The shape of pipe end stainless steel pipe can be divided into smooth pipe and threaded pipe (threaded steel pipe) according to the state of pipe end. Threading pipe can also be divided into ordinary threading pipe (pipe for conveying low pressure such as water and gas, which is connected by ordinary cylindrical or conical pipe thread) and special threaded pipe (pipe for petroleum and geological drilling, which is connected by special thread for important threading pipe). For some special pipes, in order to make up for the impact of thread on the strength of pipe end, the pipe end is usually thickened before threading (inner thickening outer thickening or inner and outer thickening).AUSTENITIC FERRITIC duplex stainless steel. It has the advantages of both austenitic and ferritic stainless steel, and has superplasticity. Martensitic stainless steel. High strength, but poor plasticity and weldability.Nyasvizh,Compared with traditional steel, stainless steel can not only ensure high strength and weight ratio, but also have good plasticity, toughness, formability and weldability. It is the first choice for car frame. Stainless steel with superior performance can create cars with light weight, strong resistance, high safety and long service life. Such frames can be recycled and reused. It can not only save costs, but also save resources. And some other auto parts are also made of stainless steel. Stainless steel has a great potential market in the whole automobile industry!Model & mdash; General model; stainless steel. The GB brand is CrNi.Dagupan,First of all, let's understand what stainless steel is. Generally speaking, steel that will not rust is called stainless steel, steel resistant to weak corrosive media such as air, steam and water and chemical corrosive media such as acid alkali and salt. Also known as stainless acid resistant steel. In practical application,NyasvizhStainless steel strapping, while the steel resistant to chemical medium is called acid resistant steel. Due to the difference in chemical composition between the two, the former is not necessarily resistant to chemical medium corrosion, while the latter is generally stainless. The corrosion resistance of stainless steel depends on the alloying elements contained in the steel. Chromium is the basic element for stainless steel to obtain corrosion resistance. When the chromium content in the steel reaches about %, chromium reacts with oxygen in the corrosive medium to form a thin oxide film (self passivation film) on the steel surface, which can prevent further corrosion of the steel matrix. In addition to chromium, the commonly used alloy elements include nickel, molybdenum titanium, niobium, copper, nitrogen, etc. so as to meet the requirements of various uses on the microstructure and properties of stainless steel.No solution treatment. The alloy elements do not dissolve into the matrix, resulting in low alloy content and poor corrosion resistance.There are three main reasons for oxidation of stainless steel: production process, which is one of the reasons for oxidation of steel products. In terms of production process and product characteristics, forming a thin oxide film on the product surface is the basic process to avoid oxidation, and it is also one of the main characteristics of steel products different from other steel products. It is specialized in products, renewable resources business and business package Including: stainless steel plate, stainless steel coil, stainless steel belt and stainless steel pipe. However, when the oxide film is incomplete and discontinuous due to insufficient or negligent production process, the oxygen in the air will directly react with some elements in the product, resulting in the appearance of oxidation of the product.

When water-soluble paper is used to block the ventilation, the ventilation pipe shall be pulled out quickly at the later sealing link, and the residual argon inside shall be used for protection, so as to quickly finish the bottom and seal the mouth.At low temperature, the quality of professional stainless steel plate, coil, strip and tube is guaranteed. The company is professional, timely and cost-effective. It has become the first choice brand for many wire products. Welcome to buy! Ferritic stainless steel tubes have low-temperature brittleness like carbon steel, ferritic or martensitic stainless steels have low-temperature brittleness Austenitic stainless steel or nickel base alloy does not show low temperature brittleness. Sus (Cr), SUS of ferritic stainless steel pipe (cr) and others show a sharp drop in impact value at low temperature. Therefore, it is necessary to pay special attention when using at low temperature. As a way to improve the impact toughness of ferritic series stainless steel, high purification process can be considered. With the help of grade C and N, when the embrittlement temperature is improved in the range of - ℃ to - ℃, it is possible to use it in freezing related projects Suslx (cr Ti, Nb LC) and susl (cr Mo Ti, Nb LC) have been applied to frozen shells. Ferritic stainless steel has a body centered cubic structure. When the material properties become weak, sharp cracks will expand rapidly and cause brittleness. Austenitic stainless steel will not produce brittleness because it has a face centered cubic structure. Austrian stainless steel SUSL (cr-ni LC) is used And SUSL (cr-ni-mo-lc) show that they still have superior impact characteristics at low temperature. However, pay attention to the precipitation of ferrite or martensite due to processing, and the tendency of embrittlement due to sensitization and carbide or & sigma; equal heterogeneous precipitation.W = (outer diameter wall thickness) & times; wall thickness & times; . = KGM (weight per meter).equipment maintenance ,Continuous casting shall be adopted for stainless steel pipe fittings, so as to improve the comprehensive yield, and cooperate with out of furnace refining, which significantly improves the production efficiency, omits the blank opening process and saves a lot of energy consumption.Austenitic stainless steel. It contains more than % chromium, about % nickel and a small amount of molybdenum, titanium, it can be divided into oil well pipe (casing, oil pipe and drill pipe), pipeline pipe, boiler pipe, mechanical structure pipe, hydraulic prop pipe, gas cylinder pipe,NyasvizhWall thickness of stainless steel pipe, geological pipe, chemical pipe (high-pressure chemical fertilizer pipe, petroleum cracking pipe) and marine pipe.

Meet the needs of architects and structural designers.Quality documents,In the building water supply pipe system due to the end of the glorious history of galvanized steel pipe, various new plastic pipes and composite pipes have developed rapidly, but various pipes still have some deficiencies in varying degrees, which are far from fully meeting the needs of water supply pipe system and the national requirements for drinking water and related water quality. Therefore, relevant experts: building water supply pipes will eventually return to the era of metal pipes. According to foreign application experience, stainless steel pipe is recognized as one of the pipes with good comprehensive performance in metal pipe.Stainless steel has the ability of atmospheric oxidation, that is, it also has the ability of corrosion resistance in the medium containing acid, alkali and salt, that is, corrosion resistance. However, its corrosion resistance changes with its own chemical composition, mutual state, service conditions and environmental medium type. For example, has absolutely excellent corrosion resistance in dry and clean atmosphere, but it is moved to In coastal areas, in the sea fog with a lot of salt, it will soon rust, while stainless steel performs well. Therefore, not any kind of stainless steel can resist corrosion and rust at any timeW = (outer diameter wall thickness) & times; wall thickness & times; . = KGM (weight per meter).Nyasvizh,Austenitic stainless steel is generally used for manufacturing and manufacturing chemical equipment components, low-temperature equipment components in refrigeration industry, and can be used as stainless steel spring and clock spring after deformation strengthening. the responsibility of the calender is that the annealed steel strip is blackened, the furnace liner is perforated, and ammonia leakage will cause rust. . The responsibility of the steel plant is that the peeling and trachoma of the steel strip will cause rust. Substandard materials will cause rust. the responsibility of the calender is that the annealed steel strip is blackened the furnace liner is perforated, and ammonia leakage will cause rust. . The responsibility of the pipe manufacturer: the welds in the pipe manufacturer are polished rough, which will cause rust.Add a small amount of sulfur and phosphorus to make it easier to cut.