polyurethane material in the pipe Application

Have great use of the polyurethane material , the pipe also has a very large application . Anticorrosive material selection determines whether the long-distance oil and gas pipelines build quality . In the long-distance oil and gas pipelines construction, anti-corrosion  potassium stearate materials the basic requirements are:
( 1 ) Good electrical insulation: anti-corrosion layer between the opposite sides of a certain area of ​​resistance should be less than 10000Ω · m2; resistant strength not less than the breakdown voltage spark detector test voltage standard.
( 2 ) resistance to cathodic stripping : coating should have a certain ability to ensure corrosion resistance to cathodic stripping layer  PVC stabilizer for fittings and the substrate can be effectively and stick together.
( 3 ) sufficient mechanical strength : a certain impact strength, handling and to prevent damage caused by the soil pressure ; has good bending resistance , to ensure that the pipe construction not be damaged by bending ; has better wear , so as to prevent damage due to soil friction ; the pipe has good adhesion.
( 4 ) Good Stability: resistance to antimony oxide  atmospheric aging properties ; chemical stability ; good water resistance, low water absorption ; has sufficient heat resistance ; resistance, low temperature performance, ensure its stacked pull operation and construction no cracks, no shedding.
( 5 ) simple repair of : coating should be easy to repair after damage , saving construction time.
( 6 ) anti-microbial properties .