Our Quality Control Department is responsible for quality testing of all stone raw materials and finished products. In addition, we also welcome clients to inspect the product by either personally or employing the third party .We guarantee all of our products are in good quality standard and punctual delivery for all the orders.

Mining : Scanwin's granites are mined utilizing modern methods. Please take a good attention that some mines still use dynamite or blasting methods to reduce cost, but this also damages the granite. The shock wave created by the blast will cause invisible hairline cracks which will result in the stone cracking at some later time.

Cutting : Scanwin's granites are cut by using water as coolant to ensure a lifetime guarantee on the quality of the product.

Dimensions : Product dimensions are controlled within the stipulated limits in ISO standards. Tiles are calibrated to ensure their thickness is uniform. Gauging is done to ensure the tiles are square. Bevelling is done to produce a smooth edge on the tiles.

Inspection : Inspection is done at different stages of the manufacturing process and the products are segregated for unusual patches, major colour variation, cracks, dimensions, surface finish, and other quality issues. They are then categorized as first, second, and commercial quality. Scanwin supplies only first quality material. 

We select the first grade quality granite strictly to finish the products any time for delivery:

1. Polishing:
Polishing will be uniform throughout the slabs / tiles and in gloss:
- For black slabs tiles: polishing +95 in gloss meter
- For coloured 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):
It needs to be consistent for slabs and tile:
- Tolerance +- 1.0mm for different slab;
- Tolerance +- 0.5mm on the same slab-surface
- Tolerance +- 0.5mm for each tile-surface.

4. Flatness (On the same piece):  
- If length <= 400mm, flatness tolerance: +- 0.2 mm
- If 400mm < length < 1000mm. tolerance of flatness: +- 0.5 mm
- If the length >= 1000mm, tolerance of flatness: +- 0.8 mm

5. Diagonal:
Tolerance +/- 0.5mm for tiles.

6. Tolerance of Length and Width:
Tolerance +/- 0.5mm in for tiles and slabs

7. Unpolished Side:
The unpolished side of the slab / tiles to be flat and smooth.
For paver, the tolerance to be +- 2 mm - 5 mm or more on the surface as customer's order.

8. Crack, Edge Defect, Corner Defect:
It is not allowed for slabs and tiles under our inspection strictly.