180 Degree Pipe Elbows
1. Product Overview
180° pipe elbows (also called return bends) are U-shaped pipe fittings designed to reverse fluid flow direction by 180° in piping circuits, commonly used for heat exchangers, tank circulation and compact pipeline layout.
2. Main Classification
- Long Radius 180° Elbow (LR, R=1.5D)：Most popular, low flow resistance, standard engineering option
- Short Radius 180° Elbow (SR, R=1D)：Compact size for narrow installation space
3. Executive Standards
- ASME B16.9
- EN 10253
- GB/T 12459, GB/T 13401
- MSS SP-75
4. Available Materials
- Carbon steel: A234 WPB, P245GH, Q235B
- Stainless steel: A403 WP304, WP316L
- Alloy steel: A234 WP11, WP22
5. Technical Parameters
- Size: 1/2″~48″, DN15~DN1200
- Connection end: Butt Weld (BW), Socket Weld, Threaded
- Pressure grade: Class150~Class2500 / PN10~PN160
6. Application
Heat exchange system, boiler pipeline, water circulation, petrochemical, HVAC, power station piping.
Custom sizes & special material 180° elbows available per your drawings.