IBR Approved · Buttweld Fittings
Buttweld Pipe Elbow Manufacturer
90°, 45° and 180° long-radius and short-radius elbows to ASME B16.9 / B16.28 — in carbon, alloy, stainless and duplex steel. 1/2" to 48" NB, SCH 20 to XXS. IBR approved with Form III-C, EN 10204 3.1 / 3.2 traceable.
Overview
Buttweld elbows change the direction of a pipe run and are the most common of all pipe fittings. We manufacture them by hot and cold forming from seamless and welded pipe, followed by heat treatment, calibration and NDT to meet ASME B16.9 (and B16.28 for short-radius) dimensional and tolerance requirements.
Every elbow is produced to the applicable material specification with full traceability, supplied with EN 10204 3.1 or 3.2 test certificates and, for boiler and steam service, IBR Form III-C certification.
Elbow Types & Standards
| Type | Radius | Standard | Typical Use |
|---|---|---|---|
| 90° Long Radius | 1.5D | ASME B16.9 | Default direction change, low pressure drop |
| 90° Short Radius | 1.0D | ASME B16.28 | Space-restricted layouts |
| 45° Elbow | 1.5D | ASME B16.9 | Shallow direction changes |
| 180° Return LR | 1.5D | ASME B16.9 | U-turns, heater & boiler coils |
| 180° Return SR | 1.0D | ASME B16.28 | Compact return bends |
Available Material Grades
Buttweld elbows are supplied in our full material range. Click a grade for full specification, chemistry and mechanical data:
Technical Specifications
| Parameter | Range |
|---|---|
| Size range | 1/2" to 48" NB (larger on enquiry) |
| Schedules | SCH 20, STD, XS, SCH 80, SCH 160, XXS |
| Dimensional standard | ASME B16.9 (LR), ASME B16.28 (SR) |
| End preparation | Bevel end per ASME B16.25 |
| Certification | EN 10204 3.1 / 3.2 · IBR Form III-C |
| Testing | PMI, dimensional, DP / RT as specified |