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What is a Socket Weld Full Coupling ？
The Socket Weld Half Coupling are often directly welded to the run pipe, to form a branch connection. Half coupling is socket welding in one end and butt welding for the another end. The Socket Weld Pipe Half Coupling are widely utilized in the aerospace industry as connectors to pressurize fuel piping. Various space shuttles have often had their launches delayed thanks to a half-coupling which needed closer inspection for safety reasons. A Socket Weld coupling may be a connector wont to screw two pieces of pipe together using threaded rings. Socket Weld Half-couplings are only threaded at one end. The opposite end is welded or otherwise fastened to the piping. Half-couplings are available male and feminine varieties. The male Socket Weld half-couplings have external threads that the pipe fits over. Female Socket Weld half-couplings have internal threads. The piping is inserted and twisted to secure the connection.
Socket Weld Half Coupling Specifications
| Sizes | 1/2″NB TO 4″NB IN |
| Standards | ASME/ANSI B16.11, MSS SP-79, MSS-SP-95, 83, 97，DIN28011, DIN2617, DIN2616, DIN2615, DIN2605，EN10253-2, EN10253-1 |
| Dimensions | ASME 16.11, MSS SP-79, MSS SP-95, 83, 95, 97, BS 3799 |
| Thickness | Schedule 5S, 10S, 20S, S10, S20, S30, STD, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS and etc. |
| Pressure Ratings | 2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS |
| From | Socket Weld Half Coupling |
| Grades&Materials | ASTM A403 WP Gr. 304, 304L, 304H, 310, 316, 316L, 316H, 316Ti, 317L, 321, 347, 904L，ASTM A234 WPB, WPBW, WPHY 70, WPHY 65, WPHY 60, WPHY 52, WPHY 46, & WPHY 42，ASTM A420 WPL6, ASTM A420 WPL3，ASTM / ASME A/SA 234 Gr. WP1, WP5, WP9, WP11, WP12, WP22, WP91，ASTM A815, ASME SA815 UNS NO S31803, UNS NO S32205, UNS S32750, UNS S32950. Werkstoff No. 1.4462，UNS 10276 (HASTELLOY C 276), UNS 6625 (INCONEL 625), UNS 6601 (INCONEL 601), UNS 6600 (INCONEL 600), UNS 8825 (INCONEL 825), UNS 8020 (ALLOY 20 / 20 CB 3), UNS 4400 (MONEL 400), UNS 2201 (NICKEL 201), ASTM / ASME SB 336 UNS 2200 (NICKEL 200) |
| Type | Socket Weld (S/W) & SCREWED (SCRD) – NPT, BSP, BSPT |
Manufacturing Standards of Socket Weld Half Coupling
| ASME Standard | ASME/ANSI B16.11, MSS SP-79, MSS-SP-95, 83, 97 |
| DIN Standard | DIN28011, DIN2617, DIN2616, DIN2615, DIN2605 |
| EN Standard | EN10253-2, EN10253-1 |
| ASME B16.11 | Socket Weld Fittings, Socket – Welding and Threaded |
| ASTM A182 – ASME SA182 | Standard Specification for Wrought Austenitic SS Piping Socket Weld Fittings |
| MSS SP-95 | Swage(d) Nipples and Bull Plugs |
Forged Socket Weld Half Coupling Materials and Grades
| Stainless Steel Socket Weld Half Coupling |
| ASTM A403 WP Gr. 304, 304L, 304H, 310, 316, 316L, 316H, 316Ti, 317L, 321, 347, 904L |
| Carbon Steel Socket Weld Half Coupling |
| ASTM A234 WPB, WPBW, WPHY 70, WPHY 65, WPHY 60, WPHY 52, WPHY 46, & WPHY 42. |
| Low Temperature Socket Weld Half Coupling |
| ASTM A420 WPL6, ASTM A420 WPL3 |
| Alloy Steel Socket Weld Half Coupling |
| ASTM / ASME A/SA 234 Gr. WP1, WP5, WP9, WP11, WP12, WP22, WP91 |
| Duplex & Super Duplex Steel Socket Weld Half Coupling |
| ASTM A815, ASME SA815 UNS NO S31803, UNS NO S32205, UNS S32750, UNS S32950. Werkstoff No. 1.4462 |
| Nickel Alloy Socket Weld Half Coupling |
| UNS 10276 (HASTELLOY C 276), UNS 6625 (INCONEL 625), UNS 6601 (INCONEL 601), UNS 6600 (INCONEL 600), UNS 8825 (INCONEL 825), UNS 8020 (ALLOY 20 / 20 CB 3), UNS 4400 (MONEL 400), UNS 2201 (NICKEL 201), ASTM / ASME SB 336 UNS 2200 (NICKEL 200) |
Socket Weld Half Coupling Fittings Types BY Size, Class, and Wall Thickness
| Description | Class Designation | ||
| 2000 | 3000 | 6000 | |
| Half Coupling | 1/2 – 4 | 1/2 – 2 | 1/2 – 2 |
| 1/2 – 4 | 1/2 – 2 | 1/2 – 2 | |
| 1/2 – 4 | 1/2 – 2 | 1/2 – 2 | |
| Pipe Size
by Wall Thickness |
SCH 80 / XS | SCH 160 | XXS |
Dimensions of ASME B16.11 Socket Weld Half Coupling
Dimensions of ASME B16.11 Socket Weld Half Coupling
3000 LB Socket Weld Half Coupling Dimensions
| NPS | Socket Bore |
Depth Socket |
Bore DIA |
Socket wall THK |
| B | J | D | C | |
| 1/2 | 21.95 21.70 |
10 | 16.6 15 |
4.65 4.10 |
| 3/4 | 27.30 27.05 |
13 | 21.7 20.2 |
4.90 4.25 |
| 1 | 34.05 33.80 |
13 | 27.4 25.9 |
5.70 5.00 |
| 1.1/4 | 42.80 42.55 |
13 | 35.8 34.3 |
6.05 5.30 |
| 1.1/2 | 48.90 48.65 |
13 | 41.7 40.1 |
6.35 5.55 |
| 2 | 61.35 61.10 |
16 | 53.5 51.7 |
6.95 6.05 |
| 2.1/2 | 74.20 73.80 |
16 | 64.2 61.2 |
8.75 7.65 |
| 3 | 90.15 89.80 |
16 | 79.5 46.4 |
9.50 8.30 |
| 4 | 115.80 115.45 |
19 | 103.8 100.7 |
10.70 9.35 |
| NPS | Laying lengths | |||
| Coupling E |
Half coupling F |
|||
| 1/2 | 9.5 | 22.5 | ||
| 3/4 | 9.5 | 23.5 | ||
| 1 | 13 | 29 | ||
| 1.1/4 | 13 | 30 | ||
| 1.1/2 | 13 | 32 | ||
| 2 | 19 | 41 | ||
| 2.1/2 | 19 | 42.5 | ||
| 3 | 19 | 44.5 | ||
| 4 | 19 | 47.5 | ||
Class 6000 Socket Weld Half Coupling Dimensions
| NPS | Socket Bore |
Depth Socket |
Bore DIA |
Socket wall THK |
| B | J | D | C | |
| 1/2 | 21.95 21.70 |
10 | 12.5 11 |
5.95 5.20 |
| 3/4 | 27.30 27.05 |
13 | 16.3 14.8 |
6.95 6.05 |
| 1 | 34.05 33.80 |
13 | 21.5 19.9 |
7.90 6.95 |
| 1.1/4 | 42.80 42.55 |
13 | 30.2 28.7 |
7.90 6.95 |
| 1.1/2 | 48.90 48.65 |
13 | 34.7 33.2 |
8.90 7.80 |
| 2 | 61.35 61.10 |
16 | 43.6 42.1 |
10.90 9.50 |
| NPS | Laying lengths | |||
| Coupling E |
Half coupling F |
|||
| 1/2 | 9.5 | 22.5 | ||
| 3/4 | 9.5 | 23.5 | ||
| 1 | 13 | 29 | ||
| 1.1/4 | 13 | 30 | ||
| 1.1/2 | 13 | 32 | ||
| 2 | 19 | 41 | ||
Socket Weld Half Coupling Pipe Fittings Weight Chart
| Name | Working Pressure | 1/4” | 3/8” | 1/2” | 3/4” | 1” | 1-1/4” | 1-1/2” | 2” |
| Coupling S/W | 3000# | 9 | 18 | 26 | 40 | 92 | 152 | 229 | 462 |
| Coupling Screw | 3000# | 9 | 18 | 26 | 40 | 92 | 152 | 229 | 462 |
Dimensional Tolerances of Socket Weld Half Coupling as per ASME B16.11
| Socket Weld Half Coupling ASME B16.11 Tolerance (Half Coupling) | Half Coupling | |||
| Socket Weld Fitting Dimension (NPS) | Outside Diameter at Bevel |
Inside Diameter at End |
Wall Thickness T | Center-to-End Dimension A ,C ,B |
| 1/2 to 2-1/2 | +0.06 | Not less than 87.5% of nominal thickness |
+/- 0.06 | |
| -0.03 | ||||
| 3 to 3-1/2 | +/- 0.06 | +/- 0.06 | +/- 0.06 | |
| 4 | +/- 0.06 | +/- 0.06 | +/- 0.06 | |
| 5 to 8 | +/- 0.06 | +/- 0.06 | +/- 0.06 | |
| 10 to 18 | +0.16 | +/- 0.12 | +/- 0.09 | |
| -0.12 | ||||
| 20 to 24 | +0.25 | +/- 0.19 | +/- 0.09 | |
| -0.19 | ||||
| 26 to 30 | +0.25 | +/- 0.19 | +/- 0.12 | |
| -0.19 | ||||
| 32 to 48 | +0.25 | +/- 0.19 | +/- 0.19 | |
| -0.19 | ||||
ASME B16.11 SS Socket Weld Half Coupling Angularity Tolerance
| ND | Max off angle | Max off plane |
| Q | P | |
| 1/2 a 4 | 1 | 2 |
| 5 a 8 | 2 | 4 |
| 10 a 12 | 3 | 5 |
| 14 a 16 | 3 | 7 |
| 18 a 24 | 4 | 10 |
| 26 a 30 | 5 | 10 |
| 32 a 42 | 5 | 13 |
| 44 a 48 | 5 | 20 |
Available Types of ASME B16.11 Socket Weld Half Coupling
| ANSI B16.11 Forged Socket weld Half Coupling | BS 3799 Forged Half Coupling |
| Forged Socket weld Half Coupling | Socket weld Forged Pipe Half Coupling |
| Carbon Steel Socket weld Half Coupling | High Quality Socket weld Half Coupling |
| ASTM A182 Socket weld Stainless Steel Half Coupling | Duplex Steel Socket weld Half Coupling |
| Forged Steel Socket weld Half Coupling | Forged Socket weld Half Coupling |
| 150 lb. Socket Weld Fittings Half Coupling | Socket weld Forged Half Coupling |
| ASME B16.11 Forged Socket weld Half Coupling | Forged Half Coupling 3000LB Socket Weld |
| Stainless Steel Socket Weld Half Coupling | SS Forged Socket weld Half Coupling |
| Super Duplex Steel Socket Weld Half Coupling | Copper Nickel Socket weld Half Coupling |
| High Nickel Alloy Forged Socket weld Half Coupling | Hastelloy Socket weld Half Coupling |
| Titanium Forged Socket weld Half Coupling | Inconel Socket weld Half Coupling |
Stainless Steel Socket Weld Half Coupling Pipe Fittings Applications
- Off-Shore Oil Drilling Companies
- Power Generation
- Gas Processing
- Petrochemicals
- Pharmaceutical Equipment
- Specialty Chemicals
- Chemical Equipment
- Pharmaceuticals
- Pulp & Paper Industry
- Sea Water Equipment
- Heat Exchangers
- Condensers
