New underground and overground PΝG piping constructed of polyethylene HDPE piping with Electrical Couplings (EF fittings) and TIG welded carbon steel seamless piping in accordance of API 5L (A106) GR.B ANSI B36.10 SCH40 with carbon steel forged fittings according to ANSI / ASME B16.11, ASTM A-105, 3000 lb, for the supply of the factory’s furnaces and various consumptions with a total power of 1.5MW