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  • Steel Plates standard and grades from LT

    Steel Plates standard and grades from LT

    We are dealing below steel grades and standards: 1.Abrasion/Ballistic Steel;HARDOX400, HARDOX450, HARDOX500, XAR400-500, raex400, raex450, raex500, DILLIDUR400V, DILLIDUR500V, QUARD400, QUARD500, FORA400, JFEEH360, JFEEH400, JFEEH500, FORA500, CREUSABRO4800, CREUSABRO8000 2.Wear resistant s...
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  • Equivalent standard and grade of abrasion/wear resistant steels

    Equivalent standard and grade of abrasion/wear resistant steels

    Steel Standard Steel Grades Sweden HARDOX400 HARDOX450 HARDOX500 HARDOX600 SB-50 SB-45 Germany XAR400 XAR450 XAR500 XAR600 Dillidur400V Dillidur500V China NM360 NM400 NM450 NM500     Finland RAEX400 RAEX450 RAEX500       Japan JFE-EH360 JFE-EH450 JFE-EH500 WEL-HARD400 WEL-HARD500...
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  • Pre-Thread Diameter

    Pre-Thread Diameter

    This chart apply for our threaded round bar products, and fastener products, for example anchor bolts, rock bolts, stud bolts, anchor cages. If any doubt or questions, our engineers are always pleased to help. [email protected] Pre-Thread Diameter             Unit:mm Norminal Diam...
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  • Machanical rock anchors

    Machanical rock anchors

    Most popular mechanical anchor system is expansion shell anchors. A hole is drilled in the rock and the rock bolt assembly is inserted. Then the tensile force(P) is applied. When the force is applied, the cone would try to move to the right side. The movement of the cone would expand the two wedg...
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  • Rock bolt For Mining/ Tunnel/ Slop Support

    Rock bolt For Mining/ Tunnel/ Slop Support

    Name Rock bolt For Mining/ Tunnel/ Slop Support Specifications  Specification & Standard GB/T 20065-2006  MT 146.2-2011 YB/T4363-2014 ISO6934-5:1991 Dn 16-32mm Rp0.2/MPa 500-800 Rm/MPa 500-1000 A% 15-22 Material High-performance steel AKv/J...
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  • DIN EN 10278 1999 Dimensions and tolerances of bright steel products Part 2

    DIN EN 10278 1999 Dimensions and tolerances of bright steel products Part 2

    5. Condition of delivery 5.1 Finished condition The steel product shall be delivered in one or combination of the following finished conditions with or without heat treatment: a) drawn, symbol +C; b) turned, symbol +SH; c) ground, symbol +SL; d) polished, symbol +PL. 5.2 End condition Unless othe...
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  • DIN EN 10278  1999 Dimensions and tolerances of bright steel products

    DIN EN 10278 1999 Dimensions and tolerances of bright steel products

    European standard EN 10278:1999 has the status of a DIN Standard, Previous editions DIN 174 DIN 175 DIN 176 DIN 178 DIN 668 DIN 671 DIN59360 DIN 59361 1. Scope  This European Standard applies to bright steel products in the drawn, turned or ground condition delivered in straight lengths. It doe...
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  • INCOMING INSPECTION STANDARD FOR NUTS

    INCOMING INSPECTION STANDARD FOR NUTS

     NUTS 1 Chemical composition test Within a specified time,incoming nuts materials of grade 35CrMo shall be retest, and results must be in accordiance with TABLE 1.   TABLE 1-1 Chemical composition of nuts(mass fraction)) /% Grade C Si Mn Cr Mo P S 35CrMo 0.32~0.40 0.17~0.37 0...
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  • Depth of Decarburization – Wind Turbine Foundation Anchor Bolt Inspection in Anyang Longteng Heat Treatment Material Co.,Ltd

    Depth of Decarburization – Wind Turbine Foundation Anchor Bolt Inspection in Anyang Longteng Heat Treatment Material Co.,Ltd

    (1)Decarburization of anchor bolts shall be performed by Metallographic  method according to GB/T3098.1 regulations.  (2)Decarburization of threaded parts shall be performed by metallographic method according to GB/T224-2008 “Determination of depth of decarburization of steels”.  ...
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  • LT-Acceptance inspection requirements of anchor bolts tensioning

    LT-Acceptance inspection requirements of anchor bolts tensioning

    1 Sampling ratio of acceptance inspection:inadequate tension inspection shall take 20% sampling of flange anchor bolts, if once test fails, sampling rate shall be expanded to 50% . If more than 5% of these 50% tests fail, all flange anchor bolts shall be re-tensioned and re-tightened. exceeding t...
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  • LT ——Inspection standard of key procedure for high- strength heat-treated anchor bolt

    LT ——Inspection standard of key procedure for high- strength heat-treated anchor bolt

    1、HEAT TREATMENT PROCEDURE INSPECTION热处 1.1 Heat-treatment procedure inspection refers to tests on steel round bars, in the duration of heat treatment production line, which, mechanical properties, hardness, impact absorb energy at low temperature tests are the mainly part. 3.2 Sampling: accor...
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  • Dimension and tolerances of NUTS and Washers – Wind tower foundation anchor bolt _ Anyang Longteng

    Dimension and tolerances of NUTS and Washers – Wind tower foundation anchor bolt _ Anyang Longteng

    Dimension and tolerance inspection shall be in accordance with GB/T6170-2000 “Hexagon regulat nuts(style 1)”. See Table 3 thickness m is symboled and described. Table 3 Thickness of nuts Specification of nuts M30 M36 M42 M48 M56 M64  P 3.5 4 4.5 5 5.5 6 Q/AYLT 06-201...
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  • INSPECTION STANDARD FOR APPEARANCE INSPECTION OF RAW MATERIALS—WIND TURBINE FOUNDATION ANCHOR BOLTS

    INSPECTION STANDARD FOR APPEARANCE INSPECTION OF RAW MATERIALS—WIND TURBINE FOUNDATION ANCHOR BOLTS

      The surface quality of steel round bar shall conform to GB/T3077-2015 “ALLOY STRUCTURE STEEL”-6.10.1 The surface of steel materials used for pressure processing    The surface of steel materials used for pressure processing shall be free of crack, scar, folding or sundry ...
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  • Inspection Standard for Raw Materials—Wind turbine foundation anchor bolts

    Inspection Standard for Raw Materials—Wind turbine foundation anchor bolts

    Raw materials for steel anchor bolt are grade 35CrMoA, 42CrMoA hot-rolled round bars. After stock in, within a specified time, re-test shall be performed according to following requirements. Arrange production schedule after qualification. 1.CHEMICAL COMPOSITION Retest results shall conform to ta...
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  • High strength anchor bolt assembly components-Nut,washer technical requirements _—— LT

    High strength anchor bolt assembly components-Nut,washer technical requirements _—— LT

    1.SCOPE  This standard specified the technical and test regulations for high duty anchor bolts components- nuts and washers, and technical requirements for marking, packaging, transportation, storage, production process and quality assurance control. This standard is applicable to the external pr...
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  • Raw Material Purchase Technical Requirements of High Strength Anchor Bolt Products

    Raw Material Purchase Technical Requirements of High Strength Anchor Bolt Products

    1 SCOPE This technical requirements specifies dimensions, shape, weight, tolerances, technical requirements, test methods, inspection regulations, packaging, marking and supplier quality assuance, of the hot-rolled round bars – LT anchor bolt products’ raw materials. This technical re...
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  • LT Heat Treated High Duty Rock Bolt Advantages

    LT Heat Treated High Duty Rock Bolt Advantages

    1. Ultra high strength, high impact energy rock bolt —— Impact absorbing energy advanced world levels Normal 600MPa grade rock bolt’s impact absorbing energy Akv is around 60J, but our LT products high strength rock bolt’s impact absorbing energy Akv ≥180J, which is very ...
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  • LT Ultra High Strength Heat Treated Rock Bolt

    LT Ultra High Strength Heat Treated Rock Bolt

    Anyang Longteng Heat Treatment Material Co.,Ltd( LT ) is an innovative enterprise combining production and selling super high strength steels(high duty, high performance, high impact energy) and seamless steel pipes products. With it’s dynamic factory, strategic and prospective mind, LT suc...
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  • Underground Mining Tunnel High Strength Rock Anchor Bolt

    Underground Mining Tunnel High Strength Rock Anchor Bolt

    Rebar Anchor Rod                                                                                                                                          Rebar Anchor Rod is widely used in coal mine, railway, water and electricity, etc.. The full strength of the whole length of the anchor bolt is...
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  • Left Hand Rebar Thread Rock Bolt Test Report

    Left Hand Rebar Thread Rock Bolt Test Report

    Rock anchor bolt is the most basic part of tunnel support in contemporary coal mine, it can help to strengthens the surrounding rocks of the tunnel together. Now the anchor is not only used in mine, but also used in engineering technology to reinforce the main body of slope, tunnel and dam. Apply...
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  • PACKAGING – WIND TOWER ANCHOR BOLT (DECRIPTION & VEDIO)

    PACKAGING – WIND TOWER ANCHOR BOLT (DECRIPTION & VEDIO)

    Packaging method is always one of the most important part of purchasing, especially for the wind turbine foundation cage anchor bolt. After finish main production part, we need to make full pole packaged, in order to enlarge the products life span and maintain their good property and performance....
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  • Marking – PRODUCE HIGH STRENGTH ANCHOR BOLT (DECRIPTION & VEDIO)

    Marking – PRODUCE HIGH STRENGTH ANCHOR BOLT (DECRIPTION & VEDIO)

    Wind Tower anchor bolt-foundation base system hold down bolts produce step-10th SEMI-FINISHED PRODUCTS MARKING RULES                                                                              After test, qualified raw materials will stock in our warehouses. All qualified raw materials should b...
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  • Saw cut+Rounding Chamfer-PRODUCE HIGH STRENGTH ANCHOR BOLT (DECRIPTION & VEDIO)

    Saw cut+Rounding Chamfer-PRODUCE HIGH STRENGTH ANCHOR BOLT (DECRIPTION & VEDIO)

    Sawing Cut                                                                                                                                                        Cut top and tail into the length as clients ordered, at the same time, we guarantee to control the length tolerance within 2 mm.   For...
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  • Production Security Trainning and Examination Activity

    Production Security Trainning and Examination Activity

    Nobody wants to see any security accident to happen, then how do we prevent them? The key is to improve workers’ sense of responsibility and security awareness. But security awareness should be improved step by step, in stead of complete within one day. What’s more, To obtain securit...
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