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PPGI (Pre-Painted Galvanized Steel) and PPGL (Pre-Painted Galvalume Steel) are significantly different in many aspects. These differences are mainly reflected in their material composition, performance characteristics, application scenarios and costs.
1.Material composition
PPGI: PPGI steel plate, also known as color-coated plate, is based on cold-rolled galvanized plate. It undergoes surface pretreatment (degreasing, cleaning, chemical conversion treatment), and then is continuously coated (roller coated) with one or more layers of paint. A product that is baked and solidified. Its main material is galvanized steel plate.
PPGL: PPGL steel plate is made of galvalume steel plate through a coating process similar to PPGI. Galvalume steel plate is an alloy coated with 55% aluminum, 43.4% zinc and 1.6% silicon on the surface of cold-rolled steel plate, which has stronger corrosion resistance and weather resistance.
2.Performance characteristics
Rust prevention and corrosion resistance: Since PPGL uses galvalume substrate, its corrosion resistance and weather resistance are usually better than PPGI. The aluminum-zinc alloy layer can effectively prevent steel plates from being corroded and extend their service life.
Aesthetics: Both have good appearance and can be customized in various colors according to customer needs. There is not much difference in aesthetics between PPGI and PPGL, but PPGL may maintain longer-lasting color vividness in outdoor applications due to its greater weather resistance.
Processability: Both have good processability and can be used for shearing, stamping, bending and other processing operations. However, due to the high strength of PPGL's substrate, special attention may be required in certain processing scenarios.
3. Application scenarios
PPGI: Due to its relatively low cost and moderate performance, PPGI is widely used in construction, home appliances, transportation and other fields. In the field of construction, PPGI is often used to make wall panels, roofs, partitions, etc.; in the field of home appliances, it is used to make the casings of refrigerators, washing machines, etc.
PPGL: Due to its stronger corrosion resistance and weather resistance, PPGL is more suitable for applications in outdoor or harsh environments. It is often used in building roofs, exterior walls, billboards and other places that require long-term exposure. In addition, PPGL is also used in the production of casings for automobiles, home appliances and other products, especially where higher weather resistance requirements are required.
4. Cost
Generally speaking, because PPGL uses a more complex galvanized substrate, its production cost is relatively high, so the market price is slightly higher than PPGI. However, given its longer service life and lower maintenance costs, PPGL may be more economical in the long term.
Classification of stainless steel pipes1. Classification by production method:
(1) Seamless tubes - cold drawn tubes, extruded tubes, cold rolled tubes.
(2) Welded pipe:
(a) Classification by process - gas shielded welded pipe, arc welded pipe, resistance welded pipe (high frequency, low frequency).
(b) According to welding seam - straight seam welded pipe, spiral welded pipe.
2. Classification according to cross-sectional shape: (1) circular steel pipe; (2) rectangular pipe.
Spiral steel pipe stacking requirements1. The principle requirement for stacking spiral steel pipes is to stack them according to types and specifications on the premise of ensuring stable stacking and ensuring safety. Different types of materials should be stacked separately to prevent confusion and mutual erosion;
Difference Between Straight Seam Steel Pipe and Spiral Steel Pipe
Advantages of Using Carbon Steel in ConstructionSteel is an alloy metal, which means it’s a combination of several types of elements. In the case of steel, this is a combination of iron, carbon, and trace elements. It has a number of advantages for construction applications due to the fact that it’s fairly inexpensive to manufacture and has a very high tensile strength.
What determines the type of steel is the ratio of elements used to produce it, and it’s the magic formula of the carbon steel alloy created that makes it preferred for many projects. While there are thousands of different types of steel, these types are generally bucketed into four categories: carbon steel, alloy steel, stainless steel, and tool steel.- Anti-corrosion steel pipe classificationPN8710 anti-corrosion
When there are many types of corrosive media in steel pipes, such as acids, alkalis, salts, oxidants and water vapor, the coating must be chemically inert and resistant to acid, alkali and salt corrosion. The coating film should have a dense structure, good waterproof permeability and strong adhesion. , tough and plump. In this case, IPN8710 anti-corrosion is suitable. 
Global crude steel production fell 4.3% year-on-year in MarchOn April 23, the World Steel Association (WSA) released global crude steel production data for March. In March, crude steel output in the world's 71 countries and regions included in the statistics was 161.2 million tons, a year-on-year decrease of 4.3%. In the first quarter of this year, crude steel output in the world's 71 countries and regions included in the statistics was 469 million tons, a year-on-year increase of 0.5%.
