On this page 5 sections
Key features of pipe reducers
- Concentric and eccentric
- Butt-weld to ASME B16.9
- Swage nipples for small bore
- Wide range of size combinations
Pipe Reducers by material
Pipe Reducers are available in the following grades. Select a grade for specifications and sizes.
Stainless Steel
- SS 304 Pipe Reducers
- SS 304L Pipe Reducers
- SS 304H Pipe Reducers
- SS 309S Pipe Reducers
- SS 310S Pipe Reducers
- SS 316 Pipe Reducers
- SS 316L Pipe Reducers
- SS 316Ti Pipe Reducers
- SS 317 Pipe Reducers
- SS 317L Pipe Reducers
- SS 321 Pipe Reducers
- SS 321H Pipe Reducers
- SS 347 Pipe Reducers
- SS 347H Pipe Reducers
- SS 904L Pipe Reducers
- Duplex 2205 Pipe Reducers
- Super Duplex 2507 Pipe Reducers
- SS 254 SMO Pipe Reducers
Nickel Alloys
- Inconel 600 Pipe Reducers
- Inconel 601 Pipe Reducers
- Inconel 625 Pipe Reducers
- Incoloy 800 Pipe Reducers
- Incoloy 800H Pipe Reducers
- Incoloy 800HT Pipe Reducers
- Incoloy 825 Pipe Reducers
- Monel 400 Pipe Reducers
- Hastelloy C22 Pipe Reducers
- Hastelloy C276 Pipe Reducers
- Nickel 200 Pipe Reducers
- Nickel 201 Pipe Reducers
Carbon Steel
Alloy Steel
Non-Ferrous Metals
Pipe Reducers: sizes, finishes and testing
- Size range
- Butt-weld ½" – 48" (larger fabricated to order) in schedules matching the pipe; socket-weld and threaded ⅛" – 4" in Class 2000, 3000, 6000 and 9000
- Finish
- Annealed & pickled, shot-blasted, black painted or galvanised (by material)
- Ends
- Bevelled (butt-weld), socket-weld, threaded NPT/BSP
Testing & documents
- Chemical and mechanical tests of the starting material
- Dimensional inspection to B16.9 / B16.11
- Radiography of welded fittings (seamed WPW/WX)
- Hardness, IGC and impact tests as specified
- EN 10204 3.1 certificate; 3.2 with third-party inspection
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Other fittings types
Frequently asked questions
What sizes are pipe reducers available in?
Butt-weld ½" – 48" (larger fabricated to order) in schedules matching the pipe; socket-weld and threaded ⅛" – 4" in Class 2000, 3000, 6000 and 9000.
Which specifications cover pipe reducers?
Butt-weld to ASME B16.9.
What are pipe reducers used for?
Butt-weld to ASME B16.9. Eccentric reducers keep one side flat, which avoids air pockets at pump suction and allows drainage in pipe racks.
Which materials are pipe reducers available in?
Stainless steel, nickel alloys, carbon and alloy steel and non-ferrous metals, depending on the specification. See the material list above.