2-1/16" 5M x 2-3/8" 8RD EUE Companion Flange – Oil & Gas Flowline Fitting

The 2-1/16" 5M x 2-3/8" 8RD EUE Companion Flange is a critical transition component designed to securely connect flanged wellhead equipment to standard threaded tubing. Engineered for high-pressure upstream oil and gas operations, this companion flange allows operators to seamlessly adapt a 2-1/16" 5,000 PSI (5M) flanged interface to a 2-3/8" 8RD External Upset End (EUE) pipe connection.

Manufactured from premium forged alloy steel in accordance with strict API 6A specifications, this flange is built to handle the rigors of harsh field environments. The flanged face ensures a reliable, leak-free seal against mating API 6A equipment, while the precision-machined 8-round EUE threads provide a high-strength, vibration-resistant connection for flowline piping and tubing.

Ideal for wellhead assemblies, choke manifolds, and custom piping configurations, this high-pressure threaded companion flange offers a durable, field-ready solution for routing fluids safely and efficiently.

Features & Benefits

• Seamless Crossover Design: Safely transitions a standard 2-1/16" 5M API flange to a 2-3/8" 8RD EUE threaded piping system.

• 5,000 PSI Rating (5M): Engineered to contain high-pressure upstream environments without compromising structural integrity.

• Precision-Machined Threads: Features 2-3/8" 8-Round EUE internal threads for a secure, gas-tight makeup with standard oilfield tubing.

• Forged Alloy Steel Construction: Delivers exceptional durability and resistance against abrasive fluids and harsh weather conditions.

• API 6A Compliant: Built to recognized industry standards to ensure compatibility, safety, and operational reliability.

• Versatile Integration: Essential for adapting valves, BOPs, and manifold components to threaded flowlines.

Specifications & Technical Details

Applications

This 5M companion flange is highly suited for high-pressure upstream operations that require secure transitions between flanged assets and threaded tubing. Typical applications include wellhead assemblies, temporary flow-back piping, production flowlines, choke and kill manifolds, and interfacing high-pressure valves with standard 2-3/8" EUE pipework.

Quality Assurance

Each companion flange undergoes strict quality control protocols, including precision thread gauging, dimensional verification, and material traceability, ensuring compliance with API standards for dependable high-pressure field performance.

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