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threaded coupling ends design (npt or bsp)
in case of the threaded coupling, the coupling ends normally in female of npt (national pipe threads) or in male and female bsp (british standard pipe threads). where in north american term, a coupler is a double female while a nipple is double male.
so there are several variation types:
coupling has one end threads in npt another end in bsp, then an adapter shall be used during installation.
coupling has one end in socket weld, another end in threaded socket.
one end in bigger npt another in smaller dia npt. (also called reducing coupling or reducer coupling)
half threaded couplings
size | class | dimension | specification |
1/4" to 4" | 2000, 3000, 6000, 9000 | ansi b 16.11 | astm a 182/asme sa182 |
stainless steel half threaded coupling
astm / asme sa a182 f304, 304h, 309, 310, 316, 316l, 317l, 321, 347, 904
carbon steel half threaded coupling
astm/ asme a 105, astm/ asme a 350 lf 2
alloy steel half threaded coupling
astm / asme a182 f1/ f5/ f9/ f11/ f22/ f91
nickel alloy half threaded coupling
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 steel half threaded coupling
astm a 182 – f 51, f53, f55 s 31803, s 32205, s 32550, s 32750, s 32760
full threaded couplings
size | class | dimension | specification |
1/4" to 4" | 2000, 3000, 6000, 9000 | ansi b 16.11 | astm a 182 |
stainless steel full threaded coupling
astm / asme sa a182 f304, 304h, 309, 310, 316, 316l, 317l, 321, 347, 904l
carbon steel full threaded coupling
astm/ asme a 105, astm/ asme a 350 lf 2
alloy steel full threaded coupling
astm / asme a182 f1/ f5/ f9/ f11/ f22/ f91
nickel alloy full threaded coupling
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 steel full threaded coupling
astm a 182 – f 51, f53, f55 s 31803, s 32205, s 32550, s 32750, s 32760
threaded reducing couplings
size | class | dimension | specification |
1/4" to 4" | 2000, 3000, 6000, 9000 | ansi b 16.11 | astm a 182 |
stainless steel threaded reducing coupling
astm / asme sa a182 f304, 304h, 309, 310, 316, 316l, 317l, 321, 347, 904l
carbon steel threaded reducing coupling
astm/ asme a 105, astm/ asme a 350 lf 2
nickel alloy threaded reducing coupling
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 steel threaded reducing coupling
astm a 182 – f 51, f53, f55 s 31803, s 32205, s 32550, s 32750, s 32760
dimensions
