Type of Flange:
WELDINGNECK FLANGE, SLIP-ON FLANGE,PLATE FLANGE,BLIND FLANGE 
SOCKET WELDING FLANGE, THREADED FLANGE, LAP JOINT FLANGE, ORIFICE FLANG
Standard of Flange:
American Standard Series:
ANSI B 16.5 ANSI B 16.47 API 605 MSS SP44 ANSI B 16.36(ORIFICE FLANG)


German Standard Series:


6bar             2573、2527、2631
10bar            2576、2527、2632
16bar            2543、2527、2633
25bar               2544、2527、2634
40bar               2545、2527、2635


Japanese Standard Series:
KS B1503 JIS B2220     JIS B2238
British Standard Series:
BS 1560   BS 4504  BS-1
Material specifications:
Carbon steel:  ASTM A 105,
Low alloy steel: ASTM A 182 Grade F1, F5, F6, F9, F11, F12, F21, F22, F91, F92;
Stainless steel: ASTM A182 304,304H,304L,310,316,316H,316L, F317,F317L, F321,F347;
Dimensions and Rate:
DN15-DN1500  
Standard ratings: 150, 300, 400, 600, 900, 1500 and 2500
Type of sealing surface: FF   RF   RJ   M   F   MF   T   G   TG