hk6751
HK6751
£1.00
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| ITEM | GB/T4100-2006 Appendix G GB REQUIRED STANDARDS | HUIDA STANDARDS |
|---|---|---|
| LENGTH AND WIDTH | ±1mm | ±0.6mm |
| THICKNESS | ±5 | ±4 |
| STAIGHTNESS | ±0.2% and the maximum variation≤2.0mm | ±0.12% and the maximum variation≤1.0mm |
| WEDGING | length≤600mm，±0.2% and the maximum variation≤20mm length＞600mm，length difference of opposite length and length difference of diagnal length≤2.0mm | length≤600mm，±0.12% and the maximum variation≤0.6mm length＞600mm，length difference of opposite length≤1.0mm，length difference of diagnal length≤1.5mm |
| SURFACE FLATNESS | length≤600mm，±0.2% and the maximum variation≤2.0mm length＞600mm，the maximum variation of upper convex and concave downward≤2.0mm | length≤600mm，±0.12%and the maximum variation≤0.6mm length＞600mm，the maximum variation of upper convex and concave downward≤1.5mm |
| SURFACE QUALITY | from 1 m to observe, at least 95% of the brick its main area without obvious defects | from 0.5 m to observe, at least 95% of the brick its main area without obvious defects |
| WATER ABSORPTION | average≤0.5% individual≤0.6% | average≤0.1% individual≤0.12% |
| DISRUPTIVE STRENGTH （N) | THICKNESS≥7.5mm,≥1300N | THICKNESS≥7.5mm,≥1500N |
| BROKEN VALUE(Mpa) | average≥35MPa minimum individual≥32MPa | average≥38MPa minimum individual≥35MPa |
| ABRASION RESISTANCE | ≤175mm² | ≤150mm² |
| THERMAL EXPANSION COEFFICIENT | non-mandatory | no crack after ten times cycle test between 15℃ and 145℃ |
| FROST RESISTANCE | no crack or crazing after test | no crack or crazing after test |
| GLOSSINESS | ≥55° | ≥60° |
| DIRT RESISTANCE | non-mandatory（class 1-5） | ≥class 3 |
| CORROSION RESISTANT | ≥GB | ≥GLA |
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| ITEM | GB/T4100-2006 Appendix G GB REQUIRED STANDARDS | HUIDA STANDARDS |
|---|---|---|
| The diviation of the average size for each tile (2 sides) from the work size | ±0.5 n=10, Ac=0,,Re=2 | -0.08~+0.06 d=0 |
| The diviation in percent of the average size for each tile(2 sides) from the average size of the 10 test specimens(20 sides) | ±0.4 n=10, Ac=0,,Re=2 | -0.01~+0.02 d=0 |
| Thickness | ±5 n=10, Ac=0,,Re=2 | -1.0~+2.6 d=0 |
| Staightness | ±0.3 n=10, Ac=0,,Re=2 | -0.02~+0.01 d=0 |
| Wedging | ±0.5 n=10, Ac=0,,Re=2 | -0.07~+0.04 d=0 |
| Central Bending Strenght(%) | ±0.4 n=10, Ac=0,,Re=2 | -0.02~+0.02 d=0 |
| Edge Bending Strenght(%) | ±0.4 n=10, Ac=0,,Re=2 | -0.05~+0.03 d=0 |
| Surface Quality | a minimum of 95% of the tiles shall be free from visible defects that would impair the appearance of a major area of tiles n=5, Ac=0,,Re=2 | no visible defects d=0 |
| Water Absorption | average：E≤1 individual：E≤1 n=5, Ac=0,,Re=2 | average：1 individual maximum：1 d=0 |
| Disruptive Strenght | thickness≥7.5mm,≥1300N thickness≤7.5mm,≥700N n=5, Ac=0,,Re=2 | average value：3007 d=0 |
| Broken Value(Mpa) | average value：≥35MPa individual：≥32MPa n=5, Ac=0,,Re=2 | average value：43 minimum value：42 d=0 |
| Abrasion Resistance | report abrasion class and cycles passed | 3 class（1500 cycles） |
| Thermal Expantion Coeeficent | no crack or crazing after test n=5, Ac=0,,Re=2 | no crack or crazing d=0 |
| Frost Resistance | no crack or crazing after test n=10, Ac=0,,Re=2 | no crack or crazing after test d=0 |
| Cracking Glaze Strenght | no crazing on glazed surface after test n=5, Ac=0,,Re=2 | no crazing d=0 |
| Dirt Resistance | minimum class 3 n=5, Ac=0,,Re=2 | 5 d=0 |
| Resistance to household chemicalsand swimming pool salts | minimum GB n=5, Ac=0,,Re=2 | GA d=0 |
| Resistance to low concentrations of acids and alkalis | GLA、GLB、GLC | GLA |
| Resistance to high concentrations of acids and alkalis | GHA、GHB、GHC | GHA |
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