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Granite should be grade 1 quality and the finish as follows:
Slab & Tile Production Requirements:
Granite should be grade 1 quality, and the finish as follows:
1. Polishing:
Polishing will be uniform throughout the slabs/tiles and in gloss meter reads:
· For black slabs tiles: polishing +95 in gloss meter
· For colored slabs/tiles, polishing +85 in gloss meter
There should be no grinding wheel marks on the polished face.
2. Flaming:
Flame will be uniform throughout the slabs/tiles and brushed evenly on slabs/tiles after flaming.
3. Thickness:
(Between different pieces) Needs to be consistent and +/- 1.0mm in tolerance for different slab; and +/- 0.5mm o the same slab; +/- 0.5mm in tolerance for each tile(12”x12”x3/4”).
4. Flatness (On the same piece):
· If length <= 400mm,flatness tolerance: +/-0.2mm
· If 400mm < length < 1000, flatness tolerance: +/- 0.5mm
· If length >= 1000mm, tolerance: +/- 0.8mm
5. Diagonal:
+/- 0.5mm in tolerance for tiles.
6. Length and Wfsidth:
+/- 0.5mm in tolerance for tiles and slabs (not apply to the random edge
slabs).
7. Unpolished Side:
The unpolished side of the slab/tiles should be flat and smooth.
8. Crack, Edge Defect, Corner Defect:
Not allowed for slabs and tiles.
9. Surface Treatment:
If it is possible, treat the slab/tile surface after it has been polished. So there is
no little dent. This treatment is not required, but is recommended.
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