... Application:oilfield equipment 3.WP:High pressure Well head assembly(hammer union) High-pressure union, importing international advanced technology, ... thread, tubing thread, butt-weld and compress-seal. The type mainly consists of: 100#, 200#, 206#, 207#,211#, ... connections of pipeline thread, tubing thread, butt-weld. Connections Type:Component Parts:Application: pipeline thread, tubing thread, butt- ...