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      Pipeline line auxiliary branch line, pipeline valve facilities of reserved line, emergency truncation valve device, pipeline exhaust and live drainage facilities, pipeline line detection instrument, line protection and hidden pipe structure buildings, support structure of ground pipeline erection, line signs and other projects. The construction procedure of pipeline line engineering is advanced route selection, that is, to determine the basic direction of the pipeline from the starting point to the end point. That is to determine the plane position of the pipeline, and then geological, hydrological investigation and topographic survey work, on the basis of the line design, according to the design of trial work, buried pipeline construction procedures for line development, pipe preprocessing (welding of two pipes, pipe rust removal, anti-corrosion layer), trenching, pipe transport and pipe distribution. Elbow and assembly, welding, quality inspection,
Pressure test, lower ditch, backfill, restore landform, set signs, etc
Pipeline line engineering (including crossing the river, etc.) is the main part of the whole construction, it has a unique construction procedure and special construction machines, such as excavators, welding machines, insulation machines, pipe bending machines, pipe lifting machines and pressure test equipment, in the special section of the line, but also the use of new construction technology and equipment.