special oil pipe connecting device-j9九游国际真人

          a special oil pipe connecting device relates to the connecting technology of oil pipes of oil fields. according to the special oil pipe connecting device, internal threads are arranged at the two ends of a coupling, a reinforcing platform is arranged in the middle of the coupling, the diameter of the outer walls of the two ends of the coupling is 80 mm, the length of the coupling is 180 mm, the length of the reinforcing platform is 40 mm, and the diameter of an inner hole of the reinforcing platform is 62 mm. the special oil pipe connecting device can meet using requirements of some special oil wells, the sealing effect is good, and connection is firm