– Reducing the duration of construction – to reduce the cost of construction – reducing operational costs – high operational reliability of gas pipelines under construction. Frank Armijo spoke with conviction. Shortening and reducing the cost of construction is achieved through: – reducing the cost of transportation of pipes – pipes to reduce the cost by choosing the optimum thickness of the walls – the absence of costs for anti-corrosion pipe insulation and a device for electrochemical protection of gas pipelines – to reduce the cost of welding by the use of long tubes in coils or on reels – reduce the volume of earthwork by welding pipes to the curb trenches and the subsequent laying them on the bottom of the trench of minimum width, but sufficient to perform the required bending and compacting the soil before backfilling the pipeline – the use of special equipment for the trenchless strips of plastic pipelines (by plowing or horizontal drilling). Reducing operational costs is achieved through: – reducing the amount of servicing pipelines – no cost to pay for electricity in an electrochemical protection of pipelines against corrosion. Operational reliability of polyethylene gas pipelines in the design stage and construction is achieved by: – matching selected pipe material maximum working pressure of gas at a certain respect the nominal outer diameter of the pipe to the nominal wall thickness, taking into account safety factor – the rational choice ways to connect pipes necessary fittings (fittings) and compounds of polyethylene pipes with steel – the full range of construction works in strict accordance with the requirements of instructions of manufacturers of equipment and products, production procedures..