Generally, chemical and electrolytic methods are usedPut the pig iron for steelmaking into the steelmaking furnace according to the specified process to obtain steel. The products of steel include ingots, continuous casting billets and various steel castings made of straight square tubes. Generally speaking, steel refers to the steel rolled into various square tubes. Square tube steel belongs to ferrous metal,Auorburg65 hot dip galvanized pipe, but steel is not completely equal to ferrous metal.Auorburg,Hardness test is to determine the hardness of seamless qb square pipe by slowly pressing a hard indenter on the sample surface according to the specified conditions, and then testing the indentation depth or size.Carbon steel classified by chemical composition: square tube A. low carbon steel (C & le; .%); b. Medium carbon steel (C & le; . ~ .%); c. High carbon steel (C & le; .%).Monsanto, expanded) and cold drawn (rolled) square tube made of stainless steel for fluid transportation.Functional index analysis of qb square tube - angular plasticity refers to the power of plastic deformation (permanent deformation) without destruction of qb square tube data under load.: it refers to the processing of square tube, which places metal in a closed Jane and applies pressure at the end to extrude the metal from the specified die hole to obtain finished products with the same shape and size. It is mostly used to produce non-ferrous metal materials. Square tube ferrous metal, steel and non-ferrous metal. Before introducing the classification of steel, square tube steel and non-ferrous metal.

The second is the pickling of the square pipe. Both chemical and electrolytic methods are used when pickling the square pipe. These two methods can remove the oxide skin of the square pipe.The inner and outer walls of the pipe shall retain the original surface without any processing.The reason why it is divided into two types is that chemical cleaning can only clean the surface very thoroughly, and it is difficult to achieve the desired results in some fine cracks.average method,Hundreds of degrees Celsius, which can save energy.With the progress of the times and the faster and faster economic development, the places where large-diameter seamless square tubes are used are becoming more and more popularMain uses of square tube: square tube is mainly used in tap water engineering, petrochemical industry, chemical industry,AuorburgQ235A square tube,Auorburg20 galvanized square pipe, electric power industry, agricultural irrigation and urban construction. It is one of the key products developed.

Because the green billet can be pressed into any shape, it is easy to weld the square tube into difficult products.Quality documents,Cold drawn or cold rolled precision square tube (gb-) is a cold drawn or cold rolled precision square tube with high dimensional accuracy and good surface finish for mechanical structure and hydraulic equipment. The selection of precision square mechanical structure or hydraulic equipment can greatly save machining hours improve material rate and improve product quality.Cold formed hollow section steel (American Standard) for cold pressed QB square tube (national standard) structure carbon steel cold-formed circular section and pressure welded QB square tube and seamless QB square tube (European standard) non alloy fine grain cold formed welded hollow structural profile (Japanese standard) angle steel QB square tube for general structure galvanized qb square tube for low pressure fluid transmission, Standard No.: gbt-. Representative materials: qqbqb, etc. it is mainly used to transport water, gas, air, oil and water or steam. It is a special product manufacturing enterprise integrating R & D, and service. It has long been a professional square tube, galvanized square tube and galvanized tube. Its purpose is only limited to general low-pressure fluid.Principle of cold drawing strengthening: the lattice defects of steel increase during plastic deformation seamless square tube, and the serious distortion of defect lattice will hinder the progress and slip of lattice, so the yield point of steel increases and the plasticity and toughness decrease. Due to the internal stress in plastic deformation, the modulus of steel decreases. The cold drawn reinforcement is stored at room temperature for ~ d or heated to ~ ℃ and maintained for a fixed time. This process is called aging treatment.Auorburg,Hundreds of degrees Celsius, which can save energy.Purpose of square tube the purpose of square tube includes construction, machinery, steel construction and other projects, shipbuilding, solar power generation support, steel structure engineering, electric products ( pieces)The appearance of fake and inferior square tubes often has pitting. Pockmarked surface is an irregular uneven defect on the surface of square lead pipe due to serious wear of rolling groove. Due to the pursuit of profit by fake and shoddy square tube manufacturers the rolling of rolling groove often exceeds the standard.