API 6A Companion Flange – 2-1/16" 5M (5,000 PSI) x 2" LP (Line Pipe Thread)

The 2-1/16" 5M x 2" LP Companion Flange is a highly reliable, heavy-duty forged steel crossover component engineered to connect standard 5,000 PSI bolted API 6A systems directly to threaded piping infrastructure. Featuring a 5,000 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, secure transition point on surface wellheads, Christmas trees, and production manifold systems.

In demanding upstream environments, managing structural integrity requires components built to rigorous metallurgical standards. The 2-1/16" 5M flanged end utilizes an industry-standard API 6A design featuring a precision-machined Ring-Type Joint (RTJ) groove. This groove is specifically engineered to seat a standard R-24 or RX-24 metal ring gasket. When bolted to a mating wellhead component, it forms a tight, metal-to-metal seal that resists deformation and safely contains continuous internal line pressures up to 5,000 PSI.

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

Features & Benefits

• 5,000 PSI API 6A Rating: Built to safely manage standard upstream production pressures, accommodating a continuous 5,000 PSI (5M) working pressure on the flanged connection.

• RTJ Sealing Face: Features a precision-machined ring groove compatible with standard R-24 and RX-24 metal ring gaskets, ensuring a fail-safe metal-to-metal barrier against leaks.

• 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 and instrumentation.

• Solid Forged Construction: Machined from high-strength forged alloy steel to deliver exceptional resistance to mechanical shock, vibration, and pipeline stress.

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

Specifications & Technical Details

Applications

This 2-1/16" 5M x 2" LP companion flange is a vital adapter for upstream surface production and testing arrays operating under standard pressures. Typical applications include connecting 5,000 PSI wellhead gate valve ports to threaded production piping, integrating heavy-duty pressure sensors and gauge lines, establishing auxiliary blowdown connections, and setting up secure sampling loops on 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 magnetic particle and ultrasonic inspections. The 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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