3" ANSI 600# x 3" Fig 1502 Female Thread Flange Adapter, Butt Welded Sch XH – Oil & Gas Flowline Fitting

The 3" ANSI 600# x 3" Fig 1502 Female Thread Flange Adapter is a highly robust crossover component designed to seamlessly connect standard facility piping with high-pressure temporary flowlines. Engineered for reliable fluid transfer in upstream and midstream oil and gas operations, this adapter bridges a permanent 3-inch ANSI Class 600 flanged connection to a standard 3-inch Figure 1502 female hammer union interface.

Unlike single-piece forged adapters, this crossover utilizes a heavy-duty butt-welded construction featuring Schedule XH (Extra Heavy) wall thickness. The thick-walled Schedule XH tubing provides superior erosion resistance, structural rigidity, and longevity when handling abrasive fluids, high-velocity flows, and severe field vibrations. The butt-weld integration ensures a smooth internal flow bore, minimizing turbulence and pressure drops across the transition.

Serving as a critical interface between permanent facility infrastructure and temporary testing or pumping equipment, this welded flange adapter optimizes layout flexibility while maintaining rigorous structural safety across fluid transfer, well testing, and pipeline tie-in operations. (Note: Maximum working pressure of the assembly is governed by the ANSI Class 600 flange rating).

Features & Benefits

• Seamless System Integration: Effectively bridges standard ANSI Class 600 flanged facility piping with Figure 1502 temporary iron flowlines.

• Butt-Welded Construction: Features a high-integrity, full-penetration butt weld that ensures a smooth internal transition and exceptional structural strength.

• Schedule XH Wall Thickness: Constructed with Extra Heavy (XH) piping to provide superior resistance against internal wear, abrasion, and high-velocity flow degradation.

• Precision-Machined 1502 Thread: The 3-inch female union end ensures secure, vibration-resistant engagement with standard male hammer union components.

• Industrial Durability: Manufactured from high-quality steel to withstand harsh weather, mechanical impacts, and demanding operational environments.

• Optimized Flow: The matched bore and welded design reduce flow turbulence and minimize the risk of localized erosion.

Specifications & Technical Details

Applications

This Butt-Welded Sch XH flange adapter is essential for operations requiring a secure and durable transition between permanent facility piping and temporary flowline equipment. Typical applications include midstream pipeline tie-ins, surface well testing flowlines, connecting pump discharge lines to existing facility headers, fluid transfer stations, and custom heavy-duty manifold assemblies.

Quality Assurance

Each butt-welded crossover adapter undergoes stringent quality control protocols. This includes rigorous Non-Destructive Testing (NDT) on all welds (such as X-ray or dye penetrant inspection), dimensional verification, precise thread gauging, and material traceability, ensuring safe, leak-free, and reliable field performance.

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