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# Rackerman > Rackerman (rackerman.co.uk) is a UK supplier of construction and garden materials: structural steel (RSJ beams, universal columns, mild/galvanised/stainless steel sheet, aluminium, sections and bars — cut to size), plus playground rubber chippings, palisade fencing, solid wood worktops and timber. Free UK mainland delivery on most ranges; cut-to-size steel and made-to-order items are non-returnable, all other items returnable within 30 days. ## Buying guides & references - [RSJ Steel Beam Size Guide](https://rackerman.co.uk/pages/rsj-steel-beam-size-guide): Standard UK RSJ/UB/UC section sizes, spans and how to choose. - [UK Steel Beam Size Chart](https://rackerman.co.uk/pages/steel-beam-size-chart): Every standard beam/column size with weights and dimensions. - [Metal Weight Calculator & Weights Chart](https://rackerman.co.uk/pages/metal-weight-calculator): Weight per metre of steel, stainless & aluminium — sheet, box section, angle, bar & tube, to BS EN 10219/10056. - [Steel Grades & Standards](https://rackerman.co.uk/pages/steel-grades-standards): S235, S275, S355J0 explained, to BS EN 10025-2 / BS EN 10365. - [What is an RSJ? Steel beam meaning explained](https://rackerman.co.uk/blogs/news/what-is-an-rsj-steel-beam) - [S275 vs S355 steel](https://rackerman.co.uk/blogs/news/s275-vs-s355-steel): Grade comparison for UK structural steel. - [Universal Beam (UB) vs Universal Column (UC)](https://rackerman.co.uk/blogs/news/universal-beam-ub-vs-universal-column-uc-what-uk-builders-actually-specify) - [Do RSJ steel beams need to be painted?](https://rackerman.co.uk/blogs/news/do-rsj-steel-beams-need-to-be-painted) - [Red oxide RSJ steel beams — what the finish means](https://rackerman.co.uk/blogs/news/red-oxide-rsj-steel-beams-what-the-finish-means-and-when-it-s-typically-used) - [How to box in a steel beam](https://rackerman.co.uk/blogs/news/how-to-box-in-a-steel-beam) - [How RSJ steel beams are delivered in the UK](https://rackerman.co.uk/blogs/news/how-rsj-steel-beams-are-delivered-in-the-uk) - [Loft conversion steel cost (UK)](https://rackerman.co.uk/blogs/news/loft-conversion-steel-cost) - [Rubber chippings vs bark for play areas](https://rackerman.co.uk/blogs/news/rubber-chippings-vs-bark-for-play-areas) - [How much rubber chippings do I need?](https://rackerman.co.uk/blogs/news/how-much-rubber-chippings-do-i-need) - [What is palisade fencing?](https://rackerman.co.uk/blogs/news/what-is-palisade-fencing) - [Palisade fencing cost per metre](https://rackerman.co.uk/blogs/news/palisade-fencing-cost) - [Types of metal security fencing](https://rackerman.co.uk/blogs/news/types-of-metal-security-fencing) - [Oak vs beech worktop comparison](https://rackerman.co.uk/blogs/news/oak-vs-beech-worktop) - [How to oil a wooden worktop](https://rackerman.co.uk/blogs/news/how-to-oil-a-wooden-worktop) ## Product ranges (collections) - [RSJ Steel Beams & Columns](https://rackerman.co.uk/collections/rsj-steel-beams-columns): S355J0 UB & UC sections cut to any length, free UK delivery. - [Metal Sections](https://rackerman.co.uk/collections/metal-sections): Box, angle, channel, flat, round bar and tube in steel, stainless and aluminium. - [Steel & Metal Sheet](https://rackerman.co.uk/products/mild-steel-sheet): Mild, galvanised, stainless steel and aluminium sheet & plate. - [Playground Rubber Chippings](https://rackerman.co.uk/collections/playground-rubber-chippings): Rubber mulch safety surfacing to BS EN 1177, bulk bags 300kg–5t. - [Palisade Fencing](https://rackerman.co.uk/products/galvanised-palisade-fencing): Galvanised steel palisade to BS 1722 Part 12. - [Solid Wood Worktops](https://rackerman.co.uk/collections/solid-wood-worktops): Solid oak, beech, walnut, iroko & ash kitchen worktops, cut to size. - [Timber & Boards](https://rackerman.co.uk/collections/timber-boards-sheet-materials): Treated timber, decking, OSB, MDF, plywood. ## Policies & contact - [Delivery & lead times](https://rackerman.co.uk/pages/shipping-delivery): Free UK mainland on most items; palisade £15, timber £25; worktop surcharges to remote regions. - [Returns & refunds](https://rackerman.co.uk/policies/refund-policy): 30-day returns on standard items; cut-to-size and made-to-order are non-returnable. - [Trade discounts](https://rackerman.co.uk/pages/trade-discounts) - [Contact](https://rackerman.co.uk/pages/contact): Rackerman Ltd, 5 Prudhoe Street, Alnwick, Northumberland, NE66 1UW. Tel 01665 497513. Email info@rackerman.co.uk.