V2.0

V2.0

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日期:2025-10-07
(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