DIN 529, JIS B1178, KSB 1016, ASTM F1554 – Gr 36, 55, ASTM A307, 或者来图加工
M6~M160
黑色,镀锌,热浸镀锌,油漆,乙烯基...
碳素钢,合金钢,不锈钢...
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