... forged alloy steel AISI 4130,AISI4140,AISI 4340 ISO9001:2008, (1) Rough Turned (2) Normalized/Q ... alloy steel AISI 4130,AISI4140,AISI 4340 ISO9001:2008 Product Specifications/Features:Size: 20-1000mmLength: according ... AISI, ASTM, BSSupply ability: 6000MT/monthCertificate: ISO9001:2008 Quality Managements System CertificateProducts list:CategoryproductsSpecificationsStainless steel1Cr13-4Cr13 321 304 ...