Carbon steel seamless pipes are known for their strength and durability, thanks to their seamless structure which eliminates potential weak points. They maintain a consistent mechanical property throughout their length due to their standard shape and design. Additionally, they offer better resistance at high temperatures because of the absence of joints.
These pipes also provide higher accuracy in terms of dimensions and thickness, leading to more predictable performance in various environments.
On the other hand, carbon steel welded pipes are generally less strong and durable compared to seamless ones. 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 have visible weld beads and heat-affected zones on their surface, requiring additional treatment or cleaning to meet specific standards.
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, where there's no risk of leakage due to their robust construction.
Hydraulic systems
They are ideal for hydraulic systems because they can withstand high pressure and have a smooth inner surface that minimizes friction loss.
Critical liquid transport
They are used in critical applications where pipe strength is crucial, such as in chemical processing, nuclear plants, and power generation industries.
Welded carbon steel pipes are typically used in:
Medium pressure and temperature
They are suitable for applications requiring medium pressure and temperature, like low-pressure steam systems.
Non-corrosive fluids
They are appropriate for transporting non-corrosive fluids, where there is minimal risk of corrosion, such as water distribution systems.
Manufacturing Process
Seamless carbon steel pipes are manufactured by extruding a solid steel bar to create a hollow pipe. This process results in a uniform structure without any joints or welds.
Welded carbon steel pipes are made 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 essential 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
