API 6A Companion Flange – 1-13/16" 15M (15,000 PSI) x 2" LP (Line Pipe Thread)

The 1-13/16" 15M x 2" LP Companion Flange is a high-integrity, heavy-duty forged steel crossover component engineered to connect extreme-pressure bolted API 6A systems directly to threaded piping infrastructure. Featuring a 15,000 PSI API flanged profile on one side and an internal 2" Line Pipe (LP) female thread on the other, this specialized companion flange serves as a robust, safe transition point on high-pressure wellheads, Christmas trees, and manifold systems.

In severe upstream environments, managing structural integrity at 15,000 PSI requires components built to the highest metallurgical standards. The 1-13/16" 15M flanged end utilizes an industry-standard Type 6BX heavy-walled design featuring a precision-machined Ring-Type Joint (RTJ) groove. This groove is specifically engineered to seat a high-pressure BX-style metal ring gasket (typically BX-151). When bolted to a mating wellhead component, it forms an impenetrable, metal-to-metal seal that resists deformation and grows tighter under extreme internal line pressures.

The opposite side features a precision-machined internal 2" LP (Line Pipe) female thread. This provides a secure, weld-free interface for standard threaded high-pressure piping, auxiliary sampling lines, or heavy-duty instrumentation layouts. Machined from a single block of premium forged alloy steel (typically AISI 4130), this integral component eliminates the need for separate welded subs or intermediate adapters, removing potential weak points from critical high-pressure lines.

Features & Benefits

• 15,000 PSI API 6A Rating: Built to withstand the immense pressures of upstream exploration, safely managing a 15,000 PSI (15M) working pressure on the flanged connection.

• Type 6BX RTJ Sealing Face: Features a precision-machined ring groove compatible with BX-151 metal ring gaskets, ensuring a fail-safe metal-to-metal barrier against severe blowouts.

• Integral 2" LP Threading: Outfitted with an internal 2-inch API Line Pipe female thread for fast, dependable, weld-free connection to threaded flowline assets.

• Solid Forged Construction: Machined from high-strength forged alloy steel to deliver exceptional resistance to mechanical shock, intense vibration, and cyclic pressure loading.

• Streamlined Crossover Action: Provides a clean, one-piece adapter layout that reduces total pipeline weight and footprint while maximizing containment security.

Specifications & Technical Details

Applications

This 1-13/16" 15M x 2" LP companion flange is a vital adapter for upstream surface production and testing arrays operating under extreme pressure. Typical applications include connecting 15,000 PSI wellhead gate valve or blowout preventer (BOP) ports to threaded piping, integrating heavy-duty pressure sensors and gauge lines, establishing auxiliary blowdown connections, and setting up secure testing loops on frac trees and choke manifolds.

Quality Assurance

All our API 6A companion flanges are manufactured from premium-grade forgings and subjected to rigorous non-destructive testing (NDT), including ultrasonic and magnetic particle inspections. The BX ring grooves and internal LP threads undergo exact dimensional layout and gauge checks to prevent sealing face tolerances from drifting. Each component is fully traceable back to its original heat lot, with full material test reports (MTRs) and API compliance verification available upon request.

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