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In this article, we are going to introduce steel pipe. This pipe is one of the most widely used pipes in engineering, which is widely used in various industries, including the construction industry, due to its high resistance to corrosion. First, we will introduce steel pipe, then we will examine its features and applications. After that, we will categorize and examine the types of steel pipes in terms of appearance. The online iron collection offers steel pipes in alloys 304, 316, 321 and 310 in different sizes.
What is steel pipe and its types?
Steel pipe is produced in the form of a hollow cylindrical profile made of steel. This pipe is formed from stainless steel with a combination of iron and carbon. In fact, the use of nickel in the alloy of these pipes has improved the corrosion resistance of these pipes. In general, about the applications Steel pipe can be said to be used in large and small industries that require protection against corrosion in aquatic environments or near water, in the construction of fences, doors and guards. According to the needs of customers, steel pipes are produced in different sizes, the surface of these pipes is polished and smooth, and this feature makes washing easy. .
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Steel pipes have features, some of which we will mention in this section:
- Corrosion resistance in humid weather conditions.
- They do not change color or shape.
- در دماهای بالا و پایین مقاومت زیادی دارند.
Various uses of steel pipes
Steel pipes, like other pipes, have applications due to their unique characteristics, some of which we will mention in this section.
- Used in water supply system, sewage treatment system, water purification system, seawater conveying system.
- Used in steel railings, steel staircase railings.
- Used in pharmaceutical, food, chemical and health product manufacturing factories.
Classification of steel pipes by appearance
Steel pipes are divided into two categories in terms of shape: seamless steel pipes and welded steel pipes.
- Seamless steel pipe: This type of steel is produced with alloy 300. Among these types of steel pipes are 304 seamless steel pipe, 316 seamless steel pipe, 310 seamless steel pipe and duplex steel pipe. In the production of seamless steel pipe, it is first heated, and then pressurized. No joints are used in the production of this type of pipe. In terms of price, seamless steel pipes have a higher price than welded pipes and, in comparison with other pipes, they have an affordable price due to their good quality. .
- Seamless steel pipe: This pipe, like seamless steel pipes, is produced from alloy 300. These pipes include 304 seamless steel pipe, 316 seamless steel pipe, and duplex steel pipe. 304 and 316 steel pipes, which are produced in both seamless and welded forms, contain 18% chromium, 8% nickel, and 16% chromium, 10% nickel, and 2% molybdenum, respectively. .
The reason for using molybdenum is to increase corrosion resistance (when this steel product is used in the sea, it must resist the chloride present in seawater).
In the production of seamless steel pipes, steel sheets are used, which are welded together after being rotated. As mentioned, in terms of price, welded steel pipes have been cheaper than seamless steel pipes. The price changes of this product depend on the sheet and The Stylo profile is generally effective for all steel sections.
Classification of steel railings according to alloy types
In terms of different alloys, steels have specific categories, which we will first name and briefly review some of.
- 316 steel pipe
One of the most important stainless steel alloys is alloy 304. Among the elements used in this pipe is carbon. The amount of carbon used in the 304 series steel pipe is 2%. Other elements used in this pipe include chromium, nickel and magnesium. Stainless steel pipes have many uses, in other words, the anti-rust property of this pipe has made it easy to use in open spaces, wet places, as well as in the production of steel fences and railings. The 304 series steel pipe does not change over time and the iron color remains shiny. .
- 316 steel pipe
In terms of appearance, the 304, 316 and 201 series steel pipes are very similar to each other, so that they cannot be distinguished from each other in terms of appearance. In the 316 series steel pipe, 10 to 12 percent nickel and 16 to 18 percent chromium are used. The use of this amount of nickel and chromium in the 316 series prevents these pipes from rusting and corroding in contact with acids. The most common applications of these pipes are in distillation package systems, water purification systems, pharmaceutical production systems and food production systems. .
- 201 steel pipe
Due to the use of less carbon and nickel, these pipes have lower resistance than the other two types (304 and 316). On the other hand, they are also less resistant to rust and corrosion. .
Choosing and purchasing steel pipes to suit your needs
Steel pipes are a top choice in various industries due to their outstanding features such as high corrosion resistance, beautiful appearance, and exceptional durability. Understanding the different types of these pipes, including welded and seamless pipes, as well as various alloys such as 304, 316, and 201, can help you make a better choice that suits your project needs. .