Stainless Steel A312 ERW Pipe Manufacturers in India, Looking for Stainless Steel A312 ERW Pipe Suppliers in Kenya, Leading SS A312 ERW Pipe Distributors in Kenya, Largest SS A312 ERW Pipe Dealers in Kenya, Top Quality Sch 40 Stainless Steel Pipe Stockholder in Kenya, Reliable Exporter of Schedule 80 Stainless Steel A312 ERW Pipe in Kenya

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ERW pipes means Electric Resistance Welded Pipes. ERW steel pipes and tubes are used. ERW steel pipes and tubes are used in various engineering purposes, fencing, scaffolding, line pipes etc. ERW steel pipes and tube are available in various qualities, wall thicknesses, and diameters of the finished pipes. 

Our product finds its usage for Agricultural purposes, Drinking Water for housings, in collieries for extraction of Water, Thermal Powers, Transports, Hand pumps for deep boring wells, as a strong protection for cables by Telecom Department, Structural Purposes etc. 

While manufacturing ERW steel pipes, only high-quality, continuous-cast, fully killed, control-rolled, fine-grain, low-carbon steel is used. High performance ERW steel pipes and tubing possess high strength corrosion resistance, high deformability, high strength and high toughness. We are among the leading manufacturers and suppliers of erw pipes and tubes in India. We are also one of the largest exporters of erw pipes and tubes in India. ERW pipes and tubes stands for Electric Resistance Welded pipes and tubes. 

Based on the customers requirements we can manufacture erw pipes and tubes of different size and shape. We have a very large production capacity of erw pipes and tubes. ERW pipes and tubes are used in various engineering purposes, fencing, scaffolding, line pipes etc. ERW pipe is available in lengths from single random to 120 feet depending on mill capability. ERW pipe is available with square ends or beveled for welding, threaded and coupled and victaulic grooved. Surface finish are available in black or bare, or with protective coatings. 

For pipes or tubes size 4 inch (10.2mm) OD and below, strip is fed into a set of forming rolls which consists of horizontal and vertical rollers so placed as to gradually from the flat strip in to a tube which is then allowed to pass the welding electrodes. The electrodes are copper disks connected to the secondary of a revolving transformer assembly. 

ERW Pipes

ERW (Electrical Resistance Welding) pipes are manufactured by cold forming of steel coil into a round cylindrical shape. In the initial times it was done with the low frequency A.C. current to heat the edges.ERW pipes have various applications like fencing, line pipe, scaffolding etc. ERW steel pipes are available in various diameters, wall thickness, finish and grades

Major applications
Water pipelines
Agriculture & irrigation (Water mains, industrial water pipe lines, plant piping, deep tube-wells & casing pipes, sewerage piping)
Gas pipe lines
LPG and other non-toxic gas lines

DIFFERENCE BETWEEN SEAMLESS & ERW STAINLESS STEEL PIPE

Pipes, especially those manufactured out of stainless steel material have become one of the most crucial aspects of chemical process or other industries. With choices of seamless and Electric Resistance Welding (ERW), many a time, design engineers in industries get confused in choosing the right one for their application. But have you ever wondered how to solve this problem? As a first step towards selecting the right one for your project, it is very much important to know the differences between these two pipes, says a steel manufacturer & supplier in India.

It is definitely true that advent of seamless pipes have brought down the demand of ERW pipes. But it is a wrong idea to immediately arrive at a conclusion and falsely claim the inferiority of ERW pipes when compared with seamless pipes. Both have their unique properties and it all depends on the area of application and other technical parameters that define the necessity of type of pipe. Remember, successful engineering is not only dependent on feasibility of application but also on cost economics. So, let’s have a glance on those differences between seamless and ERW that can make huge differences for your application and economics of operation.

#1 Raw material

Seamless pipes are manufactured out of round steel billets and ERW pipes are made out of hot rolled coils, says a reputed steel supplier in India. Although both the raw materials are entirely different, it should be noted that the quality of end product – pipes, entirely depends upon both factors – quality control during manufacturing process and the initial condition and quality of raw materials.

#2 Manufacturing process

Round steel billets are heated and pushed over the piercing rod until the hollow shape is achieved. Subsequently their length and thickness are controlled through extrusion techniques. It is a completely different story in the production of ERW pipes. The coils are bent axially and the converging edges are welded throughout their length by electric resistance welding.

#3 Welding process

As seamless pipes are extruded, they do not have any sort of joint either in axial or radial direction. On the other hand, ERW pipes are made out by bending coils along their central axis and hence they are welded throughout their length.

#4 Size

Seamless stainless steel pipes are completely finished in their assembly line and are fabricated up to 26 inches of outer diameter. On the other hand, even the most advanced Steel Company in India deploying ERW techniques, go only up to 24 inches of outer diameter.

#5 Applications

  • Generally, seamless pipes are used for applications that demand high pressure and ERW pipes are utilized for the services of low and medium pressure areas.
  • Also, considering the inherent safety features of seamless pipes, they are widely used in applications of oil and gas, refineries and other chemical industries, where personnel and plant safety needs to be ensured through zero leakage policies. That being said, well manufactured ERW pipes under strict quality control can also be put into similar services other than the routine ones like water transportation, scaffolding, and fencing.  

#6 Cost

ERW pipes are definitely cheaper than their seamless counterparts. But what about the longitudinal joint factor for weld efficiency, which is 0.85 for ERW pipe and 1.0 for seamless pipe? This very fact can have a huge say on the codes that needs to be followed for piping – ASME B31.3 or B31.8.

#7 Finish

It is a known fact that the internal finish of ERW pipes is always controlled through good quality control techniques, and hence they are always superior to seamless pipes.

So, what is the choice?

It should be borne in the mind that all seamless pipes are not flawless and all welded pipes do not have inherent defects. Consumers need to make an informed decision only after considering all the pros and cons based on the end use of these pipes, advises a reputed stainless steel supplier.

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