FMC Butt Welding 15000PSI FIG1502 Hammer Union Product Description Hammer union is mainly used in oil industry in high-pressure pipline connectio. Size have 1" to 5", work the pressure 7Mpa to140Mpa(1000psi-20000psi), the API 6A and 16C cetification, prevent H2S union according to the NACE standard MAr0175. Design features: 1.with self-lockubf type ACME thread design; 2. repd tightening and remove; 3. made by international standard, and can be interchangeable with imported parts; 4. Seal with high pressure resistance; 5.Using NC mechine tool processing Seiko degree is high; 6. Type, specification identifies die forging on the wing nut, identification and convenient;