Companion Flange, API 6BX 5K, Standard Service

The Companion Flange, API 6BX 5K, Standard Service is a companion flange (Threaded × API 6BX flange) rated for 5,000 psi working pressure in standard service. Standard service rated for clean hydrocarbon, completion fluid, and water-cut streams.

Construction

• Type: Companion Flange
• Series / class: 5K (5K)
• Configuration: Threaded × API 6BX flange
• End A: API 6BX 5K flanged (BX ring groove)
• End B: NPT or LP threaded (per request)
• Bore / ID: Matches the threaded end
• Material: Forged alloy steel (4130/4140), tempered
• Temperature rating: -20°F to 250°F (-29°C to 121°C)

Available sizes

This product family covers the following stock or short-lead nominal sizes: 2-1/16 in, 3-1/16 in. Other sizes within the same series and pressure class can be sourced from the OEM mill on a build-to-order basis (8–14 weeks lead). Indus quotes a firm size, pressure class, configuration, and service-class match against your inquiry data sheet — call or RFQ with the line specification and we will return a complete matched bill of materials.

Performance

Working pressure 5,000 psi (5K class), standard rated. Manufactured to API 6A, material class AA. Hydrostatic test at 1.5× shell pressure on every unit. Mill test reports per EN 10204 3.1 / 3.2 supplied with each shipment.

Applications

• Threaded-to-flanged wellhead transitions
• Choke-line tie-ins
• Production-tree side-outs

OEM equivalents and compatibility

This product is supplied as a recognised matched-pressure interchange for the following OEM standards and product lines (no implied authorised-distributor relationship — supplied by Indus Hydraulics):

• Cameron 5K Companion
• FMC 5K
• Stream-Flo 5K

Compliance

• API 6A
• Material class: AA
• EN 10204 3.1 / 3.2 mill test reports
• Hydrostatic test certificates per unit

How to order

Confirm on your RFQ: (a) exact nominal size and bore ID, (b) line working pressure and pressure class, (c) end-connection style and gender on each port (M / F, NPT / BW / Integral / RTJ / RF), (d) service class — sour (NACE MR0175) or standard, (e) any additional ports or taps (1/2 in NPT instrument tap, 9/16 in Autoclave, etc.), and (f) required certifications beyond the standard MTR + hydrostatic. Indus quotes ex-Dubai with full traceability.

Companion products

Pair with matched-pressure hammer unions, swivel joints (Chiksan-style 50 / 100 / 200 series), pup joints, integral crosses / tees / elbows, plug valves, ball valves, and check valves of the same WECO figure class. For wellhead and frac-tree integration, also specify API 6A flanges, wellhead adapters, and ring-joint gaskets in the matched pressure class.