IPN8710 Internal Coating Water Steel Pipe

The internal anticorrosive coatings in carbon steel pipe with an Interpenetrating polymer network (IPN) structure can be used for water supply. IPN 8710 coating consists of polyurethane resin and modified epoxy resin and asphalt, anti-rust pigments and additives such as grinding precision filtration. It is characterized by non-toxic, low viscosity, high strength, excellent resistance to abrasion, hydrolysis and corrosion. IPN8710 anticorrosive coating is suitable for a buried pipeline in the drinking water tank, water tower, beer can, water supply pipeline of petrochemical, petroleum, offshore platform, ship, water conservancy, municipal engineering, metallurgy and other industries, also used for fuel oil, gasoline and other metal containers, concrete container interior coating finish.

IPN 8710 Coating Steel Pipe Processing:

1. Surface treatment of steel pipe: Sandblasting and rust removal on the surface of the steel tube reached the Sa2.5 level, and the Profile gauge was about 30 um. The treated surface should be primed within 24 hours.

2. Coating: The coating of group A and group B shall be configured according to the proportion of weight A: B= 11:1 before use. The finished coating should be used up within 5 hours.

3. Painting process: Ordinary spraying, high-pressure airless spraying, painting brush and other processes can be used for construction. The next coating should be applied after the previous one has dried. Special diluent dilution can be used when viscosity is too large.

Coating Structure

Grades	Structure	Usage (kg/m2）	Dry coating thickness（um）
General	Primer – primer – external – external	0.8	≥200
Enhanced	Primer twice– external three times	1.0	≥250

Referred Standards For Anti-Corrosion Coating Steel Pipe:

AWWA C203: Coal-Tar Enamel Lining for Steel Water Pipelines

AWWA C205: Cement–Mortar Protective Lining and Coating for Steel Water Pipe 4 In. (100 mm) and Larger—Shop Applied.

AWWA C210: Liquid-Epoxy Coating System for the Interior and Exterior of Steel Water Pipelines.

AWWA C213: Fusion-Bonded Epoxy Coating for the Interior and Exterior of Steel Water Pipelines.

AWWA C222: Polyurethane Coatings for the Interior and Exterior of Steel Water Pipe and Fittings.

The excellent adhesion of high-density Polyethylene to steel can make sure the superior long term corrosion resistance and protection for pipelines. And it can reduce the total cost of cathodic protection during the operation of the pipeline. As one of the leading suppliers and manufacturers of coating carbon steel pipe in China, WLD steel supplies the IPN8710 steel pipe and coated pipe fittings according to AWWA standard for applications in buried or submerged applications. With the partnership of the major steel mills in China, comprehensive advanced coating measures are provided for your pipe needs.