... /2"-40" 4.Pressure:PN6-PN160 1. AISI 304 Stainless Steel Flange Manufacture 2. Material:Stainless Steel:such as 201 301 304 ... .3. Standard:GB,JIS,BS,DIN.UNI,ANSI/ASTM ASME,,API, NF ,GOST and Non Standard4. Size:1/2"-40"5 ... , FM ,R.T.J ,R.J etc.8. Production process : raw material--cutting--heating--forging--heat treatment--maching-- inspection-washing-packaging-Ex ...