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Do you know about the galvanized fire pipe?

Nov. 22, 2019
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Our company is one of the most professional galvanized steel water pipe supplier in our country. At present, the galvanized fire pipe and the galvanized steel construction pipe is our hot sale products. In our local place , these products are very popular in our customer and they add the order to our company.

Also known as galvanized fire pipes, are divided into hot galvanizing and electronic galvanizing. Hot galvanizing has a thick galvanized layer and has the advantages of uniform coating, strong adhesion and long service life. Electronic galvanizing is low in cost, the surface is not very smooth, and its corrosion resistance is much worse than that of galvanized pipes. Galvanized steel pipes are mainly classified into cold-coated pipes and hot-coated pipes. The former has been banned, while the latter has been recommended by the state for temporary use. Hot-galvanized pipes are made by reacting molten metal with an iron matrix to produce an alloy layer, thus combining the matrix and the coating. Hot galvanizing is to pickling the steel pipe first. In order to remove iron oxide on the surface of the steel pipe, after pickling, the steel pipe is washed in an aqueous solution of ammonium chloride or zinc chloride or a mixed aqueous solution of ammonium chloride and zinc chloride, and then sent into a hot dip plating tank. Hot galvanizing has the advantages of uniform coating, strong adhesion and long service life. Most of the processes in the north adopt direct coil zinc filling process with galvanized strip. Cold galvanizing of cold galvanized pipes is electronic galvanizing. The amount of galvanizing is very small, only 10-50g/m2. Its corrosion resistance differs greatly from that of hot galvanized pipes. In order to ensure the quality, most of the normal galvanized pipe manufacturers do not use electronic galvanizing (cold plating). Only those small enterprises with small scale and outdated equipment adopt electronic galvanizing, and of course their prices are relatively low. Cold galvanized pipes are not allowed to be used as water and gas pipes in the future.

Square Galvanized Steel Pipe

Square Galvanized Steel Pipe

Most square tubes are made up of galvanized steel tubes, which are unpacked, flattened, crimped and welded to form round tubes, which are then rolled into square tubes and then cut to the required length. Generally, 50 square tubes per package are mostly of large specifications in the spot, ranging from 10*10*0.8-1.5~~500*500*10-25. The square tubes are divided into structural square tubes, decorative square tubes, building square tubes, mechanical square tubes, etc. according to their uses. Square tube is a kind of appellation for square tube, that is, steel tube with equal side and length. It is made by rolling strip steel through technological treatment.

Replacing and drawing square tubes: strip steel is usually unpacked, flattened, crimped and welded to form round tubes, which are then rolled into square tubes and then cut to the required length.