Carbon structure delivery status: delivered in heat treatment (annealing, tempering after normalizing, high temperature tempering).
410— Martensite (high strength chromium steel), good wear resistance and poor corrosion resistance.
.It has the characteristics of high efficiency and low cost. At the same time,1 cm thick stainless steel plate, it can also well ensure the welding quality (in the capacity expansion and reconstruction project of Urumqi petrochemical, we use this method to weld 28 joints and repair joints, which is worthy of our use.
In order to prevent water from serious pollution during storage and transportation, the water industry now generally uses stainless steel pipes to store and transport water. Because stainless steel pipes have anti rust, high temperature and high pressure resistance and good sanitary performance, stainless steel pipes are slowly used in the industrial field!.
.Stainless steel is more than twice as high and has enough plastic toughness for forming. The wall thickness of storage tank or pressure vessel made of duplex stainless steel is 30-50% less than that of common austenite, which is conducive to reducing the cost.
Good corrosion resistance, suitable for a variety of media; The addition of Mo improves the corrosion resistance to reducing salts; It is resistant to marine and industrial atmospheric erosion, and can be used in seawater equipment; Due to its low carbon content, it has excellent grain boundary corrosion resistance; It can be used in pulp and paper machinery; Good processability and weldability.
The pipes for pipe cutting shall be professionally cut by stainless steel. Rotate it for two circles, then slightly tighten the piece, and then rotate it for two circles until it is cut off. It must not be enough to allow personal strength to be in place at one time to lock the piece to cut off the pipe, otherwise the pipe end will be cut off, and the pipe fittings or rubber rings cannot be inserted; After the pipe above DN65 is cut, the internal and external burrs must be removed with a hand grinder, and an appropriate outer slope opening shall be opened at the same time to avoid damaging the sealing ring.
303— Add a small amount of sulfur and phosphorus to make it easier to cut.
Hardness test: annealed stainless steel pipes with inner diameter of more than 0mm and wall thickness of less than 13mm can be tested by w-b75 Vickers hardness tester, which is very fast and simple, and is suitable for rapid and nondestructive qualification test of stainless steel pipes. For stainless steel pipes with inner diameter of more than 30mm and wall thickness of more than 2mm, Rockwell hardness tester shall be used to test HRC hardness. Stainless steel pipes For stainless steel pipes with inner diameter greater than 30mm and wall thickness less than 2mm, the surface Rockwell hardness tester shall be used to test HRT or hrn hardness. For stainless steel pipes with inner diameter less than 0mm and greater than 8mm, the special Rockwell hardness tester for pipes shall be used to test hr15t hardness. When the inner diameter of stainless steel pipes is greater than 26mm, economic, sanitary and energy-saving water pipe, whether it is for household or large engineering buildings
how.If the thickness of the steel plate is not enough, the professional stainless steel plate, stainless steel coil, stainless steel belt and stainless steel pipe are strictly tested and the quality is guaranteed. The preferential activities are in progress. Welcome to consult. It is easy to bend, which will affect the production of decorative plate. If the thickness is too large and the steel plate is too heavy, it will not only increase the cost of the steel plate but also bring unnecessary difficulties to the operation. At the same time, the allowance that should be left during processing or use of stainless steel plate shall also be considered. The thickness of copper plate is not absolutely consistent, but the thickness of the same steel plate shall be as consistent as possible. Generally, for medium-sized saw plate, the thickness tolerance is 0.05-0.15mm. If the requirements are too strict, the grinding cost will also increase. Generally, it is a structural steel plate with high resistance and high degree. The greater the mechanical damage resistance, the longer the service durability, but the grinding and processing cost is also relatively high.
Steady state creep accelerated oxidation of stainless steel pipe during low cycle fatigue test in air environment. Obvious oxidation will occur in stainless steel pipe. Previous studies have shown that the time required for oxygen in air to diffuse to the fatigue crack tip is about the order of magnitude, and the biochemical reaction time between oxygen and fresh metal is longer than that of oxygen, about 0.015 seconds, which leads to high temperature air When the low cycle fatigue test is carried out in the gas environment, the oxygen content at the fatigue crack tip of the stainless steel pipe sample is always saturated, and the excess oxygen can diffuse to the base, resulting in the weakening of the bonding of the base metal atoms, increasing the embrittlement tendency of the material, and accelerating the expansion and growth of the crack. At the same time of low cycle fatigue, high temperature will also cause creep deformation of the stainless steel pipe, High temperature provides additional energy for the accelerated diffusion of atoms. When there are defects in the material, such as holes, voids, etc., the atomic diffusion becomes easy, and with the progress of low cycle fatigue,Stainless steel heat exchanger tube, dislocations will be generated in the material. Under the action of stress, the slip and climb of dislocations interact with point defects to promote the aggregation of micropores and form large holes, such as holes and voids
Spcespce & mdash; & mdash; refers to cold-rolled carbon steel sheet and strip for deep drawing, equivalent to China 08Al (52) deep drawing steel. If it is necessary to ensure non aging property, add n at the end of the brand as spcen. Quenching and tempering code of cold-rolled carbon steel sheet and strip: annealing status is a, standard quenching and tempering is s, 1 / 8 hard is 1 / 4, hard is 1 / 2, hard is 1. Surface processing code: dull finish rolling is D, due to its high strength and hardness, the alloy needs cold forming more than austenitic steel. Because of its high strength, springback should be fully considered.
Stainless steel pipe is a kind of hollow long round steel, which is widely used in industrial transmission pipelines such as petroleum, medical treatment, food, mechanical instruments and mechanical structural parts. In addition,100mm stainless steel square pipe, when the bending and torsional strength are the same, the weight is relatively light. It provides L stainless steel pipe, s stainless steel pipe and 904L stainless steel pipe for a long time. It is an old brand of 20, with advantages in price and guaranteed quality It is also widely used in manufacturing mechanical parts and engineering structures. It is also commonly used as furniture kitchenware, etc.
Japanese cold rolled non oriented silicon steel strip consists of nominal thickness (expanded by 100 times) + code a + iron loss guarantee value (the value after expanding the iron loss value when the frequency is 50Hz and the large magnetic flux density is 5T by 100 times). Provide various brand products such as stainless steel plate stainless steel coil, stainless steel belt and stainless steel pipe for a long time. The designated products are complete and the quality is guaranteed. For example, 50a470 means that the thickness is 0.5mm and the iron loss guarantee value is ≤ 7 cold rolled non oriented silicon steel strip.
.Choose the price.
With the development of social economy, the application of stainless steel pipe has been more and more popular. It will bring new changes in various fields.
In order to prevent the occurrence of welding pores, the welding parts must be cleaned if there is rust, oil stain etc.