forged auto valve parts CertificationTUVPED-ADISO9001:2000 Size:DN15-DN5000 Process:free forgingDie F OEM forged auto valve parts1.Material a)carbon steel SA234 WPB, SA234 ... , WPHY 70 ,DIN 1629 St37, RST37.2 St52 b)Stainless Steel: ASTM/ASME SA403 304,304L ,316, 316L, WP304L, 3 ... , 1.4571,JIS SUS304,SUS304, SUS304L, SUS316, SUS316 c) Alloy Steel: ASTM/ASME SA234 WP12, WP11,WP22, WP5, WP9, WP91.ASTM ...