PPGI Manufacturing Process

IBC Steel Group is a leading PPGI coil manufacturer from China. We provide PPGI product. Ranging from thickness from 0.12 to 2.0mm, and width from 600mm to 1500mm; Zinc Coating from 40g~275g per square meter. And all RAL colors, or according to customers requires. Now, let us introduce PPGI manufacturing process.

PPGI Coil Manufacturing Process

IBC Group adopts coil coating process, which refers to the galvanized steel being cleaned, pre-treated, and painted in coil form continuously. Let’s review the PPGI coil manufacturing process step by step.

  • Firstly, Zinc coated steel substrate is uncoiled and welded and then goes through the inlet looper to be cleaned and pretreated continuously.
  • Secondly, After pre-treatment, a layer of chemical conversion coating formed on the surface.
  • Thirdly, Paint and dry the back and top sides of galvanized steel twice (namely twice-side twice-coating method). For some special uses, we painted and dried them for three times.
  • Fourthly, Cool down the coated steel.
  • Moreover, after quality testing, the colour coating sheet should coil for sale.
PPGI Manufacturing Process

That’s why there are several layers of pre-painted galvanized steel coils. Including base metal, zinc coating (two sides), chemical conversion coating (two sides), primer coating (two sides), and top/back coatings.

Videos of PPGI Manufacturing Process

PPGI Manufacturing Process-1

PPGI Coils Manufacturer

There many PPGI coils manufacturers in China, such as IBC Steel, Baosteel, Angang Steel, Shougang Group, etc. IBC Steel Group is not as famous as Baosteel or Angang Steel. But we also offer top-quality steel products at a more competitive price, as well as full service.

Firstly, IBC Group Steel is a company integrating research, production, and trade. Our factory is located in Tianjin Province, with a monthly output of 10,000 tons and an inventory of 10 million tons.

Secondly, We are a global supplier, which has 12 years of exporting experience. We have clients from more than 50 countries, such as Kenya, Chile, Turkey, Brazil, Singapore, Venezuela, etc.

Thirdly, There is a wide range of steel products to choose from. Except for PPGI coils, we also have plain sheets, profile sheets, and color corrugated steel sheets for sale.

What is the shipping package?

Seaworthy package plus in-container reinforce, eye to wall/eye to sky with wood pallet available for option.

Standard Export Packing:

  • 4 eye bands and 4 circumferential bands in steel
  • Galvanized metal fluted rings on inner and outer edges
  • GI metal and waterproof paper wall protection disk
  • Galvanized metal and waterproof paper around circumference and bore protection

About the sea worthy packaging: extra reinforcement before shipment to ensure that the goods are safer and less damaged to customers.

How to buy PPGI / PPGL?

  • Welcome to contact us to get the latest competitive price.
  • Email: [email protected]
  • Tel:+86-22-27168866
  • Mobile: +86-13820207107


PPGI, short for pre-painted galvanized steel, also known as pre-coated steel, color coated steel etc. Using Hot Dip Galvanized Steel Coil as the substrate. PPGI is made by first going through surface pretreatment. Then the coating of one or more layers of liquid coating by roll coating, and finally baking and cooling. The alu and zinc alloy coating enables the steel with much better anti corrosion performance with very economic cost rate. Thickness 0.13mm-0.50mm steel is popular for roofing, 0.60-3.0mm steel popular for deforming and decking.

We as a PPGI coil manufacturer. IBC Steel Group supply PPGI coils are widely used in the construction industry. As raw material for the production of corrugated panels, fencing products, drywall panel profiles, ventilation systems etc. Recommended for both outside and inside usage, galvanized steel has a high resistance to corrosion in different environments, due to a protective layer of zinc of 40 to 275 grams per square meter.