1, steel layer: substrate, hardness value of 159DPN;

2, high zinc phosphating layer: has good corrosion resistance, and enhances the adhesion between the coating film and the substrate.

3, sublead layer: significant monoclinic series columnar structure, Fe content is 6%, non-toxic, corrosion resistance, hardness value of 179DPN;

4, pure zinc layer: dense hexagonal crystal system, deformation processing is not easy to break, zinc purity 98.5%, hardness value of 70DPN;

5, high temperature curing layer: excellent corrosion resistance and impact resistance, with excellent UV resistance, oxidation resistance and surface self-cleaning performance, color change rate of 15 years does not exceed 5%;

6, zinc steel alloy layer: the closest to the substrate of a dense alloy layer, complex structure, strong corrosion resistance, FeZn7 and FeZn13 combined existence, hardness value of 211DPN, containing Fe is 7%-11%.

Qingdao Ben Xiang iron fence has six layers of substrate, you should have some understanding of it! Want to customize and buy wrought iron guardrail, welcome to our company, our company to provide you with quality service. Want to customize wrought iron gates and wrought iron guardrail to Kim Taishun.