Standards: ANSI DIN EN JIS BS. Types:SO, WN, BL, PL, THRD flanges Keeping ... Welding flange , Plate flange and THRD etc.Standards:ANSI,DIN,EN,JIS, and BS etc.Size & Pressure: 15mm-2500mm. 150lb-2500lb ... cooperation in the near future.Certificate: TUV ISO9001 and PED EN flanges