What Are the Different Methods for Duct Construction?

Construction of pipelines for oil, natural gas and solid slurry. Including pipeline route engineering, station warehouse engineering and pipeline auxiliary engineering. Pipeline engineering also includes supplies of equipment and equipment in a broad sense.

Pipeline engineering

Pipe body engineering

That is, the whole process of assembling and welding the pipes and fittings.

Pipe protection structure engineering

Including pipeline inner and outer wall anticorrosion, pipeline insulation layer and other projects. The common method for pipeline corrosion protection is coating corrosion protection plus cathodic protection.

Pipe crossing construction

Including the engineering of crossing railways and highways, the engineering of crossing rivers and canyons, the engineering of mountain tunnels, the engineering of crossing bad geological sites, etc.

Line auxiliary project

Including pipelines and valve facilities for reserved lines, emergency shut-off valve devices, pipeline exhaust or drainage facilities, pipeline line detection instruments, line protection and stable pipe structures, ground support pipeline structures, line signs and other projects. The construction procedure of pipeline line engineering is to make routing selection first, 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; then carry out geological, hydrological survey, and topographic surveys, and then design the route on this basis ; Construction according to design. The construction procedures for buried pipelines are line development, pre-processing of pipes (usually including welding two pipes into one pipe, removing rust from the pipes, and applying an anti-corrosion layer), trenching, transporting and laying pipes.

The main characteristics of pipeline engineering are:

Piping works include

Pipeline engineering (including crossing rivers, etc.) is the main part of the entire pipeline engineering construction. It has unique construction procedures and dedicated construction tools, such as trenchers, welding machines, insulation machines, pipe benders, pipe lifters, and pressure test equipment. The construction of marine pipelines requires the use of ditch ships, pipe laying ships and other special ships. In the special section of the line, new construction technology and equipment should be used, such as blasting technology for trenching, directional drilling machines used when crossing rivers, and excavators used in frozen ground. In order to meet the quality requirements of pipeline construction, many countries have developed national or instituted standards for pipeline engineering. The American Petroleum Institute's Standards (APIs) have been adopted by many countries.