化學成分及機械性質| FOUNDER LAND
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GradeMaterialNoChemicalcomposition％Tensilekgf/mm²Elongation％RemainingTestFlatteningTest CSiMnPSCrMoB CarbonSteelTubesSTKM11A0.12max0.35max0.60max0.04max0.04max_________＞30＞35D≧1.3DD≧1/2D STKM12A0.20max0.35max0.60max＞35＞35D≧1.2DD≧2/3D STKM12B＞40＞25D≧1.2DD≧2/3D S
