LSAW Steel Pipe

　　 Galvanized Steel Pipe Solvent Treatment 　　1, the steel pipe into the solvent tank, the tape to relax all the steel immersed in the solvent, does not allow the steel pipe surface exposed solvent surface. Such as steel pipe at both ends do not take bubbles so far, and then lifting the side of the pipe vibration up, lifting the steel pipe control solvent into the drying rack. 　　2, steel pipe in the solvent treatment process, the tilt angle of steel pipe is not greater than 15 °. 　　3, the pipe immersed in the solvent time of 60 to 120 seconds, on duty back to the tube soak 3 to 5 minutes, successor to the plating tube soak 5 to 10 minutes. 　　4, solvent temperature: keep the solvent clean at room temperature. 　　5, the solvent-treated steel pipe, do not stick to other dirt, do not pour Sheung Shui, placed in the drying platform balance; placed on the drying bench steel pipe, pipe is not allowed to go to the top, such as must be up , The feet must be coated with ammonium chlorid...

　　Before choosing which type of metal to use for an industrial project, the first thing that you should consider is the magnitude and scale of the task, what type of liquid or gas the pipes will be carrying and the longevity of structure. Once that has been established, you can then answer questions to what type of metal to use for the piping. 　　For example, due to its strength and versatility, steel is one of the most popular materials used for pipe and pipe fittings. Even better, different material, like carbon or chrome, can be added to steel to obtain a specific desired effect. Here are a few reasons why it may be beneficial to invest in carbon steel pipe fittings and valves for your next commercial project. 　　1. Super Strength 　　Because of its strength and durability, steel has been one of the most commonly used materials for industrial piping and other types of construction. However, with the addition of carbon to the already strong metal, it has the ability to turn into a ...

　　Hot Dip Galvanizing Drying Process 　　1, the solvent treatment of qualified steel tube placed on the drying receiving platform, the steel side on the same side of the zinc pot on the front side and the second magnetic roller at right angles to the front; bent large tube on the back Or straightened on the receiving frame. 　　2, drying kang main role is to steel surface moisture drying, on the other hand is to enhance the temperature of the steel pipe itself, to prevent the sputtering of zinc hurt people, not take away the heat inside the zinc pot to promote zinc-iron alloy layer to speed up the generation . 　　3, drying kang temperature of 80 ℃ ~ 180 ℃, steel pipe drying time of 3 to 7 minutes, but also according to the specifications of steel pipe, wall thickness to master the different drying temperature; drying workers at any time to check the dryness of steel to prevent time Insufficient zinc spray into the liquid zinc injury; drying not over-temperature, to prevent the solvent...

　　The advantages of hot-dip galvanizing 　　1, the processing cost is low: the cost of hot-dip galvanized anti-rust coating than other low cost of paint; 　　2, durable: in the suburban environment, the standard hot-dip galvanized anti-rust thickness can be maintained for more than 50 years without having to repair; in urban or coastal areas, the standard hot dip galvanized layer can be maintained for 20 years without repair ; 　　3, the reliability is good: galvanized steel pipe and steel is metallurgical combination, as part of the steel surface, so the durability of the coating is more reliable; 　　4, the coating toughness: galvanized layer to form a special metallurgical structure, this structure can withstand the mechanical damage during transport and use; 　　5, a comprehensive protection: plating of each part can be plated with zinc, even in the depression, sharp corners and hidden place can be fully protected; 　　6, save time and effort: galvanizing process than other coatin...

　　 Hot Dip Galvanized Products 　　With the development of industry, hot-dip galvanized products have been applied to many areas, the advantages of hot-dip galvanizing corrosion is a long time to adapt to the environment has been widely popular anti-corrosion treatment. Widely used with the power tower, communications tower, railway, road protection, road poles, marine components, building steel structures, substation ancillary facilities, light industry. 　　Hot galvanized anti-corrosion long years, but in different environments not the same as the anti-corrosion environment: heavy industrial zone 13 years, 50 years of the ocean, the outskirts of 104 years, the city 30 years. 　　Hot dip galvanizing principle: the iron pieces clean, and then solvent treatment, drying, immersed in zinc liquid, iron and molten zinc reaction to form an alloying zinc layer, the process is: degreasing - washing - pickling - Assisted plating - drying - hot dip galvanizing - separation - cooling passivation...

　　Welding is critical to the quality of high-frequency welded pipes, and the frequency of high frequency welding has a great impact on welding, because the high-frequency's frequency affects the distribution of current within the steel plate. 　　The impact of high or low selected frequency of welding mainly acts on affecting the size of the weld heat affected zone. From the welding efficiency, pipe manufacturers should use a higher frequency as far as possible. 100KHz high-frequency current can penetrate 0.1mm ferrite steel, but 400KHz can only penetrate 0.04mm, which means that the current density distribution on the surface of the steel plate of the latter is nearly 2.5 times higher than the former. 　　In the production practice, pipe manufacturers generally choose 350KHz ~ 450KHz frequency when welding carbon steel material. When welding alloy steel material, and welding more than 10mm thick steel plate, pipe manufacturers can use 50KHz ~ 150KHz low frequency, because the skin...

　　Steel pipe has a variety of production processes. High-frequency welding technology is one of them, it usually used by pipe manufacturers to produce ERW steel pipe . Actually, high-frequency welding can be divided into two ways, resistance welding and IWinduction welding. 　　What is resistance welding? 　　The resistance welding is carried out by using a pair of copper electrodes to contact on both sides of the welded steel pipe, induction current penetration is good, the two effects of high frequency current are maximized using since the copper electrode directly contact with the steel plate. The welding efficiency of the resistance welding is high and the power consumption is low, so it is widely used in the production of high speed and low precision pipe. And in the production of special thick steel pipe, it is also necessary to use resistance welding. 　　But there are two shortcomings in resistance welding: first, copper electrode is in touch with steel plate, so it will wear q...