Order 50mm x 50mm box section from metals4U. This box section has excellent weldability and machinability with a mill finish. You can find all the product information further down on this page. Tradespeople, contractors, and keen hobbyists can expect the very best quality and service with our 50mm x 50mm box section, and if you order before 2pm, we will dispatch your product on the same day. Fit for a range of applications, you can buy 50 mm x 50mm box section in 3 or 6 metres, or if you’re looking for a specific measurement, we offer a free custom cutting service. Buy a 50mm x 50mm x 2.5mm mild steel box section from the UK’s leading online metal supplier today.