Pipe Elbows: Specification, Types & Application
1. Product Introduction
steel Pipe elbow is a key pipe fitting used to change pipeline flow direction at 45°, 90°, 180° or custom angles in piping systems. Widely connected via welding, threading or flanged ends to straight pipes for industrial fluid conveyance.
Common Main Types
- 90° Elbow: Most common, right-angle pipeline turning
- 45° Elbow: Gentle turn for low flow resistance
- 180° Degree Pipe Elbows(Return Bend): U-shaped reverse pipeline turnaround
- Long Radius (LR) Elbow: R=1.5D, preferred for low pressure & smooth fluid flow
- Short Radius (SR) Elbow: R=1D, compact layout for limited installation space
2. Executive Standards
- ASME B16.9 (seamless & welded butt-weld elbows, inch size)
- EN 10253 / DIN 2605 (European metric standard)
- GB/T 12459, GB/T 13401 (Chinese national standard)
- MSS SP-75
3. Main Materials
Carbon Steel: A234 WPB, Q235, P245GH
Stainless Steel: A403 WP304 / 316L
Alloy Steel: WP11, WP22
Alloy & plastic customized material available
4. Size & Pressure Range
- Nominal Size: 1/2″ ~ 48″ (ASME), DN15 ~ DN1200 (EN/GB)
- Pressure Class: Class150~Class2500, PN6~PN160
End connection: Butt Weld(BW), Threaded(NPT/BSP), Socket Weld(SW), Flanged
5. Application Scope
- Oil & gas, petrochemical industry piping
- Water treatment, HVAC, fire protection pipeline
- Power plant, chemical corrosive medium delivery
- Food & pharmaceutical stainless steel pipeline
Our factory custom manufactures various steel pipe elbows per drawing & standard, welcome OEM & customized orders.