鍍鋅鋼管規格astm的相關文章
V2.0

V2.0

瀏覽:1258
日期:2025-12-03
(3) ASTM A53 無縫鋼鐵五金之熱浸鍍鋅黑色鋼管規範. (4) ASTM A307 Standard Specification for Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength....看更多