AD charcoal grey
Color code: AD-408A
This slate is good quality that passed GB/T 18600-2009, ASTM, BS EN 12326-1-2004. It has following characters
--smooth surface
--nice color
--durable. Our absorption is 0.18%, much lower than GB/T R1 grade 0.25% and ASTM 0.25%. Abrasion resistance is 0.016mm that is much lower than GB/T 0.35mm and ASTM 0.38mm.
Size:
425: 400mmx250mm
420: 400mmx200mm
430: 400mmx300mm
the maximum specifications are above.
630: 600mmx300mm
520: 500mmx200mm
330: 300mmx300mm
320: 300mmx200mm
Thickness:
5-7mm, 6-8mm,7-9mm