1.Specialized manufacturer 2.Ensure you quality,timely delivery 3.Had been approved by ASTM 1. Name:304 stainless steel flange2. Type: PL,SO,WN,SW3.Wall ... requirement.4. Size: 1/2''-48''5. Technics:Forged,Casting6. Standard: ASTM,ASME,GB,DIN,EN,JIS, etc7. Grade: 304,304L,316,316L,317 ...