What is threaded full coupling?
A threaded full coupling which means a steel pipe coupling has two ends both threaded. It could be a coupling with the thread only on the two ends, also could be a coupling with thread all over the length, they are all called full pipe coupling.
Sometimes the two ends thread may be different, one end is BSP and another end is NPT, then it is like a adaptor for pipes which have different type of thread ends. When installing it, the workers should check the direction for correct match .
Standard: ASME / ANSI B16.11
Class: 3000 LBS, 6000 LBS, 9000 LBS
Material: Available in a complete range of Carbon Steels, Stainless Steels, Alloy Steels and Non-ferrous metals certified to ASTM, ASME Standard.
Sizes: 1/8”- 12” in Class 3000 and 1/8”- 8”in Class 6000
Also available in 1/8 – 8” in 150 # and 1/8”- 4” in Class 9000 and in special lengths
Threads: American National Standard Taper Pipe Threads
NPT (ANSI/ASME B1.20.1-1983)
Also available in other thread forms: NPTF, NPSC, BSPT, BSPP and in any combination.
Left hand threads available upon request.
FORGED FITTINGS THREADED FULL COUPLING MATERIAL & GRADES :
Stainless Steel Threaded Full Coupling : ASTM A182 F304, F304L, F306, F316L, F304H, F309S, F309H, F310S, F310H, F316TI, F316H, F316LN, F317, F317L, F321, F321H, F11, F22, F91, F347, F347H, F904L, ASTM A312/A403 TP304, TP304L, TP316, TP316L
Carbon Steel Threaded Full Coupling : ASTM A105, A350 LF2, A106 Gr.B, A234 WPB
Alloy Steel Threaded Full Coupling : ASTM / ASME A182, ASTM / ASME A335 GR P 1, P 5, P 9, P 11, P 12, P 22, P 23, P 91, ASTM / ASME A691 GR 1 CR, 1 1/4 CR, 2 1/4 CR, 5 CR, 9CR, 91
Duplex Steel Threaded Full Coupling : ASTM/ASME A182 / SA182, A790 / SA790 UNS No S31803, S32205
Super Duplex Threaded Full Coupling : ASTM/ASME A182 / SA182, A790 / SA790 UNS No S32750, S32950
Nickel Alloy Threaded Full Coupling : ASTM B336, ASME SB336, Nickel 200 (UNS No. No2200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020), Titanium (Grade I & II), Copper Nickel (Cupro-Nickel 90/10 & 70/30).
Low Temperature Carbon Steel Threaded Full Coupling : ASTM/ASME A420 SA/420 WPL3, WPL6
DIMENSIONS OF ASME B16.11 THREADED FULL COUPLING
Dimensions threaded Full couplings – NPS 1/2 to 4 – 3000 LBS – ASME B16.11
| NPS | End to End | Outside Diameter | Minimum Length of Thread | |
| A | D | B | J | |
| 1/2 | 48 | 28 | 10.9 | 13.6 |
| 3/4 | 51 | 35 | 12.7 | 13.9 |
| 1 | 60 | 44 | 14.7 | 17.3 |
| 1¼ | 67 | 57 | 17 | 18 |
| 1½ | 79 | 64 | 17.8 | 18.4 |
| 2 | 86 | 76 | 19 | 19.2 |
| 2½ | 92 | 92 | 23.6 | 28.9 |
| 3 | 108 | 108 | 25.9 | 30.5 |
| 4 | 121 | 140 | 27.7 | 33 |
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