steel pipe

　　 Carbon steel pipes have countless properties that make them ideal for various applications. They are highly resistant, malleable and inexpensive. Compared to PVC, they are much stronger and less expensive than stainless steel. In addition, they have a high resistance to pressure. 　　Types 　　Seamless steel tubes: Seamless carbon steel tubes are used for steel-seam tubes mainly for the conduction of fluids and gases. In addition, they are applied in various industries such as, chemical industry, petrochemical, fishing, mining, energy sector, among other industries. 　　Steel tubes with seam: Carbon steel tubes with seam are used to transport structures, as well as fluids and liquids (water, steam and gas). 　　Main applications 　　These pipes are ideal for the conduction of fluids, such as water, gas, steam, air, oil, oil, petroleum products, treated waters, among others. In addition, they are also used as structural support for industrial buildings and roads. 　　Seamless-tubes ...

　　The term “pipe end” refers to how the pipe is finished at its extremities. 　　The common pipe end types are: 　　Plain ends (PE): plain ends are generally used for smaller diameters and require slip-on flanges and socket weld fittings. Plain ends are also common for stainless, duplex and nickel-alloy pipes. 　　Beveled ends (BE): this is the most common pipe end type (beveled end pipes are joined by welding). 　　Threaded ends (TE): threaded ends (which are generally NPT as per ASME B1.20.1 for petrochemical pipes) require threaded fittings and flanges and are used for smaller size pipelines or gas lines. 　　Threaded and coupled ends (T&C), generally used for gas distribution. 　　Grooved ends (example Victaulic pipes): these are pipes that allow a quick connection, used for non-critical applications.

　　The overall heat treatment process and overall heat treatment of the seamless square tube are characterized in that there is no temperature difference in the pipe wall during the treatment process, no residual stress is generated, the heating and holding time can be adjusted, and the complicated heat treatment specification can be adapted, and a computer can also be used. Automatic control is carried out, but the roller hearth furnace equipment is complicated and the operation cost is high. Seamless square tube overall heat treatment: can be divided into online heat treatment and offline heat treatment. 　　First, online heat treatment: after the seamless square tube is welded, use two or more medium frequency annular induction heating devices to heat the whole tube, and heat it to the normal temperature of 900-920°C in a short time. After a certain period of time, the air is cooled to 400°C or less and then cooled normally, so that the whole tube structure is improved. The seamless ...

　　The world of carbon steels can be challenging to wrap your head around. There are many different options to choose from, and each type of steel has different benefits. The main differentiating factor is the amount of carbon that is mixed with iron during production. Other materials, mainly metals, can be added to change the physical properties. Notably, chromium is added to form stainless steel, while other big picture, there are three distinctions between carbon steels: low, medium, and high. 　　 Low carbon steel 　　Low carbon steels such as 302, 304 or 316 grades of stainless are typically used in applications which require high degrees of corrosion resistance but do not require a hardened surface. The carbon content of these steels typically range between 0.03-0.08%, and consumers typically use these grades of stainless (often without thinking about it) in kitchen equipment, silverware or almost any grade of un-plated steel used in food preparation. It’s great because it can su...

　　 Pipe external corrosion 　　1, Single FBE corrosion (FBE) Single-layerFBE Coating Epoxy powder layer because of its excellent corrosion resistance,insulation resistance and long service life and become an advanced anti-corrosion coating of the outer pipe. Sub-ordinary nature (thickness: 300 ~ 400um) andenhanced (thickness: 400 ~ 500um) two kinds. 　　2, Double FBE corrosion (2FBE) 　　Double epoxy powder coated outer coating is a composite structure,consisting of anti-corrosion epoxy powder primer and epoxy powder resistant tome chanical damage the surface layer of a coating film is completed. Normal sex(thickness ≥ 620um); enhanced (thickness ≥ 800um) 　　3, Two polyethylene / polypropylene anticorrosion (2PE/2PP) 　　Two polyethylene / polypropylene layer with good corrosion resistance,insulation resistance, long service life and resistance to mechanical damage. Sub-normal and enhanced thickness according to pipe size varies: Common Min1.8mm; enhanced minimum 2.5mm. 　　4, Three l...

　　Longitudinal seam 　　It is the oldest manufacturing process, which starts from a sheet of sheet metal (which is obtained by winding a steel coil until the desired thickness is achieved) cut according to the width that corresponds to the size of the tube that will be produced. This sheet is folded by rollers to join the ends longitudinally to obtain the shape of the tube. Depending on the separation of the rollers, different curves and therefore different tube diameters are obtained. Welding seals this joint straight to close the cylinder in a chemically neutral environment. 　　Helical welding (or spiral) 　　This tube manufacturing process follows the same methodology as that of the longitudinally welded tube , with the difference that the weld spirals the entire length of the tube diameter as if it were threaded, instead of straight in the longitudinal joint of the sheet. 　　To hide the weld, a hot treatment process can be applied to the welded tube to forge it, and then pass thr...

　　 Seamless steel pipe for geological use: Steel pipe for geological drilling (YB235-70) is a steel pipe used for core drilling by the geological department. It is a hollow section.Long strip of steel without seams around. Steel pipes have a hollow section and are used in large quantities as pipes for transporting fluids, such as pipes for transporting oil, natural gas, gas, water and certain solid materials. According to the use, it can be divided into drill pipe, drill collar, core pipe, casing and sedimentation pipe. 　　Geological pipe use drill pipe: A connecting rod that connects a drill bit and transmits power in a drilling tool. The usual components of the drill string are: drill bits, drill collars, drill pipes, stabilizers, special joints and kelly bars. The basic functions of the drill string are: (1) starting the drill bit; (2) applying the drilling pressure; (3) transmitting the power; (4) conveying the drilling fluid; and (5) performing special operations: squeezing the ...

　　The galvanizing process is a technique that is used to protect steel from corrosion for more than 250 years. Corrosion is caused by an inherent tendency of metals when subjected to air and moisture, which tend to return to their original earthly form, usually a state of mineral. They do it through a chemical or electrochemical reaction with the environment. 　　Galvanizing consists of the immersion of steel parts in molten zinc to protect them from corrosion and enhance their mechanical strength against shocks and abrasion. Many confuse galvanizing with zinc plating, and in fact many sources speak of them as synonyms, but these are different techniques, determined by the use that will be given to the material, and that is why they are governed by different UNE standards. 　　Galvanizing process and zinc plating process 　　The galvanizing process can be hot, immersion or fire. It consists of introducing molten zinc steel parts, at an approximate temperature of 450 ° C until a 7-42 m...

　　ERW pipe adopts cold-bending forming, and the sizing is completed by 0.6% reduction. The process temperature is basically constant at room temperature, so the outer diameter control is accurate and the fluctuation range is small, which is good for eliminating black leather buckle. 　　The strength index of erw pipe is in the best state, and the plasticity index is higher than the standard 33.3%. The reason is that the performance of the raw material of the erw steel pipe-hot rolled coil is guaranteed by means of microalloying smelting, refining outside the furnace and controlled cooling and rolling. 　　The raw material of the erw steel pipe-hot-rolled coil is highly controlled in the rolling process, and the precision of each part of the coil can be ensured. 　　The raw material of erw steel pipe - hot-rolled coil is made of wide and thick continuous casting billet, with thick fine-grained surface solidified layer, no columnar crystal area and shrinkage and looseness, small composit...

　　Pipe fittings play an important role in the connection, controlling, direction changing, streaming components collectively sealed and supporting. Carbon steel pipe fittings are main auxiliary products for the steel pipe. The key products are carbon steel elbow, flanges, steel cap, steel tee, carbon steel pipe reducer. The standards include national standard, American standard and DIN. 　　Carbon steel pipe fittings also called pressure pipe fittings. It is usually divided into three types: butt class pipe fittings, socket welded pipe fittings and threaded pipe fittings. In pipe joints system, you need various sizes of steel pipe fittings due to the different pipe sizes. For example, the threaded pipe fitting is necessary for straight tube or tube section connecting. Because of the double characteristics of the tubes and mechanical elements, all pipe should belongs to the steel pipe fittings after finished the deep process of steel pipe. 　　The sides of the steel pipe are painted to...