... : Liaocheng Xinglong Seamless Tube Manufacturing Co.,LtdNameseamless steel pipe astm a 106 Brand nameXinglong (ourself)StandardAPI 5CT ,API 5L,ASTM A53 ... 2009.Production Equipment Liaocheng Xinglong Seamless Steel Tube Manufacturing Co, Ltd. has equipped 60, 90, 140 and 325 mill lines. Production ... -2008, GB8163-2008,GB3087-2008,GB5310-1995,GB6479-2000,ASTM A 53, A106, API 5L/5CT, DIN, JIS etc.greatly. ...