IBR Approved · Buttweld Fittings
Buttweld Pipe Tee Manufacturer
Equal tees, reducing tees and barred tees to ASME B16.9 — 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 tees provide a 90° branch connection in a pipe run. As single forged and formed components made to ASME B16.9, they are stronger and cleaner than a fabricated set-on branch, with no reinforcing pad required. We produce equal tees, reducing tees and barred (scraper) tees for piggable lines.
Every tee 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.
Tee Types & Standards
| Type | Branch | Standard | Typical Use |
|---|---|---|---|
| Equal (Straight) Tee | Same as run | ASME B16.9 | Full-size branch takeoff |
| Reducing Tee | Smaller than run | ASME B16.9 | Reduced branch (e.g. 6×6×4) |
| Barred / Scraper Tee | Equal or reducing | ASME B16.9 | Piggable pipelines |
| Cross (4-way) | Equal or reducing | ASME B16.9 (MSS SP-75) | Dual branch connections |
Available Material Grades
Buttweld tees 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 (MSS SP-75 for large OD) |
| 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 |