Carbon steel pipe is made of steel ingot or solid round steel through perforation into rough pipe, and then hot rolled, cold rolled or cold drawn. Carbon steel pipe has an important position in my country's steel pipe industry and is widely used in various industrial fields. Wanhetong is a professional manufacturer and also produces Carbon Steel Welded Pipe, Carbon Steel Black Square Tube,etc.
Manufacturing method
The manufacturing methods of carbon steel pipe mainly include the following:
Hot rolling method: After heating the steel billet to a certain temperature, it is rolled on the rolling mill, which is suitable for the production of large-diameter and thick-walled steel pipes. The surface of the hot-rolled pipe is relatively rough, the internal grain is coarse, the strength is relatively low, but the toughness is good.
Cold drawing method: The annealed steel billet is placed in the cold drawing machine for drawing, the surface is smooth, and the strength and toughness are correspondingly improved. It is suitable for the production of precision steel pipes and high-precision mechanical parts.
Cold extrusion method: The steel billet is placed in the cold extruder for extrusion, with high processing precision and smooth surface, but the steel pipe wall suitable for production is thin and cannot withstand large external force loads.
Welding method: Connected into a tube shape through welding process, suitable for the production of steel pipes of various specifications, with the advantages of high strength and good surface flatness. Seamless steel pipe production method: Using round steel as raw material, multiple perforations and heating forming are performed on the rolling mill, which is suitable for the production of high-pressure, large-diameter steel pipes, such as oil and natural gas pipelines, etc.
Carbon steel pipes can be classified according to their uses and manufacturing methods:
Hot-rolled carbon steel pipe: including general steel pipes, low and medium pressure boiler steel pipes, high pressure boiler steel pipes, alloy steel pipes, etc. Suitable for some low-pressure and high-toughness scenes.
Cold-rolled (pulled) carbon steel pipe: including general steel pipes, low and medium pressure boiler steel pipes, high pressure boiler steel pipes, alloy steel pipes, etc. Suitable for the production of precision steel pipes and high-precision mechanical parts.
Carbon steel pipes have a wide range of uses, including:
Construction field: used for bridges, buildings, brackets, etc.
Industrial field: used for fluid transportation pipelines, mechanical parts manufacturing, etc.
What are the steps in the production process of seamless carbon steel pipes?
Raw material preparation: Cut the round tube billet into billets with a length of about 1 meter and send it into the furnace to heat it to about 1200 degrees Celsius.
Piercing: Use a piercing machine for piercing.
Rolling: Form the steel pipe through three-roller oblique rolling, continuous rolling or extrusion.
Sizing: Use a sizing machine for sizing.
Cooling and straightening: Straightening is performed after cooling by water spraying.
Flaw detection and quality inspection: Internal flaw detection and manual selection are performed to ensure quality.
Packaging and storage: Store in the warehouse after spraying the number, specification and production batch number.
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