Carbon Steel Auto Hook 1.CertificationTUVPED-ADISO9001:2000 2.Size:DN15-DN5000 3.Process:free forgingDie F 4.OEM Carbon Steel Auto Hook 1.Auto Hook ... Material a)carbon steel SA234 WPB, SA234 WPC,SA42 WPL6, SA42 ... , 1.4571,JIS SUS304,SUS304, SUS304L, SUS316, SUS316 c) Alloy Steel: ASTM/ASME SA234 WP12, WP11,WP22, WP5, WP9, WP91.ASTM ...