... Application:oilfield equipment WP:High pressure API well head parts High-pressure union, importing international advanced technology, ... , tubing thread, butt-weld. Connections Type:Component Parts:Application: pipeline thread, tubing thread, butt-weld;Nut ... 6A products as following:1) Wellheads (casing/tubing head, crosses ,flange adapter,etc)2) Valve ( ... union, manifold,elbows), bop. API well head parts