Pipeline coating, application thereof and pipeline coated with same

Abstract

The invention relates to pipeline coating comprising an asphalt composition. The pipeline coating comprises, by weight, 30-80% of asphalt, 10-30% of butadiene styrene rubber, 1-20% of glass flakes and 5-40% of epoxy resin. The invention further provides a pipeline coated with the pipeline coating, a method using the pipeline coating to coat the pipeline and application of the pipeline coating comprising the asphalt composition. The pipeline coating is simple in manufacture method, has excellent impact resistance and flexibility and further displays excellent high-temperature property and adhesive force.

Description

technical field [0001] The present invention relates to pipe coatings, methods of coating pipes and the use of bituminous compositions as pipe coatings. Background technique [0002] Pipeline is an effective facility for long-distance or short-distance transportation of gas, liquid and slurry materials with minimal impact on the environment. Long and large diameter pipes are usually made of corrosion resistant carbon steel based materials, iron based materials. The corrosion process is a naturally occurring process in which iron is transformed into oxides by the action of water and oxygen from the air. This process affects almost all ferrous structures above, below ground and in water. Visible and above-ground structural members may be protected by application of ordinary paint or some other form of coating. However, lines are seldom visible, so they must be protected from the environment with a suitable corrosion-resistant coating throughout their lifetime. A common met...

AI Technical Summary

Problems solved by technology

Although the pipe coating of WO 00 / 55271 exhibits excellent high temperature performance, its use requires a premixing step and the presence of carbon black

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