GB/T 37594-2019Technical specification for anti-UV three-layer external fusion powder coating corrosion protection for steel pipe (English PDF)

1 Scope

This standard specifies the structure, grade, requirements, inspection and rules, and coating of anti-UV three-layer sintered powder anti-corrosion coating for steel pipelines.

Repair and recoating, product identification, storage and transportation, on-site replenishment, safety, hygiene and environmental protection, document management requirements.

This standard is applicable to steel pipelines with a nominal diameter of >=15mm and an operating temperature of -30°C~100°C.

Design, construction and inspection of layered powdered anti-corrosion coating. Other working conditions can be referred to for implementation.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.

Pieces. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 1728 paint film, putty film drying time determination method

GB/T 1732 paint film impact resistance test

Determination of neutral salt spray resistance of GB/T 1771 paints and varnishes

GB/T 1865 Paint and varnish artificial weathering and artificial radiation exposure filtered Xenon arc radiation

GB/T 3091 welded steel pipe for low pressure fluid transportation

GB/T 4472 Determination of density and relative density of chemical products

GB/T 5210 paint and varnish pull-off adhesion test

GB/T 6554 Resin-based composites for electrical insulation - Part 2. Test method

GB/T 6739 Paint and varnish pencil method for determination of film hardness

GB 7692 Painting operation safety regulations Pre-painting process safety and ventilation purification

GB/T 8163 seamless steel pipe for conveying fluid

GB/T 8923.1.Determination of surface cleanliness of steels - Part 1 . Uncoated steel

Corrosion grade and treatment grade of the surface of the steel after surface and overall removal of the original coating

GB/T 8923.3 - Determination of surface cleanliness of steels - Part 3. welds, edges and others

Processing level of surface defects in the area

GB/T 9274 Determination of liquid-resistant medium for lacquers and varnishes

GB/T 9286 color and varnish paint film cross-cut test

GB/T 9711 oil and gas industrial pipeline transportation system steel pipe

GB/T 18570.3 - Evaluation of surface cleanliness of steels -- Part 3.

Surface dust evaluation (pressure sensitive tape method)

GB/T 21782.13 Powder coatings - Part 13.

GB/T 23257 buried steel pipeline polyethylene anti-corrosion layer

GB/T 50087 industrial enterprise noise control design specification

GBZ 1 industrial enterprise design hygiene standard

JB/T 6570 Ordinary abrasive magnetic content determination method

SY/T 0063 pipeline anti-corrosion layer leak test method […]