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Reducing Coupling - Forged Fitting

Reducing Coupling

Reducing Coupling

Reducing Coupling — ASME B16.11 / related MSS

Savoy Piping Inc. manufactures and supplies reducing 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 Reducing Coupling?

A reducing coupling joins two different pipe sizes in one forged fitting. Socket weld reducing couplings follow ASME B16.11 / related dimensional practice for small-bore size changes.

Selection guidance

List both large and small NPS, end type, class and material. Confirm concentric reducing pattern unless eccentric is specified. 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

Reducing Coupling Range

Reducing 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
Reducing Coupling Manufacturing Process Forging / Socket / Threaded / Screwed
Reducing 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.
Reducing Coupling Outer Diameter 1/8" NB TO 4" NB (DN6 to DN100)
Reducing Coupling Pressure Class 2000 LBS, 3000 LBS, 6000 LBS ,9000 LBS or As Per Custom Requirement
Reducing 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.
Reducing 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.
Reducing 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.
Reducing Coupling Packaging Carrate / Wooden Pallet / Wooden box-a
Reducing 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
Reducing 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 Reducing Coupling ASME B16.11 - NPS 1/2 to 2 - Class 3000

Socket weld Reducing Coupling
NPS Socket Bore Depth Socket
J		 Bore dia
B1 B2 B1 B2 D
3/4 - 1/2 27.30
27.05		 21.95
21.70		 13 10 16.6
15
1 - 3/4 34.05
33.80		 27.30
27.05		 13 13 21.7
20.2
1 - 1/2 34.05
33.80		 21.95
21.70		 13 10 16.6
15
1.1/4 - 1 42.80
42.55		 34.05
33.80		 13 13 27.4
25.9
1.1/2 - 1 48.9
48.65		 34.05
33.80		 13 13 27.4
25.9
1.1/2 - 3/4 48.9
48.65		 27.30
27.05		 13 13 21.7
20.2
1.1/2 - 1/2 48.9
48.65		 21.95
21.70		 13 10 16.6
15
2 - 1.1/2 61.35
61.10		 48.9
48.65		 16 13 41.7
40.1
2 - 1 74.20
73.80		 34.05
33.80		 16 13 27.4
25.9
NPS Length Coupling Diameter Coupling
Q R
3/4 - 1/2 35 36
1 - 3/4 38.1 4.2
1 - 1/2 38.1 4.2
1.1/4 - 1 38.1 55.1
1.1/2 - 1 38.1 60
1.1/2 - 3/4 38.1 60
1.1/2 - 1/2 38.1 60
2 - 1.1/2 51.3 74.9
2 - 1 51.3 74.9

Dimensions of Socket Weld Reducing Coupling ASME B16.11 - NPS 1/2 to 2 - Class 6000

Socket weld Reducing Coupling
NPS Socket Bore Depth Socket
J		 Bore dia
B1 B2 B1 B2 D
3/4 - 1/2 27.30
27.05		 21.95
21.70		 13 10 12.5
11
1 - 3/4 34.05
33.80		 27.30
27.05		 13 13 16.3
14.8
1 - 1/2 34.05
33.80		 21.95
21.70		 13 10 12.5
11
1.1/4 - 1 42.80
42.55		 34.05
33.80		 13 13 21.5
19.9
1.1/2 - 1 48.9
48.65		 34.05
33.80		 13 13 21.5
19.9
1.1/2 - 3/4 48.9
48.65		 27.30
27.05		 13 13 16.3
14.8
1.1/2 - 1/2 48.9
48.65		 21.95
21.70		 13 10 12.5
11
2 - 1.1/2 61.35
61.10		 48.9
48.65		 16 13 34.7
33.2
2 - 1 74.20
73.80		 34.05
33.80		 16 13 21.5
19.9
NPS Length Coupling Diameter Coupling
Q R
3/4 - 1/2 35 40.1
1 - 3/4 38.1 50
1 - 1/2 38.1 50
1.1/4 - 1 38.1 57.9
1.1/2 - 1 38.1 65
1.1/2 - 3/4 38.1 65
1.1/2 - 1/2 38.1 65
2 - 1.1/2 51.3 82
2 - 1 51.3 82

Genral Notes

  • Dimensions are in millimeters unless otherwise indicated.
  • Socket Bore (B1 / B2) - Maximum and Minimum dimensions.
  • Bore Diameter (D) - Maximum and Minimum dimensions.

Typical applications

  • Size transitions on small-bore lines
  • Instrument line reductions
  • Utility and drain piping
  • Skid interconnects

Frequently asked questions

What are Reducing Coupling?

Reducing 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 Reducing Coupling?

Choose Reducing 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.

Reducing Coupling Exported Countries

We Export Socket weld Reducing 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

Reducing Coupling Supplying in States and Cities

We Supply Socket weld Reducing 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 Reducing Coupling, Savoy Piping Inc., is committed to provide each and every customer with the highest standard of customer service. We deal in Reducing Coupling in India and Overseas, offering a wide range of Socket weld Reducing Coupling