Welding neck flange

Type of Flange:

Welding neck flange, Slip-on welding flange, Threaded flange, Socket welding flange, High-pressure flangem, Lap joint flange

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