bearing capacity for roof support (2) Simple structure and easy installation (3) When used for permanent support , should be with cement paste or cement plaster (4) Spherical washer provides up to 180 angle of tilt, ;user friendly rounded corners Exporting standard package.
(1) roll-formed from high strength steel band with one end tapered tip for easy insertion into a drill hole, the other end has a welded ring for holding the bearing plate. (2) provideimmediate ground support in radial and axial direction. Be good for immediate ground support, but not suitable for very soft strata and permanent support. (3) fast and easy installation with hand held or mechanized bolting equipment. (4) no cement grout and resin cartridge needed. (5) available with both black and galvanized. It is based on the request of each client.
Tightlok cable bolt is made of steel strand, and has perfect support capacity. Usually be used in the area where common grouted support is vacant or inadequate, and especially good for permanent ground support with some resin cartridge . Features: 1. Has incomparable flexible capacity and anti-shearing capacity. 2. Available in two different diameters with both black and galvanized. 3. Usually packed into roll to save working space, especially in confined areas. 4. Can use the conventional bolting equipment. 5. Specially designed birdcage system can greatly improve the resin mixing and anchorage result. 6. Plain or bulbed options available, bulbs available at either 0.5m or 1m spacing. 7. Fish hooks fitted to cables for retention in holes prior to grouting. 8. Usually matched with Washer, Grip(Barrel & Wedge) and Dome Plate. It is based on the request of each client.
Tightlok grooved bolt is made of hot rolled bar with several forged grooves at one End, usually used for hardrock support. Features: (1) Groove device makes resin mixing easily and completely. (2) Fast and easy installation by mechanized tools. (3) Used together with resin cartridge for permanent support. (4) With pin nut device, nut can help drive the rod to mix the resin. It is based on the request of each client.
Tightlok threadbar bolt is composed of hot rolled ribbed bar, high strength plate , damping nut , yield tube, washer , and other accessories. Usually used in thick coal seams with very high stress and large Deformation. Features: (1) High tensile strength and good support capacity which can prevent the roof from sinking and sliding. (2) Fast and easy installation by mechanized tools. (3) Used together with resin cartridge for permanent support. (4) Sharp end device makes installation easier and faster. (5) Left hand thread direction available. (6) Specially "sandwich"device can buffer and release the pressure.
Full thread bar bolt is used together with dome plate and net for reliable ground support in mines, tunnels, slopes, or wherever. Feature: (1). The bar has closely defined mechanical properties which provide consistent performance under long term anchor loading. (2). In the longitudinal direcition , rock body has equal tensile strength , that is about 40% higher than the reverse-twist bolt in the same specification. (3). Extend the support area , not only be used by end anchoring , but also be used by fully anchoring , that has a better Support efficiency. (4). Low price, widely used in coal mines, railways, hydropower and other types of roadway projects. (5). Thread profile offers excellent mixing capabilities in resins installation. (6). The high ductility and smooth, relatively flat rate of strain hardening ensures a high margin of safety against tensile/shear overload in the case of transverse movements in the rock soil. (7). Can be cut and spliced at any point along its length. It is based on the request of each client.
MS Head: Pan, Round, Truss 1.4mm~6mm 2#~10# 1/8"~1/4" (custom made screw). 12"x8"x8".
We supply huckbolt (c6l , c50l), with different sizes from 3/16'' to 7/8''; Material : Carbon steel, stainless steel, alloy aluminium ; Surface treatment: zinc plated, plain, black. Standard lot size, weight , dimensions.
We supply hex bolt, carriage bolt, stud bolt, wheel bolt , with different sizes and materials :carbon steel, stainless steel, copper. Carton.
We supply blind rivet open /sealed type), mono bolt (cup-fix rivet), hem-fix rivet, uni-grip rivet, multi-grip rivet, with different sizes from 3.2mm to 6.4mm. Material: carbon steel, stainless steel, aluminium. Carton.
We supply blind rivet(open /sealed type), mono bolt (cup-fix rivet), hem-fix rivet, uni-grip rivet, multi-grip rivet, with different sizes from 3.2mm to 6.4mm. Material: carbon steel, stainless steel, aluminium. Carton.
ISO 9001:2001 Surface treatment: black, zinc plated , yellow zinc plated, hot dipped galvanized. Diameter: M5-M30 Lenghth: M6-300.
Dowel pins.
Hardness after hardending & tempering : hb240~280 Nitrided hardness : hv950~1000 Nitrided case depth : 0.55~0.7mm.
Size:accoring to your size Material: GR1GR2 GR5 GR7 GR9 GR23 MOQ:100pcs. Plywood case according to your goods.
Size:accordng to your requirments MOQ:100pcs. Package:plywood case.
Name:Track bolt Stabdard : SAE j-429 , grade from GR2, GR5, GR8 Size :Dia.From1/2"to1-1/16", length from 2-1/2"to28" Material : Carbon steel or stainless steel, q195, q235, 35#, 45#, 35crmo, 42crmo, 40cr etc. Protection : Plain (oiled), hot dip galvanized, white zink plated, yellow zink plated, black, dacromet, geomet or others specified by the customers. Productivity : 1200tons/month; Unit price :Negotiable Minimum order : 1000 pieces Shipment terms : FOB, CIF, CFR, DDU, ECT. Packed sacks, 50lbscartons, 50lbs plastic kegs, 200lbs kegs.Gunnysack, 25kgs bags, 50lbs buckets, or customers required.
Drywall screws C1022 quality, black phosphated, hardened, twin fast, philips head. 1000 pc packing into carton - 20 boxes into one carton.
Sems Screw with washer assembly. Washer type: spring lock washer, external tooth lock washer, internal tooth lock washer, flat washer, square washer, cup washer, DIN 6904, DIN6905, wave washer, square dome washer, conical washer, special washer. Material: Carbon Steel, Alloy Steel, Stainless Steel, Brass. Standard: IFI, JIS, ISO, DIN, BS. Size Range: M1.4-M12, #0-1/2 Length Range: 3MM-125MM, 3/16-5". New styles and customer designs are welcome.
Screw with washer assembly. Head Type: Pan Head, Ind Hex Head, Hex Head, Ind Hex Washer Head, Truss Head, Fillister Head, Binding Head...etc. Material: Carbon Steel, Alloy Steel, Stainless Steel, Brass. Standard: IFI, JIS, ISO, DIN, BS. Size Range: M1.4-M12, #0-1/2 Length Range: 3MM-125MM, 3/16-5". New Styles and customer designs are welcome.
