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What are the precautions for purchasing steel gratings?

Nowadays, steel gratings are being used more and more widely in our daily days, and then hot-dip galvanized steel gratings are being used more and more in the actual process, but as the popularity continues to deepen , true and false hot-dip galvanized steel grating has also come out, today to teach everyone to distinguish hot-galvanized steel grating:
(1) Center distance of hot-dip galvanized steel grating flat steel: According to the series: series 1 is 30mm; series 2 is 40mm; series 3 is 60mm.
 (2) Center distance of hot-dip galvanized steel grid crossbar: Series 1 is 100mm, Series 2 is 50mm. Other standards can be customized.
(3) Hot-dip galvanized steel grid flat steel: The raw material is Q235A or stainless steel, which has ordinary flat type, non-slip tooth type and section I type. Commonly used standards are 20*5, 25*5, 25*3, 32*5, 32*5, 40*5, 40*3, 50*5, 65*5, 75*6, 100*8, 100*10 Wait.
(4) Hot-dip galvanized steel grid crossbar: The raw material is round steel, twisted square steel, square steel or hexagonal steel of Q235A or 304 stainless steel. Twisted square steel is made by drawing and twisting the square mold. The common standards are 5*5, 6*6, 8*8mm and so on. This is the four characteristics of distinguishing between true and false hot-dip galvanized steel gratings, which can be distinguished according to the above four characteristics. I look forward to assisting you.
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