2" Fig 1502 Integral Pup Joint (M x F) – 10 FT | Sour Service (H2S) Flowline Pipe

The 2" Figure 1502 Integral Pup Joint (10 FT) for Sour Service is a highly specialized, extreme-duty flowline component engineered specifically for the safe transport of high-velocity, toxic, and abrasive fluids in environments containing Hydrogen Sulfide (H2S). Measuring 10 feet in length, this extended-reach straight pipe segment is essential for safely bridging gaps between flowback equipment and wellheads in hazardous conditions. To comply with strict industry safety standards for sour gas environments (NACE MR0175 / ISO 15156), this Figure 1502 component is explicitly derated to a highly secure 10,000 PSI Cold Working Pressure (CWP).

What makes this pup joint critical for H2S applications is its specialized metallurgical profile and Integral construction. The entire 10-foot joint is precision-machined from a single, solid billet of premium forged alloy steel that has undergone rigorous, specialized heat treatment. This ensures the metal maintains a strictly controlled hardness level to effectively resist Sulfide Stress Cracking (SSC) and Hydrogen-Induced Cracking (HIC)—catastrophic failures common in sour environments. Furthermore, the seamless, weld-free design completely eliminates the risk of weld-seam fatigue and heat-affected zone vulnerabilities under extreme pressure pulsations.

Configured with industry-standard Figure 1502 Male x Female (M x F) hammer union ends, this pup joint ensures rapid, tool-free rig-up. The Female end houses a specialized, H2S-resistant replaceable lip-type elastomeric seal (typically Viton or highly saturated nitrile), providing a bubble-tight primary barrier that protects the secondary metal-to-metal seating surfaces. Designed for maximum safety and longevity, this integral pup joint delivers unparalleled structural integrity and pressure containment for the world's most hazardous well servicing operations.

Features & Benefits

• 10,000 PSI Sour Service Rating: Explicitly derated to 10,000 PSI Cold Working Pressure to safely manage extreme high-pressure fluid systems containing toxic H2S gas.

• NACE MR0175 Compliant: Manufactured and strictly heat-treated to meet or exceed NACE MR0175 / ISO 15156 standards for resistance against Sulfide Stress Cracking (SSC).

• 100% Integral Construction: Machined from a single solid piece of forged alloy steel, completely eliminating weld joints for maximum structural rigidity and fatigue resistance.

• 10-Foot Length: Provides extended reach for safely spanning longer distances between manifolds and wellheads, reducing the number of connections in hazardous zones.

• H2S-Resistant Sealing: Utilizes precision-machined metal-to-metal seats combined with a specialized, chemically resilient elastomeric seal engineered to withstand corrosive sour gases.

• Male x Female (M x F) Connections: Features standard Fig 1502 hammer union ends for fast, seamless, and highly secure integration into existing sour service iron spreads.

Specifications & Technical Details

Applications

This extreme-pressure 2" Figure 1502 Sour Service Integral Pup Joint is a strictly required asset for upstream operations where Hydrogen Sulfide (H2S) is present. Typical applications include the construction of severe-service sour gas well testing spreads, high-pressure flowback operations in toxic environments, choke-and-kill manifold tie-ins, and any critical fluid routing where a secure, NACE-compliant 10,000 PSI connection is mandated for personnel and environmental safety.

Quality Assurance

Each sour service integral pup joint undergoes the most rigorous quality control protocols in the industry. This includes severe hydrostatic pressure testing, complete dimensional verification, ultrasonic thickness (UT) testing, magnetic particle inspection (MPI), and vital hardness testing to ensure strict NACE compliance. Full material traceability (MTRs) is provided to guarantee fail-safe structural integrity in hazardous H2S conditions.

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