90° Long Radius Elbow 1.5D
The most common 90° elbow in industrial piping: a bend radius of 1.5 times the nominal size, seamless, in A234 WPB steel to ASME B16.9.
Long-radius (LR) 1.5D 90° elbow for butt-welded piping systems. Cold-formed from seamless pipe in A234 WPB to ASME B16.9, wall thickness STD or XS, painted finish.
- Angle
- 90°
- Bend radius
- 1.5D
- Size range
- Ø 21.3 to 323.8 mm
- Wall thickness
- STD, XS
- Steel grade
- A234WPB
- Standard
- ASME B16.9
- Manufacturing
- Seamless
- Finish
- Painted
- Catalog references
- 28
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The standard elbow for pressure piping
The 1.5D long radius (LR) elbow is the default choice on most process, water, gas and steam lines. Its bend radius of 1.5 times the nominal pipe size is a good balance between space and pressure drop: the flow turns smoothly while the fitting stays compact.
Our 90° 1.5D elbows are cold-formed from seamless A234 WPB pipe, with ASME B16.9 dimensions. They come in STD wall (schedule 40 on most sizes) and XS wall (schedule 80), painted, with bevelled ends ready for welding.
For the lowest possible pressure drop, or for an S235 line to the European standard, see the 90° 3D elbow.
Technical data
Sizes, grades, wall thicknesses and finishes come straight from our catalog of orderable references.
Steel grades
Wall thicknesses
Coating and finish
Certificates
EN 10204 3.1 inspection certificate with every shipment. NDT, hardness and hydrostatic test reports on request.
28 references available
Every orderable reference of this product type, with its full designation. Open a reference for its technical page and compatible fittings.
Need a non-standard size or wall thickness? Send us your drawing →
Industries
Petroleum & Oil
Natural Gas
Chemical Engineering
Power Generation
Shipbuilding
Water Distribution
Nuclear Energy
Waste Disposal
Manufacturing standards
Made to the following dimensional and material standards. Inspection certificate to EN 10204.
ASME B16.9
Factory-made wrought butt-welding fittings. North-American reference for dimensions and tolerances.
Frequently asked questions
What does “1.5D” mean on an elbow?
It is the bend radius, measured at the centreline: 1.5 times the nominal pipe size. This is the long radius (LR) elbow. A short radius (1D) elbow is more compact but causes more pressure drop.
Should I choose STD or XS wall thickness?
Match the wall thickness of the pipe the elbow is welded to. STD equals schedule 40 up to NPS 10, XS equals schedule 80 up to NPS 8. If in doubt, give the pipe specification in your quote request and we will check it.
Do the elbows come with a certificate?
Yes. Every shipment comes with an EN 10204 3.1 inspection certificate, and the heat number is marked on each fitting.
