Casing

 have set up casing producing assembly line, including material testing and
                                   monitoring, magaflux, digital control machine and automatically heat-treat equipment
                                   etc. Then products standards meet API 5CT requirement. We can product all kinds
                                   of casing and coupling rang form 4 to 9 5/8. Before manufacture, the advanced
                                   spectrometer is applied for conducting material analysis. In the course of calcinations,
                                   the infrared thermometer is used to monitor the heating temperature.

                                   The following steps of tempering, thread processing, detecting surface, pressure
                                   testing and auto-spray painting are completely in accordance with Quality Control System.
                                   So our tubing products hold the firm position in class of tip-top quality.

have set up casing producing assembly line, including material testing and
monitoring