Hammer unions (Fig unions) are high-pressure pipe connectors for oil & gas drilling, well servicing and fluid transfer, enabling tool-free quick make-up and break-out with a leak-tight metal-to-metal seal. Fuzer manufactures forged AISI 4130 / 4140 steel Fig hammer unions in sizes 1"–12", threaded or butt-weld ends, rated up to 15,000 PSI CWP, built to API 6A and NACE MR-01-75 for standard and sour gas service.

Available Fig Models
WECO-style hammer unions across the full pressure range: Fig 206 (2,000 PSI), Fig 602 (6,000 PSI), Fig 1002 (up to 10,000 PSI) and Fig 1502 (15,000 PSI).

Technical Specifications

Key Features
- Forged from high-strength AISI 4130 / 4140 alloy steel for high pressure & vibration service
- Precision-machined parts for dependable metal-to-metal sealing
- Standard threaded / butt-weld ends; custom connections available
- NACE MR-01-75 compliant versions for H₂S sour gas environments
- Fully interchangeable with standard WECO hammer unionsManufactured to API RP 6A and NACE MR-01-75



