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...

    High-quality seamless steel pipe is a hollow section, the surrounding no seam of the long steel. The steel pipe has a hollow section, a large number of pipes used to transport fluid, such as the transmission of oil, natural gas, gas, water and some solid materials such as pipeline. Steel and round steel and other solid steel compared to the same bending strength, the weight is light, is an economic section of steel, widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipe, car drive shaft, bicycle Racks and steel scaffolds for construction purposes.     The use of steel pipe manufacturing ring parts, can improve the utilization of materials, simplify the manufacturing process, saving materials and processing time, such as rolling bearing rings, jack sets, etc., has been widely used to manufacture steel. Steel pipe or a variety of conventional weapons indispensable materials, barrels, barrels and so on to steel to manufact...

    Welded steel pipe is bent with steel or steel plate is round, square and other shapes and then welded into the surface of the seam with the steel pipe. Common types of welded steel pipe are the following:     General pipe, used to transport low-pressure fluid, easy to weld the other soft steel manufacturing. Steel pipe to pipe and thick steel pipe specifications with the nominal mouth of the water pressure, bending, flattening and other experiments, the surface quality has certain requirements, usually the length of the delivery of 4-10m is actually different, the pipe according to the provisions of the wall thickness Two kinds of steel, according to the thread and no thread two.     Roller, for belt conveyor roller welding steel pipe, the general water pressure and flattening test.     Metric welded pipe, specifications with a seamless tube form, with ordinary carbon steel, high quality carbon steel or Cape can be low-alloy steel tropi...

    1. Seamless steel pipe for structural use (GB / T8162-1999): Mainly used in general structure, mechanical structure.     2. Seamless steel pipe for conveying fluid (GB / T8163-1999): Mainly used for conveying piping. For example: central air conditioning, cold storage, gas, fire engineering.     3. Low and medium pressure boiler seamless steel pipe (GB3087-1999): Mainly applicable to low, medium pressure boiler superheated steam pipe, boiling water pipes and other heat pipe fittings.     4. Hydraulic and pneumatic cylinder with precision diameter seamless steel pipe (GB / T8713-1988): mainly used in the manufacture of hydraulic and pneumatic cylinder and other internal and external surface roughness requirements are high, inside and outside the size of the requirements of precision fittings. For example: jack, shock absorber, motor shell, cylinder, injection molding machinery.     5. Cold-rolled seamless profiled steel pipe (...

    The consumption of oil well pipe accounts for about 21% to 25% of the total consumption of seamless steel pipe. 90 years of consumption are between 75 to 90 million t. 1997 apparent consumption of 800,000 t, 1998 to 920,000 t. 1998 domestic oil well pipe 660000 t, the domestic market share of 72%. 2000 is estimated to consume less than 1 million t. Production capacity and apparent consumption were essentially flat. Due to the difficulties in the supply of high-performance products, the actual production is insufficient, so still need to import each year.     The required range of specifications is available. But the oil casing steel level is only J55, N80, P110, which J55, N80 accounted for more than 85%, from the actual need for more high steel level has a greater distance.     Oil industry, technological progress and focus on economic efficiency, to promote the casing to the small diameter (Φ139.7mm) transfer. Sometimes without surface casing, tec...

    Modern power devices that operate with high efficiency require the use of suitable steel tubes, to guarantee their long-term, safe and trouble-free operation. Steel tubes are important structural materials used in these facilities. These tubes are often referred to as boiler tubes.     Pressure equipment made from tubes for pressure purposes have to comply following European regulations:     1. Directive of the European Parliament and the Council 2014/68/EV (before PED 9723EC) applicable to specified pressure equipment. Pressure equipment within the meaning of this Directive withstand max. allowable pressure (PS) greater than 0.5 bar, and it is a pressure above the normal atmospheric pressure, i.e. excess pressure.     2. According to the Directive PED 2014/68/EV pressure equipment is divided into three types, which are subject to the harmonized EN standards:     2.1 Steam and hot water boilers - EN 12952 and EN 12953 ...