Compliance With Following National / International Standards: IS : 13630 (Part 12), ISO 10545 (Part ‑ 6) The ability of unglazed tiles to resist deep abrasion is determined by holding the tile under test in a vertical plane and pressing it against a steel disc rotating at a specified speed. Further details available on our website. The Price mentioned here are subject to change as per the capacity, specifications and application of the user.