Carbon Steel Pipes For General Structures
CNS 4435 G3102 Carbon Steel Pipes For General Structures JIS G3444 適用於土木、建築、鐵塔、鷹架、樁、支柱、地錨及其他結構物之鋼管，種類為 STK 30 ,41 , 51 , 50 ,55 Outer Diameter Thickness Reference Weight Cross-sectional area 慣性矩 截面模數 迴轉半徑 繼續閱讀 →