TIANJIN BOYUTONG INTERNATIONAL TRADE CO., LTD.
We have 5 lines for spiral pipes and 2 lines for ERW pipes. The annual output is 150thousand tons of F219mm-F3000mm, thickness 5mm-25mm for SSAW/HSAW pipe. And 200 thousand tons of F42-F273MM, thickness 2-14MM for ERW pipes. We not only required the certificate of ISO9001:2008. But could produce according to API 5L/5CT, GB/T 9711.1, BS1387,EN10219.