弯接头 toggle joint ; bending sub ; elbow connection

弯接管 bend connector

大斜度弯接头 high-deflection bent sub

遥控弯接头 remote-controlled bent sub

水力弯接头 hydraulic bent sub

井下可控弯接头 downhole controllable-angle bent sub

球面弯接头 ball elbow

钢弯接 Steel Bending Access

遥控定向可调式弯接头 tele-orientation adjustable bent sub