Different Applications Of Welded Pipes

By Author: Santosh Steels
Total Articles: 12
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Welded pipe just means a pipe that has been produced by ERW process. ERW means Electrical Resistance Welded Pipes. Welded Pipes does not have a weld seam inside or outside.
This type of pipe is produced by electric resistance welding and the seam has been removed out during manufacturing process. The demand of this pipe has been raised exponentially in the recent years to a huge extent.
Welded Pipes are produced by shaping flat steel to cylindrical shapes through mechanical pressures and then seam is joined through welding. They are used in wide applications like in railing, gravity flow, conveyors and several other mechanical and piping systems.
Advantages and Disadvantages of welded Pipes
The advantage of welded pipes is simple production process, high production efficiency, low cost and fast development.
• High performance
• High deformability
• High tolerance in their dimensions
• Huge longevity and superior finishing with corrosion resistant coating.
Classification of the ERW Pipes:
Generally classified into two categories according to the general ...
... forms of the pipes:
 Longitudinal Pipes
 Spiral Pipes
According to the applications they are widely classified into several categories:
 Blow oxygen pipes used for blowing oxygen especially for manufacturing small diameter pipes.
 Galvanized pipes with zinc coating
 Electrical welding pipe used for conduit electrical wiring
 Thin walled pipes for making toys, furniture etc.

Types of Welded Pipes
 Spiral Welded Pipes
These are usually are in large diameters forms and mostly used as long-distance pipelines within the energy sector also as many other sectors like structural engineering.
 Longitudinal Welded Pipes
In these pipes, the weld is formed in longitudinal directions. Plates or sheets are curved and electrical resistance arc welding is employed within the longitudinal directions to join the seams. Mostly electrical resistance welding is performed within the manufacturing of those pipes. LSAW is additionally employed in making these pipes.
 Furnace Weld (FW) or Continuous Weld
This is a weld method manufacture pipes with minimum welding defects. The pipe is welded by heating it in a very furnace at the welding temperature followed by extrusion over a mandrel. High-performance pipes like those employed in boilers are sometimes made through this process.
 Submerged arc weld (SAW)
It is much common within the industry. The electrical arc and weld are completely submerged within the fused granular flux and remain shielded from oxidation during the process. Within the spiral pipes, it's referred to as S-SAW or HSAW while in longitudinal pipes it's named as LSAW.
 Electric resistance weld (ERW)
In this type cylindrical shaped plates or sheets are subjected to the high currents at the joining edges. The electrical resistant heat up the joints and produces weld at the seams.
Application of Welded Pipes
These pipes have a huge round of applications in the various fields of industries. They are used in engineering fields, Agricultural fields, construction fields, Pharmaceutical field, Automobile field etc. This product are widely used in boilers, ship building, light weight structural steel of the doors & windows, wire conduit, containers etc.
Below are some of the important applications of welded pipes
Pipelines: These are used for shipping oil and gas from oil fields to export terminals, refineries and end-users. The worldwide pipeline transportation industry is driven by increasing global energy demand and fuel trade. These pipes may also be utilized in the sewage line and water system lines.
Construction and Infrastructure sectors: These applications include scaffoldings, electrical and lightweight poles, structural columns and beams in steel structure buildings like stadium roofs, metro and railway stations.

Chemical Industry: Used to construct chemical processing lines, industrial sheds, and mechanical structures. Few of the sub sectors includes agrochemicals, petrochemicals, chemicals, resins and polymers, synthetic food processing plants, gas manufacturing, fertilizer industry etc.
Automotive industry: employed in making body frames supporting columns and structures. Also used in engine exhausts.
Other end user sector: includes mechanical sector, industrial sector, ship building, energy and power sectors and metal furniture.

About Santosh Steel and Pipes:
Santosh Steel has many years of experience in manufacturing and exporting Stainless steel pipes & tubes. ISO certified reputed stainless steel manufacturer in India.