TP-JC saw-tooth type of tubing has been successfully string down to the oil well

A new type of non-API thread, the saw-tooth type of tubing (TP-JC), has been developed by TPCO’s R&D Center, the trial order with the steel grade of TP110S and the dimension of 88.9mmx6.45mm has been successfully put into usage in domestic oil well. This connection gets a great improvement on the strength compared with API’s round connection.