Carbon steel seamless pipes are known for their strength and durability due to the seamless structure, which eliminates potential weak points. They offer a consistent mechanical performance throughout their length and provide better resistance at high temperatures because of the absence of joints.
They also offer higher accuracy in terms of size and thickness, leading to more predictable performance in various environments.
On the other hand, carbon steel welded pipes have less strength and durability compared to seamless pipes. This is mainly due to the welding process itself, which can cause changes in the microstructure and mechanical properties near the weld area, potentially reducing toughness and resistance to wear.
Welded pipes may also leave weld beads and heat-affected zones on their surface, requiring additional treatment or cleaning to meet desired specifications.
Seamless carbon steel pipes are commonly used in:
High-pressure applications
They are often preferred for high-pressure scenarios, such as in the oil and gas industry for transporting liquids under high pressure, as there's no risk of leakage.
Hydraulic systems
They are suitable for this application due to their ability to withstand high pressure and their smooth inner surface, which reduces friction loss.
Critical liquid transport
They are used in critical applications where pipe strength is essential, such as in chemical processing, nuclear plants, and power generation industries.
Welded carbon steel pipes are typically used in:
Medium pressure and temperature applications
They are appropriate for situations that require medium pressure and temperature, such as low-pressure steam systems.
Non-corrosive fluids
They are ideal for transporting non-corrosive fluids where there is minimal or no risk of corrosion, such as water distribution.
Manufacturing Process
Seamless carbon steel pipes are produced by extruding a solid steel bar to create a hollow pipe. They have no joints or welds, ensuring a standard design.
Welded carbon steel pipes are manufactured by rolling a flat plate into a cylindrical shape and then welding it. Common welding methods include longitudinal (LSAW) and spiral (SSAW) welding.
Why Choose?
Seamless carbon steel pipes offer superior strength and reliability, especially in critical applications where high pressure conditions are present.
Welded carbon steel pipes are cost-effective, easier to manufacture, and suitable for medium pressure and temperature applications.
Table of contents
Carbon Steel seamless and welded pipe manufacturing process
Seamless vs Welded Carbon Steel Pipe Specification
Carbon steel Welded and seamless pipe equivalent
Tolerances for hot finished seamless pipe
Tolerances for cold drawn welded tubes
Carbon Steel seamless and welded pipes chemical composition
CS Welded and Seam Pipe mechanical properties
List of documents to import Low Temp Welded Pipe
A106 Seamless and Welded Pipe Schedule
CS Welded and Seamless Pipe International Standard
Hot finished welded type tubes sizes in mm
Difference between seamless pipe and erw pipe
Maximum Allowed Stress of DIN EN 10220 seamless steel pipes
