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Stainless steel

Stainless steel
Description

Stainless steel
Stainless steel is a branch of steel that can not be oxidized and consist of at least 11% chromium and at most 1.2% carbon. the characteristic of stainless steel is its resistance to corrosion, which increase with chrome becomes more. the reason that why these steels are named as stainless steel is that, unlike ordinary steels, they do not stain or rust in air and moisture. Stainless steel pipes are pipes that are produced with seamed and seamless, these pipes are produced from steel sheet in the seamed state. A steel cylindrical rod is pierced and a seamless pipe is created.
Product introduction
The use of high-quality materials such as stainless steel in the process of quality of equipping commercial, residential and industrial projects has become the priority of most employers and contractors.
Currently various types of these products (stainless steel) can be seen in the market, each of which is classified according to its alloy. Actually, the term stainless steel can be used to a wide variety of alloys used in iron. The important thing a bout stainless is its alloy, which has at least 10.5% chromium. Also, we will share more information about this widely used alloy. Stay with us.
What does stainless steel mean?
This equipment is a branch of sheet that cannot be oxidized and consist of at least 11% chromium and at most 1.2% carbon. Their distinctive feature is corrosion resistance, which increases with the increases of chromium. The reason why these steels are called stainless steel is that, unlike ordinary steels they do not stain or rust in air and moisture. It is interesting to know that stainless steel is 100% recyclable. Currently, about 68 to 80 percent of stainless-steel production is done by waste recycling. It should be noted that chrome alloy is not resistant to some chemical pollutants and may rust for example, in applications that need to be used in the sea or oceans with salt water, it may oxidize and discolor.
Type of stainless steel
it is usually divided into types, 304 and 316 steel 304 shows good strength against corrosive things such as acid and its 316 types, in addition to acids, also shows good strength against chloride solution to a large extent. The 300 series grade is actually a chrome and Nikel alloy that is used in the production of pipes and tubes. Both 304 and 316 steel pipes are strong enough and corrosion resistant to be used at high temperatures. They are also easy to maintain. The choice of pipe material depends on your type of use and the environment in which the pipe is to be used.
Important features of stainless steel
Also, the characteristics of stainless steel are great malleability, resistance to rust, scaling, oxidation and creep at high temperature, at high temperature, high toughness at room temperature and low temperature. Actually, it is widely used in the construction of industrial kitchen equipment for hotels, restaurants, hospitals, and also for medical purposes. During the production of this product, after chromium is combined with air oxygen, chromium oxide is formed and after this combination, a layer is created on stainless steel that can be seen naturally.
The same layer created on stainless steel prevents the connection between air and metal, and this keeps the steel healthy. Of course, by increasing the percentage of chrome and adding other elements such as Molybdenum and Nikel, the protective layer on stainless steel is strength end and prevents it for rusting.
Dimensions of stainless sheets
Stainless steel sheets are mostly produced in dimensions of 1*2 meter and 1.25*2.50 meter, 1.22*2.44 meter and 1.5*3 meter and 1.5*6 meter and 2*6 meters are offered. The weight of steel sheet follows the weight of iron and due to combination with elements such as chromium, the density number of steel will be 7/8. For example, the weight of sheet of 2mil 304 sheet is about 31kg for dimensions of 1*2 meters.
Weight table of steel sheet
Raw The length (mm) Weight(gram) Thickness(mm) Width (mm)
1 2000 6400 0.40 1000
2 2000 8000 0.50 1000
3 2000 16000 1 1000
4 2000 32000 2 1000
5 2500 25000 1 1250
6 2500 50000 2 1250

Applications of stainless-steel sheet and pipes
Stainless steel pipe is primarily used in piping systems to transport fluids or gases. Stainless steel is produced from a steel alloy containing Nikel as well chromium, which gives stainless steel is corrosion-resistant properties.
Stainless steel pipe resists oxidation, making it a low-maintenance solution that is suitable for chemical and high-temperature applications. Since stainless is easy to clean and disinfect, it is also suitable for food, beverage and pharmaceutical applications. Also, we will give a brief reference to other uses of these widely used materials. Houses and building: chimney, water pipes and curtain wood. Transportation of materials such as hot water, chemicals, oil, gas and sulfur in various industrial.
Automotive industry: air and water flow systems, piping systems. Sewage system, industrial water lines and water networks.
Construction industry: construction applications and scaffolding.
Getting to know the types of stainless-steel fittings
Actually, stainless steel fittings are generally made of stainless steel, which has other compounds such as chromium and Nikel in their chemical structure. These joints usually corrode and decay later than other types of joints and have a longer lifespan.
Welded stainless steel fittings: these fittings are integrated with pipes when they are at melting temperature. Stainless steel welded joints withstand a certain temperature and pressure, and industries can find this tolerable temperature and pressure in the specifications of each one. Due to the permeant nature of welded stainless-steel connections, it is not possible to replace or repair them.
Stainless-steel elbow fittings: This category is mostly used for urban water and sewage piping. Its task is to change the direction in the lanes. This product has two general models, 90 degrees and 45 degrees.
Stainless steel three-way and four-way fittings: Generally, this model is used to block useless branches.
Stainless steel fittings: This model of stainless-steel fittings is a short pipe with threads at both ends. A thread is a spiral structure. They use them to connect other parts of pipelines.
Bolts and nuts: Stainless steel screws and nuts are also included in the category of these products. The screw has a long structure that can hold two or more surfaces together. The important point in using bolts and nuts is that they should not always be replaced with stronger ones. Because this sometimes makes the entire structure more fragile and causes irreparable damage to the system.
Ribbed stainless steel fittings: This model of stainless-steel fittings is easy to install, but the possibility of leakage in them is high. This product is also classified in other ways. One of them is whether they are seamed or not. Welded stainless steel fittings have gaps in their structure. Therefore, they do not have the ability to withstand high pressures and temperatures. These types of connections are used in low pressure environments.
Seamless stainless-steel fittings: In Iran, they are also called Manisman fittings, they have a seamless and integrated structure. This category has a much longer lifespan and, of course, has a higher price.
The use of stainless steel in various industries
The use of stainless steel as one of the important steel alloys in various fields cannot be ignored. From a small zipper to the largest skyscrapers, stainless steel has become the basis of modern human life. Stainless steel made in more than 150alloy grades and in different sections, including sheet, pipe and rebar. High strength, corrosion resistance and low maintenance cost are the most important advantages of stainless- steel, which has led to the widespread use of stainless steel in various industries. Also, the long life of stainless steel and its recyclability make this alloy suitable for a wide range of applications. Medical and pharmaceutical industries, transportation industries, food and kitchen industries, and energy and heavy industries are among the most significant cases in which this sheet and fitting are used.

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