Spiral steel pipe is widely used in the welding technology of double-sided submerged arc welding in the area around the arc and is now widely used. It also provides the necessary conditions for the delivery of spiral steel pipes, so that the production time of large spiral steel pipes is guaranteed, so it is still widely used. It is also necessary to clean and dry the weld surface and flux of spiral welded steel pipes. Steel plate surface treatment. In order to avoid unwinding, leveling, and other debris such as iron oxide scale entering the molding process, a board surface cleaning device should be installed. Hot crack. In submerged arc welding, hot cracks can occur in the weld bead, which is easy to crack at the arc starting and arc extinguishing craters. Each steel tube undergoes a hydrostatic pressure test, and the pressure is radially sealed. The reason why the temperature of the end of the q235B spiral steel pipe drops is that the heating power frequency affects the temperature of the end of the steel pipe. Multiple sensors are added continuously. When the steel pipe is heated to a temperature above the Curie point, the temperature of the end is prone to change. It is a thin steel pipe in the heating pipe wall. Epoxy resin coatings are mainly made up of epoxy resins and high-shielding anti-rust pigments, fillers, thixotropic agents, anti-rust additives, curing agents and mixed solvents. Due to the difference in molecular weight and ratio of the epoxy resin used, and the different additives, the performance and use of the obtained products are also different. Epoxy resin coating has unique and excellent anti-corrosion performance. Excellent corrosion resistance. Since the molecular chain of the epoxy resin film contains very stable carbon-carbon bonds, ether bonds and benzene rings, the structure is dense, the shielding property is good, the penetration resistance after curing is excellent, it has water resistance, salt spray resistance, Oil resistance, and excellent chemical resistance; characteristics have good adhesion. Because the polar hydroxyl group contained in the coating film molecule and the phase critical plane generate gravity. For example, it reacts with free bonds on the metal surface to form strong chemical element bonds, thus greatly enhancing the adhesion of the coating film and expanding the adaptability to the substrate.
We have excellent physical and mechanical properties and outstanding chemical resistance, weather resistance and high adhesion. Because it is rarely affected by sunlight, rain and corrosive atmosphere, it is suitable for outdoor applications. Widely used in the protection and decoration of metal, ABS plastic, furniture, vehicles, ships, outdoor facilities. IPN is the abbreviation of "interpenetrating polymer networks" in English. Chinese translation for interpenetrating network. Interpenetrating polymer network is a new type of polymer anti-corrosion coating researched and developed in the past two decades. It has the outstanding properties of unusual polymer materials. It is one of the hot spots in the development of polymer materials today. Reputation. IPN series anti-corrosion coating is a castor oil type polyurethane and poly-substituted ethylene interpenetrating polymer copolymer in the process of mixing and curing the coating. The rubber network of the former and the plastic network of the latter penetrate, penetrate and firmly adhere to the surface of the object to be coated.
IPN8710 anticorrosive spiral steel pipe topcoat: composed of epoxy, rubber resin modified, non-toxic anti-rust pigment filler, additives, etc.. Excellent chemical resistance, non-toxic, anti-microbial erosion. Inner wall of water pipeline, oil pipeline, Anti-corrosion of gas pipes, sewage pipes, etc. IPN8710-composed of polyurethane polyethylene, modified epoxy resin, non-toxic anti-rust pigment filler, additives, etc., cured at room temperature to form an interpenetrating network, the coating film structure is dense. Acid resistance, excellent corrosion resistance, strong adhesion. IPN8710-2A: It is composed of epoxy resin, rubber resin modified, non-toxic, anti-rust paint, additives, etc. Excellent chemical resistance, non-toxic, anti-microbial erosion. Since IPN was put into production in the year, it has adopted different resins, pigments and fillers to implement technical improvements to resist different corrosive media. It has developed water pipeline anticorrosive coatings, chemical atmospheric anticorrosive coatings, gas cabinets, pipe anticorrosive coatings, oil storage tanks, oil pipelines The general performance of this series of coatings, such as anti-corrosion coatings, is as follows: 1. Simple surface treatment; excellent anti-corrosion performance; reasonable price-performance ratio.
Epoxy coal pitch anticorrosive spiral steel pipe is what we often say a few cloths and a few oils, the common one is two cloths, three cloths and two oils, five steps and three oils, and seven cloths and four oils. The components of epoxy coal tar pitch anticorrosive spiral steel pipe are epoxy coal tar pitch primer and topcoat. They all use epoxy resin and coal tar pitch as the main film-forming materials, and add various anti-rust pigments, insulating fillers, toughening agents, Made of leveling agent, thinner, anti-settling agent, etc. Appearance: Primer component A iron red, component B black, topcoat are black. It has excellent resistance to chemical media corrosion and good physical and mechanical properties, good adhesion, tough coating, and has excellent electrical insulation and penetration resistance, resistance to stray current and anti-microbial corrosion, after film formation, Can reduce the number of construction roads. The main executive standards are SY/T 0447-96 "Technical Standard for Epoxy Coal Asphalt Anti-corrosion Layer of Buried Steel Pipeline" and SY/T 0457-2000 "Technical Standard for Anti-corrosion Layer of Liquid Epoxy Coating for Steel Pipeline". It is mainly used for anticorrosion of the outer walls of buried or underwater steel oil, gas, water, and heating pipelines. It is also suitable for various types of steel structures, docks, ships, sluices, gas storage tanks, oil refining and chemical engineering, and concrete pipes. , Sewage pond, roof waterproof layer, toilet, basement and other concrete structure waterproof and anti-leakage.  1. Three-layer polyethylene (3PE) steel pipe anticorrosion for petroleum and natural gas, and two-layer polyethylene (2PE) steel pipe anticorrosion.