Galvanized square tube is a kind of hollow square section type with square cross-section shape and size made by hot-rolled or cold-rolled galvanized strip steel or galvanized coil as blank, after cold bending and forming, and then high-frequency welding. Steel Pipe. Or the pre-prepared cold-formed hollow steel pipe is subjected to hot-dip galvanizing operation to obtain a galvanized square pipe.
Metals can react with oxygen in the atmosphere to form an oxide film on the surface. The iron oxide formed on ordinary carbon steel will continue to oxidize, so that the corrosion will continue to expand, and eventually holes will be formed. This protects the carbon steel surface by electroplating with paint or oxidation-resistant metal, but this protective layer is only a thin film, and if the protective layer is destroyed, the underlying steel will begin to rust again. Whether the stainless steel pipe is corroded is related to the chromium content in the steel. When the chromium content in the steel reaches 12%, it is not easy to be corroded.
Hot-dip galvanized square pipe: It is a square pipe made of steel plate or steel strip after crimping and welding, and on the basis of this square pipe, the square pipe is placed in a hot-dip galvanizing pool after a series of chemical reactions A square tube formed. The production process of hot-dip galvanized square pipe is relatively simple, the production efficiency is very high, and there are many varieties and specifications. This kind of square pipe requires little equipment and capital, and is suitable for the production of small galvanized square pipe manufacturers
The difference between stainless steel seamless square tube and welded square tube Stainless steel square tube is a kind of hollow long steel, because the section is square, it is called square tube. A large number of pipes are used to transport fluids, such as oil, natural gas, water, gas, steam, etc. In addition, when the bending and torsional strength are the same, the weight is lighter, so it is also widely used in the manufacture of mechanical parts and engineering structures. Pipe classification: square pipes are divided into two categories: seamless steel pipes and welded steel pipes (seamed pipes). According to the cross-section, it can be divided into square and rectangular pipes. The widely used are round steel pipes, but there are also some semicircular, hexagonal, equilateral triangle, octagonal and other special-shaped steel pipes.
Metals can react with oxygen in the atmosphere to form an oxide film on the surface. The iron oxide formed on ordinary carbon steel will continue to oxidize, so that the corrosion will continue to expand, and eventually holes will be formed. This protects the carbon steel surface by electroplating with paint or oxidation-resistant metal, but this protective layer is only a thin film, and if the protective layer is destroyed, the underlying steel will begin to rust again. Whether the stainless steel pipe is corroded is related to the chromium content in the steel. When the chromium content in the steel reaches 12%, it is not easy to be corroded.
Cold galvanized square pipe: The principle of cold galvanizing is used on the square pipe used to make the square pipe have anti-corrosion properties. Different from hot-dip galvanizing, cold galvanizing coatings are mainly used for anti-corrosion through electrochemical principles. Therefore, it is necessary to ensure that the zinc powder is in full contact with the steel, resulting in an electrode potential difference, so the surface treatment of the steel is very important.
Copper tiles, aluminum-magnesium-manganese alloy tiles, colored stone metal tiles, color steel tiles, etc. on the market are collectively referred to as metal tiles; and hot-dip galvanized square pipe is a hollow square-section steel pipe, which is made of steel plate or steel strip. After a series of chemical reactions, it is formed in a hot-dip galvanizing bath; it can also be cold-formed with hot-rolled or cold-rolled galvanized steel strips, and then welded at high frequency. The production process is simple, the production efficiency is high, the variety and specifications are many, and the equipment required is less, but the strength is generally lower than that of the seamless square tube, which is its advantage.
Stainless Steel Square Tube
The advantages of galvanized square pipe in construction engineering
1. Durable: In suburban environments, the thickness of hot-dip galvanized anti-rust can be maintained for more than 50 years without repair; in urban or offshore areas, the galvanized anti-rust layer can be maintained for 20 years without repair.
2. Better reliability: The combination between the galvanized layer and the steel is a metallurgical combination, so that zinc becomes a part of the steel surface, so the durability of the coating is better.
3. Stronger toughness: The galvanized layer forms a special metallurgical structure, which can withstand mechanical damage during transportation and use.
4. Every part of the galvanized square tube can be galvanized, and it can be fully protected even in depressions, sharp corners and hidden places.
Cons: Expensive, requires a sufficient budget. In life, this type of roof tile has been widely used in various roofs, and is widely used in the transformation of pavilions, corridors, ancient buildings, temples and various roofs. It is relatively simple to process galvanized square pipes, but the performance of the pipes after forming has been greatly improved. No matter the strength or toughness, they are much better than ordinary square pipes, and the corrosion resistance of oxidative environment in engineering construction application. As far as its quality goes, it's easy to tell from the looks.
In the home, galvanized square pipe can be used to make beams, and can also be used to make pillars. If you have a terrace in your home, you want to make a conservatory. Then it is the best idea to choose high-quality galvanized square pipe. Because there is a lot of humidity in the greenhouse, any steel product is afraid of rust, and galvanized square pipe can solve this problem - the anti-corrosion and anti-rust effect is super good!
In engineering decoration, dry hanging stone in exterior wall decoration, support of building passage, galvanized square pipe can play the role of light keel, support frame, anti-corrosion and anti-rust, beautiful appearance, and cost saving, it is simply perfect~
Applicable conditions in the atmosphere, a passivation, dense chromium-rich oxide is formed on the surface of the stainless steel tube to protect the surface and prevent further re-oxidation. This oxide layer is extremely thin, through which the natural luster of the steel surface can be seen, giving stainless steel a unique surface. If the chromium film is destroyed, the chromium in the steel and the oxygen in the atmosphere will regenerate a passive film, which will continue to play a protective role. In some special environments, stainless steel will also fail due to some local corrosion, but unlike carbon steel, stainless steel will not fail due to uniform corrosion, so the corrosion allowance is meaningless for stainless steel pipes.
Post time: Jan-11-2022