Threaded flangesare suitable for low pressure piping systems and generally used in galvanized steel pipe and the situation that not suitable for welding. Specifications available can be ASME B16.5 – Pipe Flanges and Flanged Fittings; ASME B16.36 – Orifice Flanges; ASME B16.47 – Large Diameter Steel Flanges; ASME B16.1 – Cast Iron Pipe Flanges and Flanged Fittings;
Size: 1/2”-48” (15NB-1200NB)
Standards: ANSI B16.5, ANSI B 16.47 SERIES a&b,MSS SP44,ASA,API-605,AWWA
Pressure ratings:
class150, class300, class400, class600, class900, class1500, class2500 | PN6pn10, PN25, PN40, PN64 etc.
Facing Types: Raised Face, Flat Face, Ring Type Joint, Male, Female, Groove, Lens Joint, Lap Joint
Carbon Steel Threaded flange: 

ASTM SA/A105(N),C22.8,ST37.2,A516 GR60/70,ASTM SA350 LF2,ASTM SA694 F42/46/52/56/60/65…
Stainless Steel Threaded flange:
ASTM A182 F304/304L/316/316L…
Duplex Stainless Steel: ASTM A182 F51/F53/F55/F60…
Alloy Steel Threaded flange:
ASTM A182 F1/F5/F9/F11/F22/F91…