JIS G3302-SGCC-SGC570,SGCH(FULL HARD-G550),SGHC-SGH540
EN10346-DX51D+Z,DX53D+Z,S250GD-S550GD,ASTM A653M-CS-B,
SS255-SS550
JIS G3141-SPCC-SD,SPCD-SD,SPEC-SD,EN10130-DC01,
DC03,DC04,SAE1006,SAE1008,ASTM A424-TYPE II
HEBEI JINGYE,NANJIN STEEL,LIANYUAN STEEL,
RIZHAO STEEL
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