... Pipe with High Quality 1.WT:4-70mm OD:25-370mm 2.Certification:API 3.Professional manufacturer ASTM A106 GR.B Carbon Steel Pipe ... resistant,Low temperature-resistant, corrosion-resistant Seamless pipe for Petroleum, chemical, electric power,Boiler industry16 ... seamless pipe10-530×1.5-36 high-pressure seamless pipe for chemical fertilizer equipment 20,16Mn, ... A106 GR.B Carbon Steel Pipe with High Quality