Elbow
- Our pipe elbows are hot forged or hot bent from premium carbon steel, alloy steel and stainless steel, with outstanding pressure and corrosion resistance. Available in 45°, 90°, 180° long/short radius types. Precision CNC machining ensures smooth inner surface and seamless flow. Strict full-process quality control guarantees accurate dimensions and stable mechanical performance. Widely applied in oil & gas, petrochemical, power, marine, water treatment and construction piping systems.
Certified:
All elbows are equipped with complete factory test reports covering chemical composition, mechanical properties, dimensional inspection, NDT and hydrostatic testing. 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 realize full quality traceability for global industrial buyers.
Application:
Elbows are essential directional pipe fittings for all pipeline systems across multiple industries. In oil & gas transmission, they change pipe direction under high temperature and pressure to transport crude oil and natural gas safely. Petrochemical plants adopt anti-corrosion elbows to connect reactors, storage tanks and chemical pipelines carrying acidic and alkaline media.
Thermal and nuclear power stations use high-temperature resistant elbows for boiler circulation and steam delivery pipelines to withstand long-term extreme working conditions. Marine and offshore engineering utilizes seawater corrosion resistant elbows for fuel, ballast and fire-fighting pipelines on vessels and platforms. Water treatment and desalination projects match large size elbows for pump and filtration pipe layout. In construction, elbows are widely used in HVAC, fire protection and plumbing systems for easy later maintenance.
Sanitary stainless steel elbows are used in food and pharmaceutical production lines to meet high hygiene standards without medium contamination.
Specification:
1. Product Specification
Parameter | Detailed Specification |
Product Type | 90° Elbow, 45° Elbow, 180° Return Bend, Long Radius LR, Short Radius SR, Seamless Elbow, Welded Elbow |
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 Bending, Hot Forging, Heat Treatment, CNC Machining |
Applicable Standards | ASME B16.9, ASME B16.28, MSS SP-75, DIN 2605, EN 10253, JIS B2311, GOST 17375, 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≥35%, 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≥35%, H≤90HRB |
Process:
Packing:
