{"product_id":"spiral-durbar-stair-treads-tapered-pattern-1-anti-slip-checker-plate","title":"Spiral Durbar Stair Treads – Tapered Pattern 1 Anti-Slip Checker Plate","description":"\u003cp\u003eOur spiral durbar stair treads are tapered Pattern 1 checker plate steps shaped for spiral and helical staircases. Each spiral tread is pressed from S275 mild steel with a raised anti-slip durbar pattern and a 50mm turn up \/ down nosing, in a 600 x 270mm tapered (kite) profile at 4.5mm thickness. Treads are handed to suit the direction of ascent, so you can specify clockwise or anti-clockwise to match your stair build.\u003c\/p\u003e\n\n\u003ch2\u003eSpecification\u003c\/h2\u003e\n\u003cp\u003eMaterial grade: S275 mild steel — minimum yield strength 275 N\/mm²\u003c\/p\u003e\n\u003cp\u003ePattern: Pattern 1 raised durbar anti-slip checker plate\u003c\/p\u003e\n\u003cp\u003eTread size: 600 x 270mm tapered (kite-shaped) profile\u003c\/p\u003e\n\u003cp\u003eNosing: 50mm turn up \/ down\u003c\/p\u003e\n\u003cp\u003eThickness: 4.5mm\u003c\/p\u003e\n\u003cp\u003eHanding: clockwise ascend or anti-clockwise ascend\u003c\/p\u003e\n\u003cp\u003eFinish: mill finish (self-colour) — paint, prime or galvanise to suit\u003c\/p\u003e\n\n\u003ch2\u003eChoosing the Correct Hand\u003c\/h2\u003e\n\u003cp\u003eSpiral treads are directional. A clockwise-ascend tread is used where you turn clockwise as you climb (right hand to the centre column); an anti-clockwise-ascend tread turns the opposite way. Confirm the rotation of your staircase before ordering — fitting the wrong hand will leave the nosing on the incorrect edge. If you are unsure, count the turn direction as you walk up the stairs from the bottom step.\u003c\/p\u003e\n\n\u003ch2\u003eCommon Uses\u003c\/h2\u003e\n\u003cp\u003eSpiral durbar treads are used on industrial spiral staircases, access towers, mezzanine spiral stairs, tank and silo access, and external spiral fire escapes. The solid durbar checker plate surface gives a slip-resistant, debris-free step that is more robust and easier to clean than open-grid spiral treads.\u003c\/p\u003e\n\n\u003ch2\u003eFitting \u0026amp; Workability\u003c\/h2\u003e\n\u003cp\u003eEach tapered tread is supplied with a pressed nosing ready to weld or bolt to a central column and outer stringer. S275 durbar plate can be drilled, cut and welded with standard steelwork methods and accepts paint, primer or hot-dip galvanising after fabrication where corrosion protection is needed for external use.\u003c\/p\u003e\n\n\u003ch2\u003eMatching Durbar Range\u003c\/h2\u003e\n\u003cp\u003eSpiral treads are made from the same S275 durbar plate as our \u003ca href=\"https:\/\/rackerman.co.uk\/products\/mild-steel-durbar-checker-plate-8x4ft\"\u003e8×4ft durbar checker plate sheets\u003c\/a\u003e and \u003ca href=\"https:\/\/rackerman.co.uk\/products\/mild-steel-durbar-checker-plate-2000x1000mm\"\u003e2m × 1m durbar plate\u003c\/a\u003e. For straight flights see our \u003ca href=\"https:\/\/rackerman.co.uk\/products\/durbar-stair-treads-mild-steel-pattern-1-anti-slip-checker-plate-s275\"\u003edurbar stair treads\u003c\/a\u003e and \u003ca href=\"https:\/\/rackerman.co.uk\/products\/durbar-landing-plates-mild-steel-pattern-1-anti-slip-checker-plate-stair-landings\"\u003edurbar landing plates\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eDelivery Information\u003c\/h2\u003e\n\u003cp\u003eSpiral durbar stair treads are made to pattern and supplied on a 5–10 working day lead time to mainland UK addresses, with free UK delivery. Treads are sent palletised or by courier depending on quantity — please ensure suitable access is available for delivery.\u003c\/p\u003e","brand":"Rackerman","offers":[{"title":"600 x 270 x 4.5mm (50mm turn up\/down) – Clockwise ascend","offer_id":58361113117059,"sku":"RM-DURTREAD-SPIRAL-CW","price":71.99,"currency_code":"GBP","in_stock":true},{"title":"600 x 270 x 4.5mm (50mm turn up\/down) – Anti-clockwise ascend","offer_id":58361113149827,"sku":"RM-DURTREAD-SPIRAL-ACW","price":68.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/1710\/6429\/files\/hf_20260630_080219_d3264e2f-f7c6-4dd1-b0a7-0426e5074498.png?v=1782806809","url":"https:\/\/rackerman.co.uk\/products\/spiral-durbar-stair-treads-tapered-pattern-1-anti-slip-checker-plate","provider":"Rackerman","version":"1.0","type":"link"}