Brief introduction of stainless steel industrial pipe:
Stainless steel is a kind of high alloy steel which can resist corrosion in air or chemical corrosive medium. From the metallographic point of view, because the stainless steel contains chromium, a very thin chromium film is formed on the surface, which is separated from the oxygen invading into the steel and plays a role of corrosion resistance.
Stainless steel industrial pipe It has good intergranular corrosion resistance, excellent corrosion resistance, cold working and stamping properties, and can be used as heat-resistant stainless steel. At the same time, the steel in the -180 Its mechanical properties are still good at ℃. In the solution state, the plasticity, toughness and cold workability of the steel are good; It has good corrosion resistance in oxidizing acid, atmosphere and water. The main features of seamless stainless steel pipe are as follows: Corrosion resistance, high temperature resistance, low temperature resistance, high pressure resistance, tensile strength, low temperature impact, flattening, flaring, bending without cracking 。 Therefore, seamless stainless steel pipe is mainly used for fluid transportation and mechanical structure. It includes petrochemical industry, hydropower, thermal power, nuclear power, chemical fertilizer, high pressure boiler, warship, environmental protection, aviation, papermaking, food and medical treatment.
304 stainless steel industrial pipe
The characteristics of various materials of industrial stainless steel pipe are as follows:
It should be said All austenitic stainless steel fluid pipes are resistant to corrosion, high temperature and high pressure 。 But relatively speaking, they have different obvious characteristics and functions
three hundred and four : common corrosion resistance and high temperature resistant stainless steel seamless pipe, three hundred and four It has good intergranular corrosion resistance, excellent corrosion resistance, cold working and stamping properties, and can be used as heat-resistant stainless steel. At the same time, the steel in the -180 Its mechanical properties are still good at ℃. In the solution state, the plasticity, toughness and cold workability of the steel are good; It has good corrosion resistance in oxidizing acid, atmosphere and water.
304L It's low carbon three hundred and four Variants of stainless steel, It is used in the occasion where welding is needed 。 The lower carbon content makes the carbides precipitated in the heat affected zone near the weld to a minimum, and the precipitation of carbides may cause intergranular corrosion (welding corrosion) of stainless steel in some environments.
316/316L The corrosion resistance of stainless steel pipe is better than that of stainless steel pipe three hundred and four Stainless steel pipe It has good corrosion resistance in the production of pulp and paper. Due to the addition of Mo , corrosion resistance, especially Excellent pitting resistance ； High temperature strength is also good; Excellent work hardening ( Weak magnetism after processing ) ； The solution state is non-magnetic. There are also Good resistance to chloride attack, so it is usually used for marine environment Or coastal construction projects 。
three hundred and twenty-one Stainless steel is a tube Ni-Cr-Ti Type a austenitic stainless steel Industrial Management Its performance is similar to that of three hundred and four It is very similar, but because of the addition of titanium, it has Better grain boundary corrosion resistance and high temperature strength 。 Due to the addition of titanium, the formation of chromium carbide is effectively controlled. three hundred and twenty-one Stainless steel has excellent high temperature stress rupture (Stress Rupture) Properties and creep resistance at high temperature (Creep Resistance) The stress mechanical properties are better than three hundred and four stainless steel. three hundred and twenty-one Stainless steel tube Ti As a stabilizing element , But it is also a heat-resistant steel , Compared with high temperature 316L Much better. It has good wear resistance in organic and inorganic acids with different concentrations and temperatures, especially in oxidizing media , It is used to make lining and pipeline of wear-resistant acid container and wear-resistant equipment. It has certain high temperature resistance seven hundred It is often used in power plants. It is used in the field open-air machines of chemical, coal and petroleum industries with high requirements of grain boundary corrosion resistance, heat-resistant parts of building materials and parts with difficult heat treatment.
310S: The most widely used oxidation resistance, corrosion resistance, high temperature resistance Industry Stainless steel seamless pipe and industrial welded pipe. Common use: furnace material, automobile purification device material. 310S Stainless steel pipe is austenitic chromium nickel stainless steel, with excellent high temperature oxidation resistance, acid and alkali resistance, corrosion resistance, because of the high content of chromium (Cr) And nickel (Ni) So that it has much better creep strength, can work continuously at high temperature, has good high temperature resistance, and the temperature exceeds eight hundred The allowable stress began to decrease continuously, Maximum service temperature one thousand and two hundred C, continuous service temperature one thousand one hundred and fifty ℃ 。 High temperature resistant steel pipe is specially used in the manufacture of electric furnace tubes. After increasing carbon content in austenitic stainless steel, its strength is improved due to its solid solution strengthening effect. The chemical composition of austenitic stainless steel is based on chromium and nickel, and molybdenum, tungsten, niobium and titanium are added. Because its structure is face centered cubic structure, it has high strength and creep strength at high temperature.
"Yihong" brand industrial stainless steel fluid pipe
For you: High temperature resistant stainless steel industrial pipe , corrosion resistant stainless steel seamless pipe, Stainless steel industrial welded pipe 。
Materials available from our company: three hundred and four 、 304L 、 three hundred and twenty-one 、 three hundred and sixteen 、 316L 、 310S 、 two thousand two hundred and five Etc.
Dimensions and lead time: Gauge outer diameter for production 10--820mm , wall thickness 1--40mm 。 Longest thirteen Meters (depending on the specific specifications), the delivery time is generally within 15--35 Days or so. If the quantity is large or special, it will be discussed separately.
Production process: according to different applications, cold drawing (annealing and pickling for soft industrial pipe) and cold rolling (uniform wall thickness, hard state without annealing, bright inside and outside, annealed into soft industrial pipe) can be adopted.
Product testing: according to customer requirements can do hydraulic, ultrasonic, eddy current testing.
Stainless steel industrial pipe
Stainless steel industrial welded pipe