• April 25th 2023

PPGI (Prepainted Galvanized Iron) and PPGL (Prepainted Galvalume Steel) are both types of pre-painted steel used for a variety of applications. Each has its own set of advantages and disadvantages, which makes it difficult to definitively say which is better, as the choice depends on the specific requirements of a project.

PPGI (Prepainted Galvanized Iron)

PPGI is made by coating a galvanized iron base material with a layer of paint. It is widely used in various industries such as construction, automotive, and appliances.

Advantages of PPGI

  • Good corrosion resistance: The galvanized iron base material provides excellent protection against rust and corrosion.
  • Aesthetic appeal: PPGI is available in a wide range of colors and finishes, making it suitable for various applications where aesthetics are important.

Disadvantages of PPGI

  • Lower heat resistance: PPGI may not be the best choice for applications that require high heat resistance, as the galvanized coating can deteriorate at higher temperatures.

PPGL (Prepainted Galvalume Steel)

PPGL is made by coating a Galvalume steel base material (a combination of zinc and aluminum) with a layer of paint. It is commonly used in the construction industry for roofing and wall cladding applications.

Advantages of PPGL

  • Superior corrosion resistance: The Galvalume steel base material provides better corrosion resistance than galvanized iron.
  • Higher heat resistance: PPGL has better heat resistance than PPGI, making it more suitable for applications that require exposure to high temperatures.

Disadvantages of PPGL

  • Cost: PPGL is generally more expensive than PPGI due to the added cost of the Galvalume steel base material.

where to get PPGI and PPGL at best price?

To find the best price for PPGI and PPGL, you can try the following:

  • Compare prices from multiple suppliers: You can search online for PPGI and PPGL suppliers and compare their prices. You can also reach out to local suppliers and ask for quotes.
  • Purchase in bulk: Buying PPGI and PPGL in bulk can often result in lower prices. Consider ordering larger quantities to get a better deal.
  • Look for promotions and discounts: Keep an eye out for promotions and discounts offered by suppliers. Some suppliers offer discounts for first-time buyers or bulk orders.
  • Negotiate with suppliers: If you have a good relationship with a supplier or are ordering a large quantity, you may be able to negotiate a better price.
  • Consider the location of the supplier: The location of the supplier can affect the price of PPGI due to shipping costs. Consider working with a local supplier to minimize shipping costs.

Remember to also consider the quality of the PPGI material and the reputation of the supplier when making your decision. Qingdao Qinghe Steel is a professional manufacturer with PPGI and PPGL(sheets and coils). If you are still hesitating, please contact us.


The choice between PPGI and PPGL depends on the specific requirements of your project. PPGI is a good option for applications where good corrosion resistance and aesthetics are important, while PPGL is better suited for projects that require superior corrosion protection and heat resistance. Consider your project's needs, budget, and aesthetic preferences when making your decision.