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A coupling is used to connect two pipes together as the name suggests it couples pipes. Couplings come in various types depending on attachment and adjoining pipes. A reducing coupling is used where two pipes are of differing size. Threaded coupling have threading of fixed dimension mostly female that is attached to another threaded pipe which is not connected to another pipe with a male threading. Couplings come in half as well full threaded types wherein full threaded ones have short but equal threading on both ends. Half coupling is a full coupling cut half symmetrically and can be only fastened on end to pipe.
|Standards||:||ASME A182, ASME B16.9, ASME B16.11, MSS SP-43, MSS SP-95, BS3799|
|Size||:||1/4" to 4"|
|Class||:||2000LBS, 3000LBS, 6000LBS|
|Type||:||Threaded - SCREWED (SCRD) – NPT, BSP, BSPT|
|Range||:||Union, Tee, Elbow, Socket, Nipple, Coupling, Half Coupling, Full Coupling|
Stainless Steel Threaded Half & Full Couplings :
ASTM / ASME SA A182 F304, 304H, 309, 310, 316, 316L, 317L, 321, 347, 904L
Carbon Steel Threaded Half & Full Couplings :
ASTM/ ASME A 105, ASTM/ ASME A 350 LF 2
Alloy Steel Threaded Half & Full Couplings :
ASTM / ASME A182 F1/ F5/ F9/ F11/ F22/ F91
Nickel Alloy Threaded Half & Full Couplings :
ASTM / ASME SB 336 UNS 2200 (NICKEL 200) , UNS 2201 (NICKEL 201 ) , UNS 4400 (MONEL 400 ) , UNS 8020 ( ALLOY 20 / 20 CB 3 ) , UNS 8825 INCONEL (825) , UNS 6600 (INCONEL 600 ) , UNS 6601 (INCONEL 601) , UNS 6625 (INCONEL 625) , UNS 10276 (HASTELLOY C 276)
Duplex & Super Duplex Steel Threaded Half & Full Couplings :
ASTM A 182 – F 51, F53, F55 S 31803, S 32205, S 32550, S 32750, S 32760, S 32950.
Copper Alloy Steel Threaded Half & Full Couplings :
ASTM / ASME SB 111 UNS NO. C 10100 , C 10200 , C 10300 , C 10800 , C 12000, C 12200, C 70600 , C 71500
ASTM / ASME SB 466 UNS NO. C 70600 ( CU -NI- 90/10) , C 71500 ( CU -NI- 70/30)