... 1)connection: pipeline thread, tubing thread, butt-weld; 2)sour service models to NACE MR-01-75 The API oil hammer union ... Pressure Rating:1000psi cwp;1500 psi test; Connections Type: pipeline thread, tubing thread, butt-weld; Component Parts: Nut, Male Sub, Female ... Rating: 15000psi cwp;22500 psi test; Connections Type: pipeline thread, tubing thread, butt-weld; Component Parts: Nut, Male Sub, Female ...