tubing

The types of companys tubing include Grade J55 and Grade N80. 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.

The types of companys tubing include Grade J55 and Grade N80. Before manufacture,
the advanced