How to Storage Pre-painted Coils?

Pre-painted coils use cold-rolled strip steel, galvanized strip steel (electric galvanized and hot dip galvanized) as the substrate, after surface pretreatment (degreasing and chemical treatment), with the method of roll coating, coated with one or more layers of organic coating, after baking and cooling of the plate. It is mainly used in construction (outdoor) workshops, agricultural warehouses, residential prefabricated components, corrugated roofs, household appliances, etc.

Pre-painted Coils Production Process

The main production processes of the common two-coating and two-drying continuous color coating unit are as follows: Uncoiler, stitching machine, roller, tension machine, open-book looping, alkaline degreasing, cleaning, drying, passivation, at the beginning of drying, primary coat, paint drying, paint finishing coating, paint drying, air cooling, winding loop, winding machine, (volume packaging warehousing). The video of the production process of pre-painted coils is for your reference:

Color Coated Coils Applications

Pre-painted coils have lightweight, beautiful appearance, and good corrosion resistance, and can be directly processed, mainly used in advertising, construction, home appliances, electrical appliances, furniture, and transportation industries.

1. In the construction industry, roofs, roof structures, rolling shutter doors, kiosks, shutters, guard doors, street waiting rooms, ventilation channels, etc..

2. Furniture industry, refrigerators, air conditioners, electronic stoves, washing machine shells, oil furnaces, etc..

3. Transportation industry, car ceiling, backplane, coaming, car shell, tractor, ship compartment board, etc. Among these uses are the use of more steel structure plants, composite plate plants, and color steel tile factories.

Pre-painted Coils Features

1. Durability, corrosion resistance, and galvanized steel plate compared with longer service life.

2. Heat resistance, compared with galvanized steel sheets, is not so simple to fade at high temperatures.

3. Thermal reflectivity, for sunlight irradiation has a certain reflection performance.

4. Pre-painted coils have similar processing and spraying performance with galvanized steel sheets.

5. With excellent welding performance.

6. Pre-painted coils have excellent performance and price ratio, durable performance, and reasonable price reservation, which is a rare roll on the market.

Advice for Pre-painted Coils Storage

Storing color-coated steel coils is not an easy task. Improper handling can lead to defects such as scratches, indentations, and rust, which can even cause serious consequences. To ensure the quality of color-coated steel coils, storage procedures must be standardized, and the following key points must be noted.

• Store them indoors in a clean, dry, and well-ventilated environment
• Avoiding outdoor storage or locations subject to condensation or large temperature fluctuations.
• The storage surface must be flat, free of hard objects, and sufficiently load-bearing.
• Rolls should be placed upright on rubber mats, wooden mats, or supports, with the buckle facing upward.
• Thick plates and coils should be stored strategically for easy access and to minimize unnecessary movement.
• Stacking is strictly prohibited to prevent damage, and stacking height must be strictly limited.
• Storage and transportation sites must have sufficient indoor space for lifting equipment.

Changes of Physical properties

Such as pencil hardness, T-bend value, impact energy, and coating properties will significantly change with extended storage. Users are advised to process and use the material as soon as possible.

Conclusion

Selecting high-quality pre-coated coils is only half the battle; standardized warehouse management is another crucial step in ensuring their value. From production to application, every detail is crucial. We not only provide high-performance color-coated coils, but also serve as your comprehensive material management advisor, helping you mitigate risks, reduce costs, and increase efficiency. Contact us today to experience the difference our professional service can make.

 

About Us

Wanzhi Steel Group is a leading manufacturer of pre-painted (PPGL/PPGI) coils, with two color coating lines and an annual output of 320,000 tons. Our products, available in all RAL colors or customized patterns, have been exported to over 100 countries and widely praised. We welcome inquiries and factory visits.