... AISI 4130,AISI4140,AISI 4340 ISO9001:2008, (1) Rough Turned (2) Normalized/Q+T/Annealed forged alloy ... steel AISI 4130,AISI4140,AISI 4340 ISO9001:2008 Product Specifications/ ... JIS, AISI, ASTM, BSSupply ability: 6000MT/monthCertificate: ISO9001:2008 Quality Managements System CertificateProducts list: CategoryproductsSpecificationsStainless steel1Cr13-4Cr13 ...