Galvanized Strip Welded Pipe

Galvanized steel strip is processed by ordinary steel strip pickling, galvanizing, packaging and other processes. It is widely used because of its good anti-corrosion performance. It is mainly used to make metal products that are cold-worked and no longer galvanized. For example: metal products such as light steel keels, peach-shaped columns for guardrails, sinks, rolling doors, bridges, etc.

General civilian use. Processing household appliances, such as sinks, etc., can strengthen door panels, etc., or strengthen kitchen utensils, etc. achitechive. Light steel keels, roofs, ceilings, walls, water barriers, rain decks, rolling shutter doors, warehouse inner and outer panels, insulation pipe shells, etc. household appliances. Reinforcement and protection in household appliances such as refrigerators, washing machines, showers, and vacuum cleaners. Automobile industry. Cars, trucks, trailers, luggage carts, refrigerated truck parts, garage doors, wipers, fenders, fuel tanks, water tanks, etc. industrial sector. As the base material of stamping materials, it will be used in bicycles, digital products, armored cables and so on. other aspects. Equipment enclosures, electrical cabinets, instrument panels, office furniture, etc.

The post-treatment of galvanized steel strip includes three aspects, passivation, pre-phosphating and oiling. First of all, the passivation treatment of galvanized strip steel can improve the surface structure and gloss of the galvanized layer, improve the corrosion resistance and service life of the galvanized layer, and improve the bonding force between the coating and the base metal. The passivation treatment mainly adopts chromate passivation. Add some activators, such as fluoride, phosphoric acid or sulfuric acid, to the passivation solution to obtain a thicker chromate film after passivation. When there is fluoride in the passivation solution, the surface tension of the steel strip can be reduced, the film-forming reaction can be accelerated, and the chemical polishing effect can be increased to make the passivation film fine and bright.

The application effect of galvanized steel strip meets modern needs and is widely used as a building material today. Galvanized strip steel has the characteristics of no rust and corrosion resistance for many years. It can not be affected by the adverse external environment and always maintain its own performance and appearance. In the process of using galvanized steel strip, in order to improve its working efficiency and its own characteristics, the finished galvanized steel strip can be post-treated to make its performance even better.

Galvanized strip welded pipe has adjusted the production process of hot-dip galvanized pipe. First pickle the strip steel used for pipe making, in order to remove the iron oxide on the surface of the strip steel, after pickling, wash it in an aqueous solution of ammonium chloride or zinc chloride or a mixed aqueous solution of ammonium chloride and zinc chloride, and then into the hot-dip coating tank. It is then air-dried and made into tubes. The coating is uniform and bright, and the amount of galvanizing is very small, which is lower than the cost of producing hot-dip galvanized pipes.

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