42crmo4 4140 4130 alloy steel round bars, 42crmo4 4140 42crmo4 4140 4130 4340 alloy carbon steel
1. Grade 4140/4130/ 4145/ 4340/42CRMO/42CRMO4 2. Size DIA 80-800mm 3. Standard AISI, ASTM, BS, DIN, GB, JIS 4. Certification ISO9001, SGS, BV,ABS Product Name Forged alloy steel round bars Material Alloy steel Surface Black or Rough turned Standard AISI, ASTM, BS, DIN, GB, JIS Grade 4140/4130/ 4145/ 4340/42CRMO/42CRMO4 Heat treatment Annealed,normalized,quenching and
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42crmo4 4140 4130 4340 alloy carbon steel