API CASING COUPLING13-3/8 BC SC N80 PIPE

Product description Casing coupling Casing coupling is for the dimensions more than 4 1/2 inch. Differently than tubing coupling is, casing coupling normally does not need to be thickened (Non-upset), which means no upset casing coupling, so it has following types: Round thread  • LTC/LC: Long round thread casing coupling              • STC/SC: Short round thread casing coupling Buttress thread • BTC/BC: Buttress thread casing coupling All three types has same thickness of the casing pipe body, just have different lengths. The oil casing coupling is a necessary piece used to connect the two casing. The coupling manufacturing method is the same as seamless pipe. The steel pipe ends with internal thread to connect with the upper and lower casing. In order to ensure the joint tightness, the precision of screw thread is strictly required.…