SSAW Pipe

    1, Chemical composition     In order to improve the uniformity of chemical composition and the purity of steel, reduce the non-metallic inclusions of the tube and improve its distribution, often use the furnace refining equipment for the molten steel Refining, and even the use of electroslag furnace on the tube for remelting refining.     2, Dimensional accuracy and shape     The geometrical dimensions of the seamless steel pipe mainly include the outer diameter of the steel pipe, the wall thickness, the ellipticity, the length, the curvature, the cutting angle of the pipe end, the angle of the groove and the cross section of the blunt edge and the opposite.     3, The surface quality     The standard specifies the "smooth surface" requirements of seamless steel tubes. Common defects are: cracks, hairlines, inside the fold, outside the fold, rolling, within the straight, outside the straight, from the layer, sca...

    A106B seamless steel pipe thread inspection is more complex and divided into the screw thread test and pipe thread test.     1. Collar thread inspection     After the processing of the wire, the internal taper, the inner pitch, the thread height and the concentricity are tested, and the tightness and the comprehensive parameters are checked by the thread plug and the incomplete head. In addition, the thread surface according to API standards for artificial eye inspection.     2. Pipe thread inspection     Tube thread, the external taper, the outer pitch, the thread height of the test, with a thread profile microscope on the thread angle sampling, with the thread ring and smooth ring gauge on the tight distance and comprehensive parameters of the test, in addition to the The thread surface is checked according to the API standard. After the machine is screwed with a plug and not a single-head plug gauge on the screw after t...

    Seamless steel pipe has various standards with different production process. Today, we would list a detailed diagram for customers to choose from.     Seamless steel pipe can be made by material of carbon, alloy and so on. Here is the list for them:     Alloy / Stainless Steel Pipe:     Seamless Pipes：O.D.6-630mm W.T.0.5-100mm L max 24000mm     Welded Pipes：O.D.6-300mm W.T0.5-66mm     ASTM/ASME：A213/SA213 A249/SA249 A268 A312/SA312 A269 A270 A358 A376 A409 A511 A688 A789 A790 A803 A928 A544 A409 A632 A688 A778 A908     Boiler Steel Pipe:     Application: Boiler, Super Heater, Heat Exchanger, Ship Builders, Automotive Industry, Power Generation, Food Industry, Paper Industry, Pharmaceutical Industry, Chemical Industry, Oil and Gas Industry     Standard: ASTM A213, ASTM A312, ASTM A269, ASTM A778, ASTM A790, DIN 17456, DIN 17458, GB/T14976, GB/T13296, JIS G3459, JIS G3463, EN 1021...

    Holoow, billet, slab, billet centrifugal casting can be classified in hot rolled seamless steel pipe. Manufacturer of various steel pipes, would like to have a list for difference of hollow and billet for seamless steel pipe.     Billet: The billet, first processed into the first washing machine, is decreased in front of the ring furnace, and then into the ring furnace.     Hollow: Generally speaking, the furnace for ring blanks in a furnace heated to less than 900 degrees. According to the production process demand, we should have direct heated to hot extrusion temperature (not directly extrusion billet), and then for vertical induction furnace.     Different production process would have different function on quality of each kind of steel pipe. Clients can choose the rightful one for the engineering project.     http://www.xysteelpipe.com/info/The-difference-between-hollow-and-billet-of-seamless-steel-tube-952-1.htm

    Alloy steel pipe is a kind of material used for the carriage of pipeline and oil, and the other is a more fluid transport need to use the alloy steel pipe materials, so we can know this pipeline transport of materials has a very wide range of applications.     The installation of the pipe material is the first step in using process, said alloy steel pipe the material environment adaptability is strong, function and purpose and are very broad, but we still need to pay attention to the installation environment.     After installing the best is to check the installation if there is a problem or its installation is dense enough, after meet this requirement, can smoothly into the use of.     Be installed before installation and use of alloy steel pipe inspection is must be ready before we use the work, and only in this way we can be better to put material into use, and gain more benefit from use.

    Carbon steel is a metal alloy that combines iron and carbon.The various USES of carbon steel depend on the amount of carbon added to the alloy;For example, carbon steel with the lowest carbon content is called forgings, used for fencing and the like.Medium-carbon steel, also called mild steel, is the type of steel that is used for structural purposes in buildings and bridges. High-carbon steel is used for springs and steel wires, while ultra-high carbon steel is called cast iron and is often used to make pots.     There are two types of steel alloy that are typically familiar to the average person: carbon steel and stainless steel. Carbon steel combines iron with carbon, while stainless steel combines iron with chromium. It is easy for most people to identify stainless steel, because the chromium creates a shiny coating over the metal that is reflective and nonporous, making stainless steel simple to clean and decorative. One of the common definitions of carbon...

    Small diameter cold drawn seamless steel pipe is hollow section, round, square, rectangular steel without seams.Seamless steel tube is made of steel ingot or solid tube through capillary tube, and then made by hot rolling, cold rolling or cold plate.     Seamless steel pipe with hollow cross-section, a large number of pipes for the transmission of fluid, steel and round steel and other solid steel compared to the same bending strength, when the weight is light, is an economic section steel, widely used in manufacturing structures And mechanical parts, such as oil drill pipe, drive shafts, bicycle frames and steel scaffolding used in construction.     Anaerobic bright annealing is in the anaerobic furnace, usually in the nitrogen environment, heating, cooling, baked at 300 degrees, so to maintain the original color of the annealing process.     Anaerobic annealing, the steel surface without oxide. Carbon dioxide annealing. There are grea...