... api certified fty sale oilfield wellhead equipped with gate valve,drilling choke,tubing head,casing head,cross and flangeNB:2-9/16 ... consists of caing head, casing spool,tubing spool,tubing head adapter,studded cross, gate valve,choke valve and the tree cap. All wellhead ... and life ! B.rgdsDavis oilfield wellhead equipped with gate valve,drilling choke,tubing head,casing head,cross and flange