Buried gas pipeline external corrosion coating layer PE composite structure, epoxy powder (FBE), coal tar enamel, coal tar epoxy and PE tape five. Layer PE composite structure, epoxy powder anticorrosion coating performance and, therefore, Europe and the United States of buried pipeline anti-corrosion coating. In China, the durable life, maintenance costs and overall economic factors considered, the general composite structure of the preferred three-layer PE anti-corrosion coating steel pipe.
Different corrosion corrosion quality and cost, different gas should be based on the protection of steel pipes at different pressures, different purposes and in which the different environments and transport, comprehensive consideration of the anti-corrosion and corrosion costs. In considering the economic rationality should pay attention to two points: (1) gas pipeline network construction the anticorrosive investment, (2) gas pipeline network running maintenance costs. The city gas pipeline networks in urban areas and put into operation, maintenance and overhaul difficulties and higher costs should be appropriate to increase investment in order to reduce routine maintenance workload of the pipeline put into operation.
Precision piling carbon steel pipe products are widely used in natural gas, petroleum, chemicals, electricity, heat, water supply and drainage, steam heating, hydropower pressure steel pipe, thermal power, water and other long-distance pipelines and piling, bridges,structural steel pipe and other engineering fields.
Precision piling carbon steel pipe products are widely used in natural gas, petroleum, chemicals, electricity, heat, water supply and drainage, steam heating, hydropower pressure steel pipe, thermal power, water and other long-distance pipelines and piling, bridges,structural steel pipe and other engineering fields.
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