... Flange 2.Type:Forged Flange 4.Certificate:ISO9001:2008 1. ANSI Stainless Steel F304L Forged Flange 2. Material:Stainless Steel:such ... ,316L,321 and so on. 3. Standard: JIS,BS,DIN.ANSI/ASTM ,NF,API ,GOST,GB and Non standard, 4. Size ... flanges, Welding neck flanges, Socket welding flanges and Treaded flanges.,Square flanges. 6. Pressure ratings :class:150 300 400 600 900 ...