Folding scaffolding is a working platform that is made of GB 2.5 high quality galvanized pipe, durable and durable; proportional structure is reasonable, rustproof; easy to use, stylish and beautiful, easy to carry. The folding scaffold can be loaded with about 400 kg after being unfolded, which is an indispensable tool in aerial work.
The key thing to understand is the material of the folding scaffold. The galvanized steel pipe can be divided into cold-plated pipe and hot-dip pipe. The cold-plated pipe can be divided into cold-galvanized pipe and cold-galvanized steel pipe. The former is electro-galvanized and galvanized. The amount is small and the corrosion resistance is not good, so it is not recommended as a material for folding scaffolding.
The zinc layer of the cold-galvanized steel pipe is an electroplated layer, and the zinc layer and the steel pipe base are separately layered. The zinc layer is thin, and the zinc layer is simply attached to the steel pipe base, which is easy to fall off, so its corrosion resistance is poor, and it is not suitable as a material for folding scaffolding.
The hot-dip galvanized tube is obtained by reacting a molten metal with an iron matrix to produce an alloy layer, thereby combining the substrate and the plating layer. Hot-dip galvanizing is to pickle the steel pipe first, in order to remove the iron oxide on the surface of the steel pipe, after pickling, it is washed by ammonium chloride or zinc chloride aqueous solution or a mixed aqueous solution of ammonium chloride and zinc chloride, and then fed. In the hot dip plating tank, it has the advantages of uniform plating, strong adhesion and long service life.
The hot-dip galvanized steel pipe is formed by complex physical and chemical reaction between the steel pipe base and the molten plating solution. Its surface has a zinc-iron alloy layer with a corrosion-resistant structure, so its corrosion resistance is strong, and the folding scaffolding is made. This type of material should be selected.