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ASTM 4130/SCM430/ SCM2/DIN 1.7220 Hot Rolled Steel Bar ,Heat Treatment Steel Bar 1. Standards: AISI 4130,ASTM 4130 ,JIS: SCM430,JIS: SCM2,DIN: 1.7220, 30CrMo 2. Specification: Dia: 10~200mm Length...