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What Is PPGI?

The full form of PPGI is pre-painted galvanized iron. It is also known as pre-coated steel, color coated steel, etc., which is an extension of GI. As the name implies, it uses zinc-coated steel as substrate, and then it is cleaned, pre-treated, applied with layers of coatings to make it more beautiful and durable to use. There are pre-painted galvanized steel coils and sheets on the market. Please follow Wanzhi Steel to review more details.

PPGI Stee Coil

PPGI Stee Coil

PPGI Sheets

PPGI Sheets

Structure of PPGI Steel Sheet

As the picture shows, it is composed of base metal, zinc coating, pre-treatment (chemical conversion coating), primer coating, and top/back coating.

Structure of Prepainted Galvanized Steel

Structure of Prepainted Galvanized Steel

Production Process of PPGI Coil

The most commonly used method is a double-side and twice-coating process. It means the back and topsides will be painted twice. Let’s review step by step.

1. Pre-treatment

GI coils are uncoiled and welded first. Then go through the inlet looper to be cleaned and pre-treated continuously (such as degreasing). After that, a layer of chemical conversion coating is formed on the surface.

2. Painting Process

The back and top sides of the steel coil will be painted and dried. Generally, the top coating will be thicker, say 11-35 μm. The thickness of the coating can be customized according to your requirements.

3. Cool down the coated steel coil.

4. Quality control.

The colored coils will be tested by professional equipment and specialized persons.

5. Roll the qualified steel coils up for sale.

PPGI Coil Production Process

Production Process of PPGI Coil

PPGI Coil & Sheets

Color coated GI steel is sold in coils or sheet forms, including profile sheets and plain sheets.

1. What is PPGI Coil?

PPGI coil is rolled-up color steel sheets, which are easy to transport. Besides, it is a great investment project, because it can be further processed for different uses. Wanzhi’s prepainted galvanized steel coil often weighs about 4 tons. The weight can be customized according to your needs. If you are interested, please contact us for details. We also offer great discounts for bulk orders.

PPGL Coils

PPGL Coils

Colour Coated Steel Sheets

Colour Coated GI Sheets

2. What is PPGI Sheet?

The PPGI sheet meaning is the sheet form of the pre-painted steel coil. It is a derivative product of pre-painted galvanized coils after shearing, profiling, etc. It is a kind of semi-finished or finished product, which can be invested in or used directly.

We can find PPGI plain sheets and profile sheets, such as corrugated, tiles, etc. on the market. It allows customization of the length, width, designs, etc. Due to the diverse options, GI colour coated sheets are widely used in roofing, wall panels, home appliances, furniture, etc.

Construction Use

Construction Use

PPGI Coil for Home Appliances Uses

Home Appliances

Characteristics of PPGI Steel

1. Excellent Corrosion Resistance

2. Smooth Surface and Beautiful Appearance

3. Good Processing Performance

4. Light in Weight

5. Various Colors and Designs (Wide Applications)

6. Custom Solutions

7. Great Durability (Long Service Life)

Final Words

PPGI steel is a cost-effective material, which can be applied in various industries, such as construction, transportation, home appliances, furniture, etc. PPGI coil is suitable for investment because of its promising market and great processability. While the pre-painted galvanized sheet is user-friendly, which can be used or sold directly. Generally, the pre-painted GI sheet price will be higher than that of the same PPGI coils. You can choose according to your needs. If you have any questions, please feel free to contact us!

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