All ERW tube starts life as a strip of steel. It is trimmed to size, ensuring it can create tubing of the right dimensions. The trimming also prepares the edges of the material so they can be welded together effectively, creating a strong, durable bond. Once cut to size the steel is fed into a series of rollers so it can be adapted to the relevant shape. This is a cold forming process so it is cost effective and preserves the characteristics of the material.
When the rolling is complete and the edges come together electric resistance welding is used to bond them together. This is where the tube gets it ERW name. The weld process is effective because it only creates a small heat zone on each edge of the tubing. This also helps to preserve the shape.
Following welding the first step is to test the tube to make sure it is strong and the bond is good. After this several things can be done to finish the section. Additional rolling may be needed to get the precise size and shape. Manipulation and bending can also be done to adjust to specifications. Finally, the pieces can be finished with galvanisation, plating and even painting if necessary.
ERW tube is widely used because it is cost effective to make and satisfies an array of applications. It can be made in all manner of lengths and will hold its shape very well due to the strength of the steel.
At Union Steel Tubes we have supplied high quality ERW tubing for many years, offering top of the range products to satisfy an array of criteria. As a result we are amongst the most highly skilled and knowledgeable providers in our field. If you are looking for a supplier who can help you to decide on the best dimensions for your needs we are the company for you.
All of our tubing is quality checked so you can be assured it will satisfy your requirements. Whether you need a small order or a much larger one we can cater for you and get your products to you promptly.