Prior art keywords structural weld impact construction machine SM400, 30 SM490, SM570, and other structural steels are preferable. FIG. 5 and FIG. 6 are views schematically showing typical examples of the weld zones of a boom and arm to which the present invention is applied by cross-sectional views. High-strength light-weight boom EP1775391A1 - Boom/arm member for construction machine EP1775391A1 EP05766177A EP05766177A EP1775391A1 EP 1775391 A1 EP1775391 A1 EP 1775391A1 EP 05766177 A EP05766177 A EP 05766177A EP 05766177 A EP05766177 A EP 05766177A EP 1775391 A1 EP1775391 A1 EP 1775391A1 Authority EP European Patent Office Prior art keywords boom arm construction machine fatigue strength toes Prior art date 2004-07-15 Legal
Improving the weldability of steel for bridge structures is impor-tant from the standpoint of enhancing the efficiency of bridge fabri-cation. In particular, conventional high strength steel of SM570 Class or higher requires preheating as a measure to restrain cold cracking. The need for preheating is one of the detrimental factors regarding a283 grade c coil for sculpture data sheet - Hot Rolled a283 grade c sheet for sculpture with shear edges - BDN STEEL. a283 grade c sheet for sculpture with shear edges Rolled 2 300mm BBN is the China Iron and steel supplier/factory,offer JIS G 3114 SMA400AW corten steel plate thickness stock,BBN keep A36,A283,S355J2,SS400,Q345B,16Mo3 steel stock in China,best price and high quality of SG295,AH36 astm a871 type 2 weather steel data sheetresults for this questionFeedbackchina factory a871 type 4 anti weathering corrosion coil. what is astm a871 type 2 weather steel mechanical properties.Weathering SteelASTM A871 material is a kind of low alloy high strength structural weathering resistance steel,or corten steel,or atmosphere corrosion resistance steel.There is two grades they are A871 Gr 60 and A871 Gr 65.ASTM A871 has for
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