Crossover Adapter – 2" FIG 1502 Female (Thread) x 4" FIG 602 Male (Wing) | Fabricated Buttweld XXH

The Fabricated Crossover Adapter, 2" FIG 1502 Female (Thread) x 4" FIG 602 Male (Wing) featuring a Buttweld XXH construction, is a heavy-duty flowline component designed to bridge significant gaps in both pipe diameter and pressure ratings. This specialized adapter allows field operators to transition safely and efficiently from high-pressure 2-inch 15,000 PSI (FIG 1502) flowlines up to larger capacity 4-inch 6,000 PSI (FIG 602) medium-pressure piping systems.

Unlike standard single-piece forged crossovers, this unit utilizes a Fabricated Buttweld construction to accommodate the large jump in pipe sizes. The crossover is expertly welded using XXH (Double Extra Heavy) wall thickness seamless pipe. This ultra-thick schedule ensures maximum structural integrity, superior erosion resistance, and reliable pressure containment at the weld joints, making it highly durable against heavy vibration and fluid surge.

The 2" FIG 1502 end features a precision-machined female thread (sub) connection, while the 4" FIG 602 end includes a massive male wing configuration complete with a heavy-duty wingnut for fast, hammer-up installation.

Note: While the 2" FIG 1502 connection is nominally rated for 15,000 PSI, the overall working pressure of this crossover assembly is strictly limited by the 4" FIG 602 connection, resulting in a maximum system pressure rating of 6,000 PSI (6K CWP).

Features & Benefits

• Fabricated Buttweld XXH Construction: Built using Double Extra Heavy (XXH) seamless pipe, providing massive structural strength and superior weld integrity for transitioning between drastically different pipe sizes.

• Large-Scale Transition: Safely steps up from a 2-inch high-pressure line to a 4-inch medium-pressure line, offering crucial flexibility for custom manifold layouts and mud systems.

• Reduced Leak Paths: Eliminates the need to stack multiple forged swages to achieve a 2" to 4" transition, thereby drastically reducing potential failure points.

• Fast Installation: The 4" FIG 602 male end includes a heavy-duty wingnut, allowing for rapid, secure makeup and breakout using standard rig hammers.

• Reliable Sealing: Precision-machined seating surfaces ensure compatible elastomeric seals seat perfectly for a bubble-tight, leak-free connection.

Specifications & Technical Details

Applications

This fabricated 2-inch to 4-inch crossover adapter is widely used in medium-to-high pressure surface operations where a drastic transition in pipe diameter is required. Typical applications include mud circulating systems, high-volume fluid transfers, cementing lines, standard flowback operations, and general manifold tie-ins where 2" 15K equipment must safely feed into high-capacity 4" 6K equipment.

Quality Assurance

All our fabricated buttweld crossovers undergo stringent quality control and Non-Destructive Testing (NDT). Weld joints are subjected to 100% radiographic (X-ray) or ultrasonic inspection to ensure zero defects and complete weld penetration. Each fitting undergoes rigorous hydrostatic pressure testing prior to shipment to guarantee absolute safety, shell integrity, and seal performance under working loads. Full material traceability is available to ensure API compliance.

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