4" Fig 206 Butt Welded Pup Joint (M x F) – 1 FT | Sch XH Flowline Pipe

The 4" Figure 206 Butt Welded Pup Joint (1 FT) is an ultra-compact, heavy-duty medium-pressure flowline component engineered for the efficient, high-volume transport of utility fluids, abrasive drilling mud, and water in rugged oilfield environments. Featuring a large 4-inch internal bore and measuring exactly 1 foot in length, this highly specialized short pipe segment is absolutely essential for making precise micro-adjustments in large-capacity pipeline spacing, bridging extremely tight gaps between heavy equipment, and seamlessly connecting adjacent valves within confined, large-bore manifold spreads. Upgraded with Schedule XH (Extra Heavy) piping and rated for a reliable 2,000 PSI Cold Working Pressure (2M CWP), this unit offers vastly superior structural integrity and abrasion resistance compared to standard standard-weight pipes.

What differentiates this large-bore pup joint is its robust Butt Welded construction utilizing Schedule XH seamless carbon steel pipe, paired with the enhanced sealing capabilities of the Figure 206 hammer union. It is fabricated by taking thicker-walled Extra Heavy pipe and permanently joining it to forged steel Fig 206 union ends using high-penetration butt welds. The increased wall thickness of the Sch XH pipe significantly extends the service life of this compact joint by resisting severe internal erosion from high-volume abrasive slurries, while also offering enhanced resistance to external physical abuse commonly encountered in tight, highly trafficked rig floor spaces.

Configured with industry-standard Figure 206 Male (Wing) x Female (Thread) hammer union ends, this pup joint ensures rapid, tool-free rig-up using a standard lead hammer. Unlike standard metal-to-metal unions, the Figure 206 incorporates an elastomeric O-ring mounted in the male sub. This provides an essential secondary seal that works in conjunction with the primary precision-machined steel surfaces, ensuring bubble-tight containment even when dealing with slightly corrosive fluids or minor seating surface abrasions. Designed for demanding high-volume utility use in confined areas, this heavy-wall 1-foot welded pup joint delivers dependable, long-lasting performance for exact fluid routing operations.

Features & Benefits

• 2,000 PSI Pressure Rating: Engineered for medium-pressure fluid systems with a highly reliable 2,000 PSI Cold Working Pressure (2M) rating.

• Large 4-Inch Bore: Accommodates high flow rates and heavy abrasive mud slurries while minimizing flow turbulence and internal fluid friction.

• Figure 206 O-Ring Seal: Features a supplemental elastomeric O-ring in the male sub for superior, leak-free sealing compared to standard metal-to-metal only unions.

• Schedule XH Pipe (Extra Heavy): Built using thick-walled Sch XH seamless steel pipe, providing enhanced durability, superior abrasion resistance, and a longer operational lifespan than standard Sch 40.

• Ultra-Short 1-Foot Length: Provides the exact minimal reach required for precise spacing micro-adjustments and connecting large-bore manifold components that are in close physical proximity.

• Butt Welded Construction: Features full-penetration butt welds connecting the forged union ends to the thick-wall pipe body, ensuring a strong, permanent, and leak-free bond.

• Male (Wing) x Female (Thread) Connections: Features standard Fig 206 hammer union ends for fast, highly secure integration into existing medium-pressure iron networks.

Specifications & Technical Details

Applications

This upgraded 4" Figure 206 Butt Welded Pup Joint (1 FT) is a versatile, heavy-duty asset for operations requiring dependable, high-volume medium-pressure fluid routing in tight areas with added durability and sealing security. Typical applications include precise spacing alignments on large temporary water supply lines for well pads, compact high-capacity abrasive drilling mud circulation surface systems, heavy-duty short connections on large suction lines for transfer pumps, and general utility flowlines where extended component life and a secure 1-foot 2,000 PSI connection are required.

Quality Assurance

Each butt welded pup joint undergoes strict quality control protocols to ensure operational safety. This includes hydrostatic pressure testing to verify the integrity of the pipe and seals, complete dimensional verification, and rigorous non-destructive examination (NDE) such as Magnetic Particle Inspection (MPI) or ultrasonic testing on the structural butt welds.

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