What is Threaded Half Coupling?
A stainless steel threaded half coupling is a type of plumbing fitting that is used to connect two pipes or fittings together. It is made of corrosion-resistant stainless steel and has threads on one end to allow it to be screwed onto a pipe or fitting. The other end is open and is typically used to connect to another pipe or fitting via welding, threading or other connection method. Half couplings are typically used in applications where a smaller coupling is needed to join two pipes together. They are commonly used in residential plumbing, commercial plumbing, industrial and marine applications.
Difference Between Half Coupling And Full Coupling
- De threaded half coupling differ and depend on the piping it is used in. The stainless steel threaded half coupling is the most used one in terms of the composition material.
- The threaded full coupling is a pipe fitting of short length that has two pipes joined together by threads at both ends
Specifications of ASME B16.11 Threaded Half Koppeling
| Maten | 1/8″NB naar 4″NB (DN6 x DN100) |
| Normen | ASME/ANSI B16.11, MSS SP-79, MSS-SP-95, 83, 97, DIN 28011, DIN 2617, DIN 2616, DIN 2615, DIN 2605, EN 10253-2, EN 10253-1 |
| Afmetingen | ASME 16.11, MSS SP-79, MSS SP-95, 83, 95, 97, BS 3799 |
| Dikte | Model 5S, 10S, 20S, S10, S20, S30, STD, 40S, S40, S60, XS, 80S, S80, S100, S120, S140, S160, XXS enzovoort. |
| Drukklasse | 3000 LBS, 6000 LBS, 9000 LBS |
| Van | Threaded / Screwed Coupling, Threaded Forged Half Coupling |
| Cijfers&Materialen | 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 | Lasverbinding (S/W) & schroefverbinding (SCRD) – NPT, BSP, BSPT |
ANSI B16.11 Stainless Steel Threaded Half Coupling Manufacturing Standards
| ASME-norm | ASME/ANSI B16.11, MSS SP-79, MSS-SP-95, 83, 97 |
| DIN-norm | DIN 28011, DIN 2617, DIN 2616, DIN 2615, DIN 2605 |
| EN-norm | EN 10253-2, EN 10253-1 |
| ASME B16.11 | Met schroefdraad |
| ASTM A182 – ASME SA182 | Standaardspecificatie voor gesmede austenitische roestvrijstalen leidingfittingen met schroefdraad |
| MSS SP-95 | Volledige koppeling met schroefdraad |
NPT Threaded Half Coupling Materials and Grades
| Roestvrijstalen halve koppeling met schroefdraad |
| ASTM A403 WP Gr. 304, 304L, 304H, 310, 316, 316L, 316H, 316Ti, 317L, 321, 347, 904L |
| Carbon Steel Threaded Half Coupling |
| ASTM A234 WPB, WPBW, WPHY 70, WPHY 65, WPHY 60, WPHY 52, WPHY 46 en WPHY 42. |
| Low Temperature Threaded Half Coupling |
| ASTM A420 WPL6, ASTM A420 WPL3 |
| Alloy Steel Threaded Half Coupling |
| ASTM / ASME A/SA 234 Gr. WP1, WP5, WP9, WP11, WP12, WP22, WP91 |
| Duplex & Super Duplex Steel Threaded Half Coupling |
| ASTM A815, ASME SA815, UNS-nr. S31803, UNS-nr. S32205, UNS S32750, UNS S32950. Werkstofnr. 1.4462 |
| Nickel Alloy Threaded 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) |
High Pressure Threaded Half Coupling Types by Size, Class, and Wall Thickness
| Beschrijving | Klasse-aanduiding | ||
| 2000 | 3000 | 6000 | |
| Volledige koppeling met schroefdraad | 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 | |
| Pijpwand | SCH 80 / XS | SCH 160 | XXS |
Threaded Half Coupling Dimensions

Threaded Half Coupling Dimensions
| NOMINALE BUISDIAMETER | VAN BEGIN TOT EINDE | MINIMALE LENGTE VAN DE DRAAD | BUITENDIAMETER | ||
| Inch. | Volledige koppeling | #3000 | #6000 | ||
| A | B | C | D | D | |
| 1/8 | 32 | 6.7 | 6.4 | 16 | 22 |
| 1/4 | 35 | 10.2 | 8.1 | 19 | 25 |
| 3/8 | 38 | 10.4 | 9.1 | 22 | 32 |
| 1/2 | 48 | 13.6 | 10.9 | 28 | 38 |
| 3/4 | 51 | 13.9 | 12.7 | 35 | 44 |
| 1 | 60 | 17.3 | 14.7 | 44 | 57 |
| 1 1/4 | 67 | 18 | 17 | 57 | 64 |
| 1 1/2 | 79 | 18.4 | 17.8 | 64 | 76 |
| 2 | 86 | 19.2 | 19 | 76 | 92 |
| 2 1/2 | 92 | 28.9 | 23.6 | 92 | 108 |
| 3 | 108 | 30.5 | 25.9 | 108 | 127 |
| 4 | 121 | 33 | 27.7 | 140 | 159 |
| Alle afmetingen zijn in mm | |||||
ASME B16.11 Threaded Half Coupling Angularity Tolerance
| ND | Maximale afwijkingshoek | Max buiten het vlak |
| Q | P | |
| 1/2 van 4 | 1 | 2 |
| 5 tot en met 8 | 2 | 4 |
| 10 tot 12 | 3 | 5 |
| 14 tot en met 16 | 3 | 7 |
| 18 tot en met 24 | 4 | 10 |
| 26 tot en met 30 | 5 | 10 |
| 32 tot 42 | 5 | 13 |
| 44 tot en met 48 | 5 | 20 |
ASME B16.11 Half Coupling Temperature
| ASME B16.11 Half Coupling Temperature | Les | ||||
| 150 | 300 | ||||
| 1/4 – 1 inch. | 1 1/4 – 2 inch. | 2 1/2 – 3 inch. | |||
| (oF) | (°C) | ||||
| -20 tot 150 | -29 tot 66 | 300 | 2000 | 1500 | 1000 |
| 200 | 93 | 265 | 1785 | 1350 | 910 |
| 250 | 121 | 225 | 1575 | 1200 | 825 |
| 300 | 149 | 185 | 1360 | 1050 | 735 |
| 350 | 177 | 150 | 1150 | 900 | 650 |
| 400 | 204 | – | 935 | 750 | 560 |
| 450 | 232 | – | 725 | 600 | 475 |
| 500 | 260 | – | 510 | 450 | 385 |
| 550 | 288 | – | 300 | 300 | 300 |
ASME B16.11 Threaded Half Coupling Weight

ASME B16.11 Threaded Half Coupling Weight pic

ASME B16.11 Threaded full Coupling drawing

ASME B16.11 Threaded Half Coupling Drawing
| DN | Nominale buismaat | Koppeling met centraal eindpunt W | Middenpunt tot eindkap P | Buitendiameter | Eindwand Dikte G Min. | Lengte van de schroefdraad Min. (1) | ||||
| 000 en 6000 | 3000 | 6000 | 3000 | 6000 | 3000 | 6000 | B | L2 | ||
| 6 | 1/8″ | 32 | 19 | 16 | 4.8 | 6.4 | 6.7 | |||
| 8 | 1/4″ | 35 | 25 | 27 | 19 | 25 | 4.8 | 6.4 | 8.1 | 10.2 |
| 10 | 3/8″ | 38 | 25 | 27 | 22 | 32 | 4.8 | 6.4 | 9.1 | 10.4 |
| 15 | 1/2″ | 48 | 32 | 33 | 28 | 38 | 6.4 | 7.9 | 10.9 | 13.6 |
| 20 | 3/4″ | 51 | 37 | 38 | 35 | 44 | 6.4 | 7.9 | 12.7 | 13.9 |
| 25 | 1″ | 60 | 41 | 43 | 44 | 57 | 9.7 | 11.2 | 14.7 | 17.3 |
| 32 | 1-1/4″ | 67 | 44 | 46 | 57 | 64 | 9.7 | 11.2 | 17.0 | 18.0 |
| 40 | 1-1/2″ | 79 | 44 | 48 | 64 | 76 | 11.2 | 12.7 | 17.8 | 18.4 |
| 50 | 2″ | 86 | 48 | 51 | 76 | 92 | 12.7 | 15.7 | 19.0 | 19.2 |
| 65 | 2-1/2″ | 92 | 60 | 64 | 92 | 108 | 15.7 | 19.0 | 23.6 | 28.9 |
| 80 | 3″ | 108 | 65 | 68 | 108 | 127 | 19.0 | 22.4 | 25.9 | 30.5 |
| 100 | 4″ | 121 | 68 | 75 | 140 | 159 | 22.4 | 28.4 | 27.7 | 33.0 |
(1) Afmetingen in millimeter
(2) Afmeting B is de minimale lengte van een perfecte schroefdraad. De lengte van de bruikbare schroefdraad (B plus de schroefdraadgedeelten met volledig gevormde voetjes en vlakke toppen) mag niet kleiner zijn dan L2 (effectieve lengte van de buitendraad) zoals vereist door de Amerikaanse nationale norm voor pijpdraad (ANSI/ASME B1.20.1)
TYPES OF ASME B16.11 THREADED Half COUPLING
| Forged Threaded Half Coupling | Threaded Half Coupling Stainless Steel |
| SS Forged Threaded Half Coupling | BS 3799 Forged Screwed Half Coupling |
| ASTM A182 Threaded Half Coupling | Duplex Steel Threaded Half Coupling |
| Carbon Steel Threaded Half Coupling | High Quality Threaded Half Coupling |
| Titanium Forged Threaded Half Coupling | Inconel Threaded Forged Half Coupling |
| Super Duplex Steel Screwed Half Coupling | Copper Nickel Threaded Half Coupling |
| High Nickel Alloy Threaded Half Coupling | Hastelloy Screwed Half Coupling Pipe Fittings |
| 150 lb. Threaded Half Coupling Fittings | 6000LBS Forged Steel Threaded Half Coupling |
| ASME B16.11 Forged Threaded Pipe Half Coupling | Threaded Forged Half Coupling 3000LBS |
| ANSI B16.11 Forged Threaded Half Coupling | Asme B16.11 Half Coupling Threaded – Class 3000 |
Applications Of ASME B 16.11 Threaded Half Koppeling
- ASME B 16.11 Threaded Half Coupling used in Chemical and petrochemical processing
- ASME B 16.11 Threaded Half Coupling used in refineries
- ASME B 16.11 Threaded Half Coupling used in electronics
- ASME B 16.11 Threaded Half Coupling used in fertilizer
- ASME B 16.11 Threaded Half Coupling used in power plant
- ASME B 16.11 Threaded Half Coupling used in nuclear power
- ASME B 16.11 Threaded Half Coupling used in oil and gas
- ASME B 16.11 Threaded Half Coupling used in paper industries
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