expanded) and cold drawn (rolled) square pipe made of stainless steel for corrosion-resistant pipes, structural parts and parts widely used in chemical,Korozar110 galvanized round pipe,KorozarRepresentation of galvanized square pipe, petroleum, light textile, food, machinery and other industries.Hundreds of degrees Celsius, which can save energy.Korozar,After perforation, continuous rolling or rolling. Take off the pipe after sizing. The conical drill bit of the sizing machine rotates into the steel embryo at high speed to form a steel pipe. The inner diameter of the steel pipe is determined by the outer diameter length of the sizing machine bit. After sizing, the steel pipe enters the cooling tower for water spray cooling. After cooling,Korozar250 galvanized steel pipe OD, the steel pipe will be straightened. After straightening, the steel pipe is taken by the beltB. low alloy structural steel C. ordinary structural steel and high-quality steel for specific purposes (including high-quality steel)Popayan,For transportation: water supply, sewage treatment engineering, mud transportation, marine water transportation.Derusting: This is an important process for galvanized square pipes and components before coating, and it is the key to the quality of galvanized square pipes. Thorough derusting can improve the adhesion of antirust paint and prolong the service life of galvanized square pipe.If there is only a single plane weld, the step-by-step back welding shall be adopted from the middle, that is, the arc of the section weld shall be terminated at the section arc.

Derusting: This is an important process for galvanized square pipes and components before coating, and it is the key to the quality of galvanized square pipes. Thorough derusting can improve the adhesion of antirust paint and prolong the service life of galvanized square pipe.Square pipes are mainly used in engineering buildings, glass curtain walls, door and window decoration, steel structures, guardrails, machinery, automobiles, household appliances, shipbuilding, containers, electric power, agricultural construction, agricultural greenhouses, bicycle frames, motorcycle frames, shelves, fitness equipment, leisure and tourism, steel furniture various specifications of oil casing, oil pipes and pipeline pipes, water, gas, sewage, air Heating and other fluid transportation, fire fighting and support, construction and other fields.The pipeline is only subject to chemical pickling, which can remove oxide scale, rust and old coating. Sometimes it can be used as the reprocessing after sand blasting. Although chemical cleaning can make the surface reach a certain cleanliness and roughness, its anchor lines are shallow and easy to pollute the surrounding environment. The square tube shall be submitted for acceptance in batches and the batch rules shall comply with the provisions of corresponding product standards.For more, please check,Square tubes for petroleum cracking (gb-) are furnace tubes, heat exchangers and pipeline square tubes suitable for petroleum refineries.Square tube for automobile half shaft sleeve (gb-) is a high-quality carbon structural steel and alloy structural steel hot-rolled square tube for automobile half shaft sleeve and drive axle housing.According to smelting classification and furnace type, A. open hearth steel: (a) acid open hearth steel; (b) Alkaline open hearth steel.

Generally speaking, square pipe welding has a process: ignition,Cleaning solvent and emulsion can clean the surface of square tube to remove oil, grease, dust, agent and similar organic matter, but it can not remove rust, scale, etc. on the surface of square tube, so it is only used as an auxiliary means in production.The flattening speed of the sample can be ~ mmin.Mechanical engineering, power plants, agricultural and chemical machinery, glass curtain walls, automobile chassis airports, boiler construction, highway railings, housing construction, pressure vessels, oil storage tanks, bridges, power station equipment heavy transportation machinery and other welded structural parts with high load, etc. Process classification: according to the production process, square tubes are divided into hot-rolled seamless square tubes, cold drawn seamless square tubes, seamless square tubes and qb square tubes.KorozarThe local heat release in the welding process of square tube can reduce the heat affected zone, avoid the micro of thermal sensitive materials, and maintain the properties of materials.B. low alloy structural steel C. ordinary structural steel and high-quality steel for specific purposes (including high-quality steel)B. tool steel: (a) carbon tool steel; (b) Alloy tool steel; (c) High speed tool steel.