API 6A Weld Neck Flange 5000 PSI
API 6A weld neck flange for 5,000 PSI wellhead and flowline service — A105, LF2 and F52 materials, sizes 1 in to 26 in, RF, RTJ and BX facings.
API Standard Flanges · On Request
API Companion Flange
Companion flanges connect threaded pipe and tubing directly to flanged wellhead, valve and pipeline equipment — no welding needed at the joint. We source API 6A and ASME B16.5 companion flanges in carbon steel A105 and low-temperature LF2, with NPT or line-pipe threads and RF or RTJ facings, in standard and custom-machined configurations. Every flange is supplied with material certification on request. Share your thread size, pressure rating and facing and we will quote the correct companion flange for your connection.
Technical Specifications
| Standard | API 6A / ASME B16.5 |
|---|---|
| Type | Companion flange, threaded bore |
| Size Range | 2-1/16 in to 21-1/4 in (API) · NPS 1/2 to 24 (ASME) |
| Pressure Rating | 2,000 to 15,000 PSI · Class 150 to 2500 |
| Materials | ASTM A105, A350 LF2, A182 F304 / F316 |
| Facing | RF (raised face) / RTJ (ring type joint) |
| Thread | NPT / API line pipe, as required |
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