... 201, 301 ,304,304L,316,316L,321 and so on. 3. Standard: JIS,BS,DIN.ANSI/ASTM ,NF,API ... , 4. Size:1/2"-40" 5. Type:Slip on flanges,Plate flanges, Blind flanges, Spectacle flanges,Lap joint ... surface : FF ,RF, LJ, FM ,R.T.J ,R.J ,MALE ,FEMALE and so on . 8. Used for : petroleum,chemical,power ... of the P.R.C. 15. Marking :according to client's requirement. 16. QC staff :10-15 . 17. Inspection :in-house and ...