1:Suitable medium:crude oil,water,nature gas 2.bottom connection:welded, slips , threaded 3.AA-FF,PSL1-3,PR1 CASING HEAD Casing hanger for casing head and casing spool has straight type seat bore and 45°cone of hanging shoulder with fine loading ability. If required,it can be designed into integral or split structure. The connecting type of casing head and surface casing is weld,tread and slip ...