ASTM/AISI/UNS (AISI 4140, AISI 4130, AISI 8630, AISI 8620, ASTM A148 GRADE 96-60, ASTM A148 GRADE 115-95, ASTM A532, ASTM WCB,/WCC,SS316, SS304, ASTM 65-45-12);
GB standard (GB Q235, GBQ345, GB 45#, G...Powertrans Industrial (HK) Co Ltd
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