Welded tubes can be divided into carbon steel welded pipes and stainless steel welded pipes in terms of material. Carbon steel welded pipe can also be called carbon welded steel pipe, and carbon steel can also be called magnet alloy steel. There are no other metal elements except carbon and iron. The stainless steel welded pipe is a chrome-nickel steel pipe. In addition to carbon and iron, there are other metal elements such as chromium, nickel and copper.
The difference between stainless steel welded pipe and carbon steel welded pipe
1. Different colors: stainless steel welded pipes contain more chromium and nickel metals, and the appearance is mostly silver and bright. Carbon steel welded pipes are mainly carbon and iron alloys, and other metal elements are relatively small. The main color of the appearance is the color of iron, and the color will be much darker.
2. The texture is different: the stainless steel welded pipe contains many other metal elements and has a smooth surface, while the carbon steel welded pipe contains more iron and carbon nia, which has the essence of iron, and the surface is not as smooth as stainless steel.
3. Different magnetism: The surface of carbon steel welded pipe is magnetic and can be absorbed by magnets. Stainless steel welded pipes are not magnetic under normal conditions and will not be attracted by magnets.
4. Different carbon elements: carbon steel welded pipe mainly refers to the mechanical properties depending on the carbon content of the steel. In general, steel without a large amount of alloying metal elements has a carbon content WC of less than 2%. In order to maintain corrosion resistance, the carbon content of stainless steel welded pipes is low, and the maximum does not exceed 1.2%.
5. Different alloy content: carbon steel welded pipe contains very few alloy elements, only a small amount of silicon, manganese, sulfur and phosphorus. Stainless steel welded pipe contains more gold elements, mainly chromium and nickel elements exceeding 12%.
6. Different corrosion resistance: carbon steel welded pipe contains less alloy elements and has weak corrosion resistance, while stainless steel welded pipe contains more chromium-nickel metal and has strong corrosion resistance.
7. Anti-corrosion and wear resistance
(1) Stainless steel refers to an alloy that is resistant to weakly corrosive media (such as air, steam, and water) and chemically corrosive media (such as acids, alkalis, and salts). This effect is mainly due to the addition of chromium, a stainless steel element. When the chromium element content exceeds 12%, an oxide film is formed on the surface of the stainless steel, which is commonly known as a passivation film. The oxide film is not easily soluble in a certain medium, plays a high isolation role, and has high corrosion resistance.
(2) Carbon steel refers to an iron-carbon alloy with a carbon content of less than 2.11%, also known as carbon steel. It's much harder than stainless steel, but it's heavier and less malleable, and it's often stiff, folds easily, and rusts easily.
8. Applicable to different
(1) The raw material of carbon steel pipe is round tube billet. The round tube blank is cut by a cutting machine to form a blank with a length of about 1 meter, and then the blank is sent to the furnace and heated by a conveyor belt. The billets are fed into a furnace, where they are heated at a temperature of approximately 1,200 degrees Celsius.
(2) Stainless steel pipe is a kind of hollow long round steel, which is widely used in industrial pipelines and mechanical structural components such as petroleum, chemical industry, medical treatment, food, light industry, mechanical instruments, etc.
9. Different characteristics
(1) Carbon steel pipes: Carbon steel pipes are divided into hot-rolled and cold-rolled (drawn) steel pipes. Hot-rolled carbon steel pipes are divided into ordinary steel pipes, medium and low pressure boiler steel pipes, high pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, geological steel pipes and other steel pipes.
(2) Stainless steel pipe: Brinell hardness is the most widely used standard for stainless steel pipes. The indentation diameter is often used to indicate the hardness of the material, which is intuitive and convenient. However, it is not suitable for steel pipes made of harder or thinner steels.
10. The price of stainless steel welded pipe is more expensive than that of carbon steel welded pipe.
The difference between stainless steel welded pipe and carbon steel welded pipe
1. Different colors: stainless steel welded pipes contain more chromium and nickel metals, and the appearance is mostly silver and bright. Carbon steel welded pipes are mainly carbon and iron alloys, and other metal elements are relatively small. The main color of the appearance is the color of iron, and the color will be much darker.
2. The texture is different: the stainless steel welded pipe contains many other metal elements and has a smooth surface, while the carbon steel welded pipe contains more iron and carbon nia, which has the essence of iron, and the surface is not as smooth as stainless steel.
3. Different magnetism: The surface of carbon steel welded pipe is magnetic and can be absorbed by magnets. Stainless steel welded pipes are not magnetic under normal conditions and will not be attracted by magnets.
4. Different carbon elements: carbon steel welded pipe mainly refers to the mechanical properties depending on the carbon content of the steel. In general, steel without a large amount of alloying metal elements has a carbon content WC of less than 2%. In order to maintain corrosion resistance, the carbon content of stainless steel welded pipes is low, and the maximum does not exceed 1.2%.
5. Different alloy content: carbon steel welded pipe contains very few alloy elements, only a small amount of silicon, manganese, sulfur and phosphorus. Stainless steel welded pipe contains more gold elements, mainly chromium and nickel elements exceeding 12%.
6. Different corrosion resistance: carbon steel welded pipe contains less alloy elements and has weak corrosion resistance, while stainless steel welded pipe contains more chromium-nickel metal and has strong corrosion resistance.
7. Anti-corrosion and wear resistance
(1) Stainless steel refers to an alloy that is resistant to weakly corrosive media (such as air, steam, and water) and chemically corrosive media (such as acids, alkalis, and salts). This effect is mainly due to the addition of chromium, a stainless steel element. When the chromium element content exceeds 12%, an oxide film is formed on the surface of the stainless steel, which is commonly known as a passivation film. The oxide film is not easily soluble in a certain medium, plays a high isolation role, and has high corrosion resistance.
(2) Carbon steel refers to an iron-carbon alloy with a carbon content of less than 2.11%, also known as carbon steel. It's much harder than stainless steel, but it's heavier and less malleable, and it's often stiff, folds easily, and rusts easily.
8. Applicable to different
(1) The raw material of carbon steel pipe is round tube billet. The round tube blank is cut by a cutting machine to form a blank with a length of about 1 meter, and then the blank is sent to the furnace and heated by a conveyor belt. The billets are fed into a furnace, where they are heated at a temperature of approximately 1,200 degrees Celsius.
(2) Stainless steel pipe is a kind of hollow long round steel, which is widely used in industrial pipelines and mechanical structural components such as petroleum, chemical industry, medical treatment, food, light industry, mechanical instruments, etc.
9. Different characteristics
(1) Carbon steel pipes: Carbon steel pipes are divided into hot-rolled and cold-rolled (drawn) steel pipes. Hot-rolled carbon steel pipes are divided into ordinary steel pipes, medium and low pressure boiler steel pipes, high pressure boiler steel pipes, alloy steel pipes, stainless steel pipes, petroleum cracking pipes, geological steel pipes and other steel pipes.
(2) Stainless steel pipe: Brinell hardness is the most widely used standard for stainless steel pipes. The indentation diameter is often used to indicate the hardness of the material, which is intuitive and convenient. However, it is not suitable for steel pipes made of harder or thinner steels.
10. The price of stainless steel welded pipe is more expensive than that of carbon steel welded pipe.
