Tianjin LANG Steel Pipe Manufacturing Co., Ltd.( hereinafter referred to as XSP) which is a cold drawn working line, a general steel factory engaged in pipe manufacture, the R& D, design, manufacture....
Detail: OD 168.28 / 177.80 mm API 5L Gr.B Seamless Steel Pipe STC , LTC And BTC Specifications new produce API 5L Gr.B seamless steel pipe 1.made in china 2.ISO Standard 4.ASTM and API certificate....