Looking for 5mm steel plate supply? EZY STEEL offers 5 mm HA250 mild steel plate in sheet sizes up to 1200 × 2400 mm—cut to size using state-of-the-art laser technology. Fast availability from our Blacktown facility, plus free shipping for qualifying purchases, ensures your project stays on schedule. Whether for stair treads or structural parts, EZY STEEL delivers precision-cut 5 mm plate with reliability and competitive pricing