china coal 0001
U-channel Tunnel Steel Support
Keywords: U-channel Steel Support, Tunnel Steel Support, Steel Support For Sale
Introduction of U-channel Steel Support For Coal Mine
U channel steel support cross section is shaped like the letter "U" in English. National production of u-shape cross-section shape, geometric parameters and material is different, at present China''''s production of u-shape model mainly include stepping, U25, U29, U36 these four. The stepping and U25 waist position; U29, U36 belongs to the ear. Stepping up the carrying capacity is very low, now rarely production.
U channel steel support with high initial supporting force, supporting intensity big, easy to install and is not easy to deformation, so often used in the manufacture of roadway yielding metal stents, mine, mine roadway secondary supporting of roadway, and mountain tunnel support support purposes
Use, effectively reduce the roof caving u-shape set, help such as accidents, safe and reliable, and enhances the stability of the mine ventilation system. Choose u-shape flexible support, better solved the difficult problem of the excavation support
Structure of U-channel Steel Support For Coal Mine
1.Top Beam
Top beam is circular arch, its amount depending on the cross section of roadway with different sizes, support force, transportation conditions, section 1 and section number.
2.Column leg
There are three kinds of back leg , one kind is upside for circular arc form, for straight line at the bottom; The second is all for the curved shape, and only one radius of curvature; The third is all for the curved shape, but there are two curvature radius. Back leg in welding under the base, the base of large plate on the hard and soft;
3.Connection parts
Fitting is a support section and internode card device, can the internode connection effect, can also be connected the two compression steel joint parts, provide pre-tightening force, make the u-shape between friction, thereby ensuring that the arch has a certain resistance and certain drop-off.
4.Rod between support
Rod between support is to enhance the relative stability, the support bracket from longitudinal connection, form a whole.
5.Back-up material
Back-up material is u-shaped steel support between supports and surrounding rock filling material, improve the stress of the support, to improve the bearing capacity and maintain the stability of surrounding rock.
Characteristic of U-channel Steel Support For Coal Mine
1,Stand high pressure , support long time, easy to installation and not easy to be out of shape
2,compared with other rigid support , U-shaped steel support has a scalable and reliable carrying capacity to adapt to load and deformation of soft rock.
3,U-shaped steel support bracket support cross back high utilization convenient small amount of maintenance.
4,U3 steel support recycling reuse rate, reduce prop use, very obvious envir
Material: high carbon spring steel, spring steel, stainless steel, alloy steel Compression Spring, Extension Spring : Wire Diameter: 0.2-40.0mm Torsion spring wire diameter :0.2-35mm Surface Finish: black , Zinc, Nickel, silver, golden, tin, powder coating, shot pin Applications: Automotive, medical device, agricultural machinery ,electronics, toy, electric power distribution. Extension spring hook include Germany hook, British hook, Side hook We can customize special design of springs based on your requirement.
Supplier: Chemical, chemical raw material, steel pipe, steel tube, stainless steel, pipe fitting, flange, fasteners, steel wire
Services: Transportation agent,customs clearance service,
Buyer: Import raw materials, bulk commodities
We are glad to propose 500 MT of stain less steel mill scale. Mill scale is formed on the outer surfaces during by the hot rolling lamination of stainless-steel products. At a visual inspection the material is a hard brittle sand and is mainly composed of iron oxides, mostly ferric, and is bluish black in colour, but it also contains considerable alloying elements such as chromium and nickel. The recovery ratio after melting in furnace for the most valuable alloy elements is: - Ni: 3.5 - 4.5% - Cr: 6-8% From the chemical and physical analysis performed on the scrap, and according to the European environmental rules, the material has been classified as a special non dangerous waste, listed in green list. In particular the mill scale can be classified as follows: Waste code: 10 02 10 The material is stored on cemented flooring, and it can be loaded loose in tipper trucks or containers. Chemical analysis of the material is available on request.
Supplier: Metals and minerals, steel products and agricultural products
1 steel tubes/pipes (ssaw, lsaw, erw and seamless steel pipes)
2] galvanized steel coils
3] galvanized steel sheets
4] pre painted galvanized steel sheets/coils
5] corrugated steel sheets
6] deformed steel bars / re inforcing steel bars
7] wire rods
8] wire nails
9] stainless steel coils
10] steel fence bar
11] steel strips
12] flat / round / square bars
13] pipes / fittings / flange
14} steel billets
15 agro products rices, pulses, sesame seeds, peanuts
Services: Traders
Buyer: Graphite, aluminium, quartz, steel, copper, zinc, pulses, rice, nuts and seeds
Supplier: Engineering components for automotive, electrical, construction, transmission tower projects , rail road components hardware like different types of washers, circlips & retaining rings, clips , clamps ,hose clamp , spring band clamps ,metal pressed parts, wire form parts.
Services: Manufacturing & sourcing agents
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Buyer: Building materials
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Services: Commodity trading company
Buyer: Metals and minerals and agri commodities
Supplier: Chemicals, minerals, agro products, steel, aluminium, copper, scaffolding products, minerals, scrap, washing machine parts, refrigerator parts, micro oven parts & auto parts.
Buyer: Chemicals, minerals, agro products, steel, aluminium, copper, scaffolding products, minerals, scrap, washing machine parts, refrigerator parts, micro oven parts & auto parts.
