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What is ERW Pipe & Why ERW Steel Pipes

ERW means Electric Resistance Welded. The ERW pipes are the pipes which are made from hot rolled steel strips. The hot strips are then put into a furnace which rolls them and welded longitudinal across the length. So, the ERW pipe has cross-sectional welded joints. Earlier, seamless pipe was more preferred than the ERW. In fact, erw pipes were considered the third grade however, due to improved technology, both the production and export has increased sharply. Different materials are used to make ERW pipes however, steel is considered to be the most ideal material.

ERW steel pipes can be either threaded end or plain. The highest quality is manufactured by continuous-cast steel with lowest carbon content which ensures best corrosion resistance, superior toughness and smooth surface finish. ERW steel pipes are cost effective comparing to the seamless steel pipes thus, for large scale industrial application ERW pipes are being used to maintain costing. And also due to shortage of seamless pipes, erw pipes are being used as substitute in various application.

The standard of ERW steel pipes conform the internationally accepted norms. The classification is done on basis of size, wall thickness, dimension and nominal bore. Some of the internationally accepted standards are - IS, BS, ASTM etc. These high quality pipes are ideal for using in heavy duty industrial applications. ERW steel pipes can be seen in applications like – structural building, gas & sewage lines, agricultural irrigation, steel boiler etc. These pipes are suitable for both light and heavy duties. Currently the statistical data confirm that, ERW steel pipes caught a total share of 48%.