| Testing item |
Polished Tile |
| Polished Tile |
National Standard |
Company Standard |
| EN176-91 |
GB/T4100.1-1999 |
|
| Water Absorbability (E ) |
Average E<=3%
Unit E<=3.3% |
Average E<=0.5%
Unit E<=0.6% |
Average E<=0.2%
Unit E<=0.23% |
| Rupture modulus (MPa ) |
>=27MPa |
Average>=35MPa
Unit >=32MPa |
Average>=40MPa
Unit >=38MPa |
| Wearing Endurance (mm ) |
<=205mm3 |
<=175mm3 |
<=150mm3 |
| Breakage (N ) |
-─ |
Thickness >=7.5mm : >=1300N
Thickness ＜7.5mm
: >=700N |
Thickness >=7.5mm : >=1700N
Thickness ＜7.5mm :
>=1000N |
| Thickness (% ) |
S<=190cm2 |
190＜S<=410cm2 |
410＜S<=1600cm2 |
S＞1600 cm2 |
S＞1600 cm2 |
| |
±10 |
±5 |
±5 |
±5 |
| Warp between the average size of unit tile and working
size |
S<=410cm2 |
S<=1600cm2 |
410＜S<=1600cm2 |
S＞1600 cm2 |
S＞1600 cm2 |
| |
±0.75% |
±0.6% |
±1mm |
±0.5mm |
| Distortion permitted (% ) |
Right angle |
±0.6 |
±0.2 |
±（0.08——0.12) |
| Even degree border right angle |
±0.5 |
| Appearance quality |
layer (except false layer ) |
Visible shortage of 95% tiles without
quality problem at least |
Not permitted |
Not permitted |
| Chromatic aberration |
eyeballing apart from tile 0.8m is not apparent |
eyeballing apart from tile 0.8m is not apparent |
| (missing testing rate ) Other shortage |
eyeballing apart from 0.8m <=5% |
eyeballing apart from 0.8m <=3% |
| Polish |
>=55° |
>=55° |
Micro-powder >=65°
Non-Micropowder
>=60° |
