What Are The Characteristics Of Seamless Galvanized Pipe?

The galvanized steel pipe in the galvanized steel strip is divided into two types: hot-dip galvanized and electro-galvanized, with thick coating, uniform coating, strong adhesion, and long service life. The cost of galvanizing is low, the surface is not smooth, and the corrosion resistance is much worse than that of galvanized pipes. The seamless galvanized pipe is hollow in cross-section and is widely used as a pipeline for transporting fluids such as oil, natural gas, natural gas, water, and certain solid materials. Compared with solid steel such as round steel, galvanized seamless square tube has the same bending strength and torsional strength and is lighter in weight. They are economical steels widely used in the manufacture of structural and mechanical components such as oil drill pipes, automotive drive shafts, bicycle frames, steel scaffolding for construction, and other steel pipes used to make ring components. They can improve material utilization, simplify the manufacturing process, save materials and processing time, and are widely used in steel pipe manufacturing.

Seamless galvanized pipe: The molten metal reacts with the iron substrate to form an alloy layer, thereby bonding the substrate and the coating together. Hot-dip galvanizing is to pickle the steel pipe first. In order to remove iron oxide on the surface of the steel pipe, the steel pipe is washed with ammonium chloride or zinc chloride aqueous solution or a mixed aqueous solution of ammonium chloride and zinc chloride after pickling, and then sent to a hot-dip galvanizing tank. The hot-dip galvanized layer is uniform and has strong adhesion. Complex physical and chemical reactions occur between the substrate and the plating solution, and a corrosion-resistant zinc-iron alloy layer should be formed, which has a compact structure and the advantages of long service life. The alloy layer combines the pure zinc layer and the steel pipe substrate, so it has strong corrosion resistance.

Galvanized seamless square tube: The amount of galvanizing is very small, only 10-50g/m2. Its corrosion resistance is very different from that of galvanized pipes. For ordinary galvanized pipe manufacturers, cold-galvanized pipes are allowed to be used as water pipes and gas pipes. The galvanized layer is an electroplated layer, and the zinc layer separated from the steel pipe substrate is very thin. The zinc layer simply adheres to the steel pipe substrate and falls off easily. Therefore, its corrosion resistance is poor.

The seamless galvanized pipe has a plastic protective layer on the inner and outer surfaces of the plastic-coated composite steel pipe and the composite pipe fitting, and a sealant is applied to the joint between the end of the plastic-coated composite steel pipe and the sealing gasket, which solves the problem of the plastic-coated composite steel pipe. The problem of sealing and anti-corrosion of the threaded connection, at the same time, it can be smooth inside, the fluid is smooth, and the power is saved. It can be applied to the transmission pipeline of corrosive medium fluid and the environmental protection water pipeline. It overcomes the problems caused by welding or galvanized steel pipes. Ammonium chloride or aqueous solution or ammonium chloride and mixed aqueous solution tank for cleaning, and then sent to the hot-dip coating tank. Hot-dip galvanizing has the advantages of uniform coating, strong adhesion, and long service life.

The galvanized seamless side has strong acid and alkali corrosion resistance, and is especially suitable for high-sulfur water in coal mines, containing calcium and magnesium plasma. In the beginning, it was mainly used for anti-corrosion. After years of development, some varieties with low-temperature fast curing, thin coating, and good decoration have been developed.