ERW, or Electric Resistance Welded steel, refers to the manufacturing method whereby Round E.R.W Steel Tube, or Electric Resistance Welded Steel Pipe has its steel edges melted and welded to form a consistent cylindrical shape. Heat and pressure are combined to join the steel sheet to give you a very lightweight and easy to work with tubing for an array of engineering and construction requirements from fencing to scaffolding. It can even be used in domestic or commercial settings for a vast array of possibilities.
The end product exists between welded steel pipes and seamless materials and is therefore smooth and more consistent in surface texture without an obvious weld seam. You'll get a really consistent edge that's easily formed, durable and easy to work, weld, cut to size and drill.

What's The Difference Between ERW Steel & Seamless Steel?
You may be wondering, if ERW steel and seamless steel are both without an obvious seam, what's the difference? Whereas seamless tubes are formed through rolling an entire piece of metal to create a seamless finish, electric resistance welded tubes are instead welded along the seam, to create your finished piece of tubing.
ERW is also more affordable to manufacture than seamless alternatives, without there being a significant deficit in quality.
Both seamless and ERW options are similarly robust, reliable and long-lasting.
ERW is more practical and can be cut to size at Austen Knapman to whatever dimensions you require.
ERW tubes also don't have to be circular, as our Square E.R.W Steel Box proves.


