Circulation Head 20" BTC Pin x 2" Fig 1502 Hammer Union

Circulation Head 20" BTC Pin x 2" Fig 1502 Hammer Union
The circulation head (circulation sub) is manufactured by integral forging of petroleum machinery pipes,which is divided into drill pipe circulation head,union Circulation Sub and casing circulation head.
The Circulating Subs materials are AISI4130, AISI4140, AISI 4145H, N80, L80, P110, etc.The thread connection is available NPT,LPT,FIG 1502 hammer union,API BTC,LTC,STC,premium thread.drill pipe tool joint IF,REG,XT55 etc.
The upper part of the casing circulation head is a drill pipe box connection or FIG 1502 union thread or LPT thread,NPT thread, and the other end is a casing Pin thread with a hollow cross-section conversion joint.