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Half Coupling - Forged Fitting

Half Coupling

Half Coupling

Half Coupling — ASME B16.11 / related MSS

Savoy Piping Inc. manufactures and supplies half coupling in socket weld and threaded ends for small-bore process and utility piping. Dimensions and pressure classes follow ASME B16.11 (and MSS SP-79 / SP-83 / SP-95 where applicable), with ASTM/ASME forging grades for chemistry and mechanicals.

Related: Forged fittings hub · 90° Elbow · 45° Elbow · Tee · Cross.

What are Half Coupling?

A half coupling is welded or threaded on one side only — typically as a branch outlet onto a header or vessel nozzle. Socket weld and threaded half couplings are supplied to ASME B16.11.

Selection guidance

Specify end type, NPS, pressure class and whether the coupling will be welded onto pipe, plate or a fitting. Related forms: 90° Elbow · 45° Elbow · Tee · Cross · all forged fittings.

What to put on the PO

Include material grade / ASTM class, end type (socket weld or threaded), fitting form, size, pressure class, quantity, destination, and documentation (EN 10204 3.1 / 3.2, PMI, NACE, TPI). Email sales@savoypipinginc.com.

By material

Same fitting form across stainless, carbon, alloy, duplex and nickel grades

Half Coupling Range

Half Coupling Specification ASTM A182 / ASTM SA182, ASTM A105 / ASME SA105, ASTM A350 / ASME SA350, ASTM A694 / ASME SA694, ASTM B462 / ASME SB462 / ASTM B564 / ASME SB564, ASTM B151 / ASME SB151, ASTM B381 / ASME SB381
Half Coupling Manufacturing Process Forging / Socket / Threaded / Screwed
Half Coupling Available Other Grades Stainless Steel - F304, F304L, F304H, F310s, F316, F316L, F317L, F321, F347, F94L, F410, F446 etc.
Carbon Steel - 105N, LF2, F42, F46, F52, F56, F60, F65 etc.
Alloy Steel - F5, F9, F11, F22, F91, 4140, Class 1, 2, 3 etc.
Duplex and Super Duplex - F51, F53, F55, UNS S31803, UNS S32750, UNS S32760 etc.
Inconel - 600, 601, 625, 718, UNS N06600, UNS N06601, UNS N06625, UNS N07718 etc.
Incoloy - 800, 800H, 800HT, 825, UNS N08800, UNS N08810, UNS N08811, UNS N08825 etc.
Monel - 400, UNS N04400 etc.
Hastelloy - C276, C22, UNS N10276, UNS N06022 etc.
Titanium - Grade 2, Grade 3, UNS R50400, UNS R56200 etc.
Copper Nickel - 90/10, 70/30, UNS C71500, UNS C70600 etc.
Other - Alloy 20, SMO 254, F44, 6 Moly, UNS N08020, UNS N031254 etc.
Half Coupling Outer Diameter 1/8" NB TO 4" NB (DN6 to DN100)
Half Coupling Pressure Class 2000 LBS, 3000 LBS, 6000 LBS ,9000 LBS or As Per Custom Requirement
Half Elbow Other Fittings Types 45 Degree Elbow, 90 Degree Elbow, Lateral, Tee, Reducer Insert, Full Coupling, Half Coupling, Reducing Coupling, Cap, Union, Cross, Boss, Plug, Bushing etc.
Half Coupling Dimension ASME 16.11 - Socket Welding and Threaded Forged Fittings
MSS SP-79 - Socket Welding Reducer Inserts
MSS SP-83 - Socket Weld Union
MSS SP-95 - Swage(d) Nipples and Bull Plugs
BS 3799 - Specification for Steel Pipe Fittings, Screwed and Socket-welding for the petroleum industry.
Half Coupling Other Testing Tensile, Hardness Test, Chemical Analysis – Spectro Analysis, Positive Material Identification – PMI Testing, Flattening Test, Micro and Macro Test, Pitting Resistance Test, Flaring Test, Intergranular Corrosion (IGC) Test, NACE MR0175, Ultrasound Test, ASTM A262 Practice E, Charpy Impact Test, Grain Size, Dye Penetrant Test etc.
Half Coupling Packaging Carrate / Wooden Pallet / Wooden box-a
Half Coupling Shipment & Transportation By Road - Truck / Train Partial Load, Full Load, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 4 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes
Half Coupling Material Test Certificate Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS, Bureau of Indian Standards BIS Approved ETC

Dimensions of Socket Weld Full Coupling and Threaded Half Coupling ASME B16.11 - NPS 1/2 to 4 - Class 3000

Full Coupling, Socket weld Full Coupling, Forged Full Coupling, Threaded Full Coupling, Screwed Full Coupling, Half Coupling, Socket weld Half Coupling, Forged Half Coupling, Threaded Half Coupling, Screwed Half Coupling
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		 4.9
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 48.9
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 9.15
89.80		 16 79.5
46.4		 9.50
8.30
4 115.80
115.4		 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

Dimensions of Socket Weld Full Coupling and Threaded Half Coupling ASME B16.11 - NPS 1/2 to 2 - Class 6000

Full Coupling, Socket weld Full Coupling, Forged Full Coupling, Threaded Full Coupling, Screwed Full Coupling, Half Coupling, Socket weld Half Coupling, Forged Half Coupling, Threaded Half Coupling, Screwed Half Coupling
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		 7.9
6.95
1.1/4 42.80
42.55		 13 30.2
28.7		 7.9
6.95
1.1/2 48.9
48.65		 13 34.7
33.2		 8.9
7.80
2 61.35
61.10		 16 43.6
42.1		 10.9
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

Genral Notes

  • Dimensions are in millimeters unless otherwise indicated.
  • Socket Bore (B) - Maximum and Minimum dimensions.
  • Bore Diameter (D) - Maximum and Minimum dimensions.
  • Socket wall thickness - (C) - Average of Socket wall thickness.
  • Dimensional tolerances laying lengths - (E & F)
    NPS 1/2 and NPS 3/4 = +/- 1.5 mm
    NPS 1 to NPS 2 = +/- 2 mm
    NPS 2.1/2 to NPS 4 = +/- 2.5 mm

Dimensions of Full Coupling and Threaded Half Coupling ASME B16.11 - NPS 1/2 to 4 - Class 3000

Full Coupling, Socket weld Full Coupling, Forged Full Coupling, Threaded Full Coupling, Screwed Full Coupling, Half Coupling, Socket weld Half Coupling, Forged Half Coupling, Threaded Half Coupling, Screwed Half Coupling
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
1.1/4 67 57 17 18
1.1/2 79 64 17.8 18.4
2 86 76 19 19.2
2.1/2 92 92 23.6 28.9
3 108 108 25.9 30.5
4 121 140 27.7 33
NPS A D B J
End to End Outside
Diameter		 Minimum
Length
of Thread

Dimensions of Threaded Full Coupling and Threaded Half Coupling ASME B16.11 - NPS 1/2 to 2 - Class 6000

Full Coupling, Socket weld Full Coupling, Forged Full Coupling, Threaded Full Coupling, Screwed Full Coupling, Half Coupling, Socket weld Half Coupling, Forged Half Coupling, Threaded Half Coupling, Screwed Half Coupling
NPS End to End Outside
Diameter		 Minimum
Length
of Thread
A D B J
1/2 48 38 10.9 13.6
3/4 51 44 12.7 13.9
1 60 57 14.7 17.3
1.1/4 67 64 17 18
1.1/2 79 76 17.8 18.4
2 86 92 19 19.2
2.1/2 92 108 23.6 28.9
3 108 127 25.9 30.5
4 121 159 27.7 33
NPS A D B J
End to End Outside
Diameter		 Minimum
Length
of Thread

General notes:

  • Dimensions are in millimeters unless otherwise indicated.
  • Dimension (B) is minimum length of perfect thread.
    The length of useful thread (B plus threads with fully formed roots and flat crests) shall not be less than J.

Typical applications

  • Branch outlets from headers
  • Instrument and drain connections
  • Vessel and equipment nozzles
  • Utility take-offs

Frequently asked questions

What are Half Coupling?

Half Coupling are forged small-bore fittings used to join pipe, valves and instrumentation with socket weld or threaded ends. Size, class and material must match the piping class.

Which standards apply?

Dimensional: ASME B16.11 for most forged fittings; MSS SP-79 (reducer inserts), MSS SP-83 (unions) and MSS SP-95 (swage nipples / bull plugs) where applicable. Material follows the ASTM forging spec that matches the pipe (A182, A105, A350, A694, B564, etc.).

When should I choose Half Coupling?

Choose Half Coupling when the piping class and installation method call for this connection form. Confirm end type, NPS and Class 3000 / 6000 / 9000 on the purchase order.

What should be on the purchase order?

Material grade / ASTM class, end type (SW or threaded), fitting form, size, pressure class, quantity, destination, and documentation (EN 10204 3.1 or 3.2, PMI, NACE, TPI if required). Email sales@savoypipinginc.com.

Half Coupling Exported Countries

We Export Socket weld Half Coupling to Saudi Arabia, Iran, Iraq, United Arab Emirates, Qatar, Bahrain, Oman, Kuwait, Turkey, Egypt, Yemen, Syria, Israel, Jordan, Cyprus, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Myanmar, Taiwan, Cambodia, Argentina, Bolivia, Brazil, Chile, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay, United States Of America, Canada, Mexico, Panama, Costa Rica, Puerto Rico, Trinidad And Tobago, Jamaica, Bahamas, Denmark, Russia, Norway, Germany, France, Italy, United Kingdom, Spain, Ukraine, Netherlands, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Switzerland, Slovakia, Finland, Ireland, Croatia, Slovenia, Malta, Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Equatorial Guinea, The Republic Of Congo, Gabon, Europe, Africa, Asia, North America, South America, Middle East, Far East.etc

Half Coupling Supplying in States and Cities

We Supply Threaded Half Coupling Andhra Pradesh, Arunachal Pradesh, Assam, Bihar, Chhattisgarh, Goa, Gujarat, Haryana, Himachal Pradesh, Jammu and Kashmir, Jharkhand, Karnataka, Kerala, Madhya Pradesh, Maharashtra, Manipur, Meghalaya, Mizoram, Nagaland, Odisha, Punjab, Rajasthan, Sikkim, Tamil Nadu, Telangana, Tripura, Uttar Pradesh, Uttarakhand, West Bengal, Mumbai, Navi Mumbai, Pune, Nashik, Nagpur, Solapur, Kolhapur, Ambernath, Ahmednagar, Latur, Ahmadabad, Surat, Rajkot, Vadodara, Panaji, Madgaon, Chennai, Kolkata, Hyderabad, Bengaluru, Delhi, New Delhi, Ludhiana, Chandigarh, Raipur, Bhopal, Jamshedpur, Vishakhapatnam, Cochin, Ghaziabad, Noida, Gurugram, Bhillai, Durgapur, Vijaywada, Kanpur etc.

Savoy Piping Inc., is a well known worldwide Exporter of Forged Half Coupling, Savoy Piping Inc., is committed to provide each and every customer with the highest standard of customer service. We deal in Threaded Half Coupling in India and Overseas, offering a wide range of Socket weld Half Coupling