Buy our ERW mild steel round tube in lengths of approximately 6m — also called round steel tube or tubular steel. Electric resistance welded steel tube to grade E220, with a clean, consistent finish ideal for frames, handrails, rollers, fencing, fabrication and general engineering. Available in outside diameters from 12mm to 38mm with cut-to-size on request and fast UK delivery.
ERW Steel Tube Sizes & Weight Chart
ERW mild steel round tube size chart with weight per metre (outside diameter x wall). All tube in approximately 6m lengths or cut to size.
| OD x wall | Weight (kg/m) |
|---|---|
| 12mm x 1.5mm | 0.39 |
| 16mm x 1.5mm | 0.54 |
| 16mm x 2.0mm | 0.69 |
| 19mm x 1.5mm | 0.65 |
| 20mm x 1.5mm | 0.68 |
| 25mm x 1.5mm | 0.87 |
| 30mm x 1.5mm | 1.05 |
| 38mm x 1.5mm | 1.35 |
Tube is sized by outside diameter (OD) and wall thickness; the 16mm OD is available in two walls (1.5mm and 2.0mm). Popular sizes include 20mm, 25mm and 38mm steel tube. Weights are calculated from the section dimensions — for any size use our metal weight calculator. Cut to size is available on request.
Rackerman is a UK steel supplier: buy ERW mild steel round tube — also known as steel tube, round steel tube, ERW tube or tubular steel — online with fast mainland UK delivery and cut-to-size service, a convenient alternative to a local steel tube supplier near you.
Key Features
- ERW (electric resistance welded) mild steel tube, grade E220
- Clean, consistent finish with a smooth weld seam
- Approximately 6m lengths, cut to size on request
- Outside diameters from 12mm to 38mm
- Ideal for frames, handrails, rollers and general fabrication
- Weldable, drillable and easily cut
About ERW Tube
ERW stands for electric resistance welded - the tube is formed from steel strip and welded along its length, giving a strong, dimensionally consistent round tube with a smooth finish. Grade E220 is a common mild steel tube grade well suited to fabrication, framework and general engineering. ERW tube is supplied in a mill finish and is not corrosion-protected, so for outdoor or damp use it should be cleaned and protected with a suitable coating. For a ready-protected option, see our galvanised steel tube, which is hot-dip zinc coated to BS 1387 for outdoor use.
Common Uses
Frames and structures, handrails and barriers, rollers and shafts, furniture and fabrication, repair work, and general engineering and DIY.
Compare Our Steel Tube Range
Choose the right tube for the job: mild steel CHS (7.5m, 21-168mm) for structural work, this ERW round tube (12-38mm) for lighter frames and handrails, galvanised steel tube for outdoors, lightweight 6063 aluminium round tube, and 304/316 stainless steel tube for handrail and marine work. Browse the full steel tube & pipe collection.
Delivery Information
Lead times are currently 3-5 working days. Tube is supplied in approximately 6m lengths, so suitable delivery access is required. If your order is long or heavy, please ensure someone is available to help with offloading on arrival.