Reducer
- Our pipe reducers are hot forged or hot extruded from premium carbon steel, alloy steel and stainless steel, with reliable pressure resistance and outstanding corrosion resistance. It covers concentric reducer and eccentric reducer. Precision CNC machining delivers smooth inner wall and stable flow transition. Strict full-process quality control ensures precise dimensions and stable mechanical performance. Widely applied in oil & gas, petrochemical, power, marine, water treatment and construction piping systems.
Certified:
All reducers are supplied with complete factory test reports including chemical composition, mechanical property, dimensional check, NDT and hydrostatic test. Products comply with ISO, ASTM, ASME, DIN, EN and JIS standards. Material mill certificates EN 10204 3.1 / 3.2, third-party inspection certificates and full shipping documents can be provided on request to achieve full quality traceability for global industrial buyers.
Application:
Reducers are essential diameter-transition fittings for all industrial piping systems, used to connect pipes of different calibers. In oil & gas transportation, they adjust pipe diameters under high temperature and pressure for crude oil and natural gas delivery. Petrochemical facilities adopt anti-corrosion reducers to connect pipelines between reactors, storage tanks and corrosive medium conveying pipelines.
Thermal and nuclear power plants use high-temperature resistant reducers for boiler circulation and steam pipeline diameter conversion to withstand long-term severe working conditions. Marine and offshore projects adopt seawater-resistant reducers for fuel, ballast and fire-fighting pipe size switching on vessels and platforms. Water treatment and desalination plants equip large-size reducers for pump and filter pipeline matching. In construction, reducers are widely installed in HVAC, fire protection and plumbing systems for convenient pipe layout and maintenance. Sanitary stainless steel reducers are used in food and pharmaceutical workshops to meet strict hygiene standards without medium contamination.
Specification:
1. Product Specification
Parameter | Detailed Specification |
Product Type | Concentric Reducer, Eccentric Reducer, Seamless Reducer, Welded Reducer |
Size Range | 1/2" – 60" (DN15 – DN1500), customized sizes available |
Pressure Rating | Class 150, 300, 600, 900, 1500, 2500 (PN20 – PN420) |
End Connection | BW Butt Weld, SW Socket Weld, NPT Threaded |
Manufacturing Process | Hot Extrusion, Hot Forging, Heat Treatment, CNC Machining |
Applicable Standards | ASME B16.9, ASME B16.28, MSS SP-75, DIN 2616, EN 10253, JIS B2313, GOST 17377, ISO 3419 |
Material Grades | Carbon Steel: A234 WPB, WP12, WP22 / Stainless Steel: 304, 304L, 316, 316L, 321, 904L / Alloy Steel: A234 WP5, WP9, WP11, WP91 |
2. Chemical Composition
Grade | C | Si | Mn | P | S | Cr | Ni | Mo |
A234 WPB | ≤0.30 | ≤0.35 | 0.29–1.06 | ≤0.035 | ≤0.035 | ≤0.40 | ≤0.40 | — |
WP11 | 0.05–0.15 | 0.50–1.00 | 0.30–0.60 | ≤0.030 | ≤0.030 | 1.00–1.50 | — | 0.44–0.65 |
WP22 | 0.05–0.15 | ≤0.50 | 0.30–0.60 | ≤0.030 | ≤0.030 | 2.00–2.50 | — | 0.87–1.13 |
304 | ≤0.08 | ≤0.75 | ≤2.00 | ≤0.045 | ≤0.030 | 18.0–20.0 | 8.00–10.5 | — |
304L | ≤0.03 | ≤0.75 | ≤2.00 | ≤0.045 | ≤0.030 | 18.0–20.0 | 8.00–12.0 | — |
316 | ≤0.08 | ≤0.75 | ≤2.00 | ≤0.045 | ≤0.030 | 16.0–18.0 | 10.0–14.0 | 2.00–3.00 |
316L | ≤0.03 | ≤0.75 | ≤2.00 | ≤0.045 | ≤0.030 | 16.0–18.0 | 10.0–14.0 | 2.00–3.00 |
Standard:
Classification | Grade | Applicable Standard | Key Chemical Composition (wt%) | Key Mechanical Properties (Room Temperature) |
Carbon Steel | A234 WPB | ASTM A234 | C≤0.30, Mn 0.29~1.06, S≤0.035, P≤0.035 | TS≥415MPa, YS≥205MPa, EL≥22%, H≤156HB |
Low Alloy Steel | WP11 | ASTM A234 | C 0.05~0.15, Cr 1.00~1.50, Mo 0.44~0.65 | TS≥415MPa, YS≥205MPa, EL≥20%, H≤163HB |
WP22 | ASTM A234 | C 0.05~0.15, Cr 2.00~2.50, Mo 0.87~1.13 | TS≥415MPa, YS≥205MPa, EL≥20%, H≤163HB | |
Austenitic Stainless Steel | 304 | ASTM A403 | C≤0.08, Cr 18.0~20.0, Ni 8.00~10.5 | TS≥520MPa, YS≥205MPa, EL≥35%, H≤90HRB |
304L | ASTM A403 | C≤0.03, Cr 18.0~20.0, Ni 8.00~12.0 | TS≥480MPa, YS≥170MPa, EL≥40%, H≤90HRB | |
316 | ASTM A403 | C≤0.08, Cr 16.0~18.0, Ni 10.0~14.0, Mo 2.00~3.00 | TS≥520MPa, YS≥205MPa, EL≥35%, H≤90HRB | |
316L | ASTM A403 | C≤0.03, Cr 16.0~18.0, Ni 10.0~14.0, Mo 2.00~3.00 | TS≥480MPa, YS≥170MPa, EL≥40%, H≤90HRB | |
321 | ASTM A403 | C≤0.08, Cr 17.0~19.0, Ni 9.00~12.0, Ti≥5×C | TS≥520MPa, YS≥205MPa, EL≥35%, H≤90HRB |
Process:
Packing:
