Blind Flange, API 6BX 15K, Sour Service

The Blind Flange, API 6BX 15K, Sour Service is a blind flange (Blind (no bore)) rated for 15,000 psi working pressure in sour (nace mr0175) service. NACE MR0175 / ISO 15156 sour-service compliant — H₂S-rated body and trim with hardness controlled per the standard.

Construction

• Type: Blind Flange
• Series / class: 15K (15K)
• Configuration: Blind (no bore)
• End A: API 6BX 15K flanged (BX ring groove)
• Bore / ID: N/A — blind
• Material: Forged alloy steel (4130) — NACE MR0175 hardness controlled
• Temperature rating: -20°F to 180°F (-29°C to 82°C)

Available sizes

This product family covers the following stock or short-lead nominal sizes: 2-1/16 in, 3-1/16 in, 4-1/16 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 15,000 psi (15K class), sour (nace mr0175) rated. Manufactured to API 6A, material class EE. 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

• Sour-well 15K frac-tree top caps
• H₂S wellhead blinds
• NACE-compliant 15K test-tree termination

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):

• FMC 15K Sour Blind
• Cameron 15K NACE
• NOV Sour

Compliance

• API 6A
• Material class: EE
• NACE MR0175 / ISO 15156 (sour-service / H₂S)
• 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.