IPN 8710 Coating Steel Pipe For Potable Water

IPN8710 consists of polyurethane resin and modified epoxy resin and asphalt, anti-rust pigments and additives such as grinding precision filtration and become a new type of anticorrosive coatings with Interpenetrating polymer network (IPN) structure. It is characterized by non-toxic, low viscosity, high strength, excellent resistance to abrasion, hydrolysis and corrosion. IPN8710 anticorrosive coating is suitable for 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 ERW steel pipe


IPN8710 coating technical index:

Item

Index

Primer panting

Finish panting

Color

Grey

White

Viscosity(25±1°C)(S)

60~80

60~100

Fineness(um)

≤80

≤80

Solids content(%)

>70

>75

Drying time

(25±1°C)

Surface drying(h)

≤1

≤1

Whole drying(h)

≤24

≤24

Adhesion grades

1

1

Flexibility(mm)

1

1

Impact Resistance(cm)

≥50

≥50

Hardness

≥0.5

≥0.5

Coating thickness(um)

40~60

40~60

Usage(kg/m2)

0.2

0.2~0.25


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

 

IPN 8710 coating steel pipe material:

GB Q235B, JIS SS400B, ASTM Gr.65, IOS E235B, EN S235JR

 

IPN 8710 coating steel pipe processing:

1. Surface treatment of steel pipe: Sand blasting and rust removal on the surface of steel tube reached 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.

 

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.