Pipe and Tube

Pipe and Tube


Pipes and tubes are tubular structures, which are designed to transmit fluids and gases over long distances. They are both similar products but, pipes can be utilized in high-pressure applications while the latter is preferred for moderate to low-pressure systems. Both these two specifications has its own advantages, and flaws which gives consumers a diverse choice to select the product suitable for them.

What is the seamless material?

A seamless pipe is produced utilizing a single piece of sheet metal. This range of components are very strong and diverse due to the unique raw materials used while producing them. They don’t require any welds or joints which, enables them to have enhanced tolerances. They are formed by placing a hot billet over the steel, which pierces it and forms, an opening creating a unique design. This product range can be utilized in stress-induced environments where corrosion levels are at the highest. Apart from this, they perform well under extreme pressures and elevated temperature systems where other pipes wouldn’t readily suffice. Each of these modules can be availed in different shapes, namely square, circular, rectangular, and hydraulic. All these different shapes come with unique properties and can be used across different applications.

What is the difference between welded and seamless?

There are some key differences, which help in differentiating the two pipes.

  • A welded pipe is produced by welding pieces of sheet metal together, while the latter is produced without the requirements of any welds.
  • The working pressure of a welded pipe is 20% lower in comparison to the continuous pipe.
  • A pipe without any seams is produced in a shorter length but, the latter can be availed in a diverse range of sizes.
  • Welds are more likely to be corroded compared to non-welded pipe.
  • Welding is a simple and short process, while extrusion of billet has a bigger lead-time.
  • A weld-oriented surface is smooth in comparison to an extruded surface.
  • A steel seamless component has better ovality compared to a component produced by different welding procedures.
  • A seamless material is expensive due to the raw materials used in producing them, while a seam joint piping is low-cost and reliable.

How are seamless tubes produced?

Different quality of steel is utilized to produce these marvelous structures. Since they don’t possess any welds or joints, they are formed utilizing billets. These billets are heated at high temperatures, which form into shells. The shells are later rolled on a mandrel and pushed onto the steel. In the reducing mill, the tube is customized giving, it different dimensions and wall thickness. After they are cooled, they are cut into fixed lengths and later furnished to give it enhanced mechanical properties and enhanced connection systems.

What is difference between ERW and seamless?

A seamless pipe is produced utilizing a unique process while the cold forming of a sheet into a tubular structure produces electric resistance welded pipe. Both these pipes can be utilized in different applications however the ERW pipe is more susceptible to intergranular corrosion due to welds used while producing them. Furthermore, they are not preferred in high-pressure applications compared to the single sheet pipe ranges. An ERW pipe is, however, very economical compared to an extruded.

Is seamless pipe stronger than welded?

Yes, they are stronger than welded sections making them more expensive. The overall quality of the pipe far exceeds the quality of the seam joint modules. This allows them to be used in high-pressure applications in different industries. Their ability to withstand harsher environmental conditions also gives them enhanced strength making them highly desirable. Furthermore, their availability in the market is low as they are produced using high-quality raw material.

Why is welded pipe not suitable for high pressure applications?

A welded pipe has seams or welds which, make them considerably weak. These joints have the potential to collapse and subsequently lead to leakage and failure of the system. This structural flaw, however, has been rectified and improved over the years, which has allowed them to be used in higher-pressure applications. However, to be on the safer side many high-risk industries prefer not to use a seam joint pipe within their operation.