1: Observe the thickness of the substrate and the thickness of the lamination
The high quality PPGI corrugated roofing sheet is composed of a substrate and a colored peritoneal or plated layer. We must first consider the thickness of the substrate and peritoneal coating. The better color steel plate substrate is 0.02~0.05mm, and the thickness of the lamination or coating is often only 0.15mm. The thickness of the substrate is important because it affects the use of the time of the color steel plate. Some manufacturers of color steel plates often make hands and feet on the substrate and color steel plate coating or lamination. They reduce the thickness of the substrate but increase the thickness of the peritoneum to reduce the production cost of the color-coated corrugated roofing sheet, which greatly reduces the use of color steel plates. Life is up.
2: Observe the outer leakage edge of the color steel plate
When I get a piece of color steel plate, I first observe whether the exposed steel plate such as the cross section of the color steel plate is finely crystallized, whether it is gray, dark and impurities. If the cut surface is crystalline and fine, the quality is superior.
3: Look at the price
Anything is a penny. When we compare the quality of color steel plates, the price is one side, but don't pay too much attention to high quality color-coated corrugated roofing sheet price. If the price of a color steel plate is much lower than the others, then we have to pay attention to.
4: Listen to the sound
If you use a finger or a hard object to strike the color steel plate, if the material of the color steel plate is poor, the sound emitted is boring, the metal sound is not obvious, and the metal color sound of the better color steel plate is louder and crisper.
5: Check the quality certificate of color steel plate
Is there a test standard for the relevant department? If possible, try to go to the manufacturer of the PPGI corrugated roofing sheet for field visits. Look at the environment of the company, whether it is formal. Inquire about the reputation of this company in the market.
The high quality PPGI corrugated roofing sheet is composed of a substrate and a colored peritoneal or plated layer. We must first consider the thickness of the substrate and peritoneal coating. The better color steel plate substrate is 0.02~0.05mm, and the thickness of the lamination or coating is often only 0.15mm. The thickness of the substrate is important because it affects the use of the time of the color steel plate. Some manufacturers of color steel plates often make hands and feet on the substrate and color steel plate coating or lamination. They reduce the thickness of the substrate but increase the thickness of the peritoneum to reduce the production cost of the color-coated corrugated roofing sheet, which greatly reduces the use of color steel plates. Life is up.
2: Observe the outer leakage edge of the color steel plate
When I get a piece of color steel plate, I first observe whether the exposed steel plate such as the cross section of the color steel plate is finely crystallized, whether it is gray, dark and impurities. If the cut surface is crystalline and fine, the quality is superior.
3: Look at the price
Anything is a penny. When we compare the quality of color steel plates, the price is one side, but don't pay too much attention to high quality color-coated corrugated roofing sheet price. If the price of a color steel plate is much lower than the others, then we have to pay attention to.
4: Listen to the sound
If you use a finger or a hard object to strike the color steel plate, if the material of the color steel plate is poor, the sound emitted is boring, the metal sound is not obvious, and the metal color sound of the better color steel plate is louder and crisper.
5: Check the quality certificate of color steel plate
Is there a test standard for the relevant department? If possible, try to go to the manufacturer of the PPGI corrugated roofing sheet for field visits. Look at the environment of the company, whether it is formal. Inquire about the reputation of this company in the market.
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