WittenGalvanized steel pipe DN20Delivery at any time

There are many ways of ignition, such as arc, electric spark, high-temperature furnace, electron beam, laser, high-temperature radiation, microwave, chemical furnace, etc.The square tube for fluid transportation (gbt-) is a general square tube for transporting water, oil, gas and other fluids.Witten,Square pipe is the name of square pipe, that is, steel pipe with equal side length. It is made of rolled strip steel after process treatment. Generally, the strip steel is unpacked, leveled,WittenGalvanized grooved steel pipe, crimped and welded to form a round pipe,WittenCold rolled square tube, then rolled into a square pipe from the round pipe, and then cut into the required length. Usually pieces per bag.Pull square tube:Chaiyaphum,Solution treatment and nondestructive testing sand rolling treatment and sand blasting treatment many manufacturers in the market do not do solution treatment and % penetration nondestructive testing and many of them use sand blasting instead of sand rolling. After these steps are omitted, the cost is greatly reduced.The strength, plasticity and hardness discussed above in fatigue QB are the indicators of the mechanical properties of metals under static load. In fact, many machine parts work under cyclic load, under which fatigue will occur.Derusting grade for the construction process of epoxy, ethylene, phenolic and other coatings commonly used for square pipes, the surface of square pipes is generally required to reach near white grade (SA). Practice has proved that almost all oxide scale, rust and other dirt can be removed by using this derusting grade, and the depth of anchor grain can reach ~ & mu; m, which fully meets the requirements of adhesion between layer and square pipe The shot derusting process can meet the technical conditions of near white level (SA) with low operation cost and stable and reliable quality.

Classification of square pipe material square pipe is divided into ordinary carbon steel square pipe and low alloy square pipe according to material. Ordinary carbon steel is divided into Q Q q SS, # steel, # steel,WittenGalvanized square pipe price meter, etc; Low alloy steels are divided into q Mn, Q, St-, etc.Square pipe is a square steel pipe cold drawn from seamless steel pipe, which is not a straight qb square pipe, and qb square pipe, also known as welded pipe, is a square pipe welded by steel plate or strip steel after crimping. Qb square tube has the advantages of simple production process, high production efficiency, many varieties and specifications and less equipment. The commonly used materials are QA and QC.Fake and shoddy square tubes are easy to scratch, because the equipment of fake and shoddy material manufacturers is simple and easy to produce burrs and scratch the surface of square tubes. Deep scratches reduce the strength of square tubes.Job description,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.Hardness QB square hardness is a pointer to measure the hardness and softness of metal materials. At present, the hardness method is commonly used to measure the hardness in production. It uses the indenter with fixed geometry to measure the hardness value of the metal material surface tested under fixed load according to the degree of hardness.High density may not be obtained by simple pressurization, and insulation shall be carried out at the same time.

Large diameter qb square tube production standard classification square tube is divided according to production standard: national standard square tube, Japanese standard square tube, European standard square tube and non-standard square tube.analysis American standard square tube, Rockwell angle (HRC) and Vickers angle (HV) of qb square tube. Angle is a gauge needle to weigh the soft and hard level of metal data. The angle method is rarely used to determine the internal angle in the current life. It uses the metal data surface tested under the fixed load of the indenter with a certain number and shape to determine its angle value according to the level of the object.High productivity of square tube: the efficiency of cold production of mechanical parts is very high, especially for parts with large batch. Cold production can be several times, several times or even hundreds of times higher than cutting. For example, the use of cold pin for automobile is twice higher than that of cutting. At present, cold pin automata is used to improve productivity. The productivity of table cooling automata is equivalent to that of ordinary lathes or shaft self-propelled machines.Spraying (throwing) derusting spraying (throwing) derusting is that the high-power motor drives the spraying (throwing) blade to rotate at high speed so that the steel sand, steel shot, iron wire section, minerals and other abrasives can be sprayed (thrown) on the surface of the square tube under the action of centrifugal force, which can not only completely remove rust, oxides and dirt, but also the square tube under the violent impact and force of abrasives It can also achieve the required uniform roughness.Witten,Pull square tube:Superior square tubular steel (both P and s ≤ .%)Square tube has a wide range of application fields. Its main field is the construction industry, which promotes the development of economic construction. Because the production process of square tube hole is different, the production design of square tube hole is also different. Next, I will introduce in detail the types of tube hole design below.