... :Forged Flange 4.Certificate:ISO9001:2008 1. ANSI Stainless Steel F304L Forged Flange 2. Material:Stainless Steel:such as 201, 301 ,304,304L,316 ... ,FEMALE and so on . 8. Used for : petroleum,chemical,power,gas,water,linepipe, heat exchanger,shipbuilding,construction,etc. 9. Tolerance:not less ... . Our objective:Survival by quality and development by credibility. ANSI Stainless Steel F304L Forged Flange