| Grade B fireproof plate | |||
| Items | technology index | ||
| curtain wall board | decoration board | ||
| for outdoor | for indoor | ||
| vestige | not allowed | ||
| accidented | not allowed | ||
| positive&negative plastic leakage |
not allowed | ||
| coating omit | not allowed | ||
| wave | not allowed | ||
| bubble | not allowed | ||
| spot | the biggest size </=3mm ,No. </=3/m2 | ||
| abrasion | not allowed | ||
| scratch | not allowed | ||
| technology index | not obvious visual,arbitration E</=2 | ||
| About the surface defects not included in this table, it can be negotiated by both buyer and seller in the principle of not affecting the buyer's demand. | |||
| dimension deviation | |||
| Items | technology index | ||
| curtain wall board | decoration board | ||
| or outdoor | for indoor | ||
| length | ¡À3 | ||
| width | ¡À2 | ||
| thickness | ¡À0.2 | ||
| diagonals windage | ¡Ü5 | ||
| edge unstraightness | ¡Ü1 | ||
| warpage | ¡Ü5 | ||
| Remark:the size deviation can be negotiated by both buyer and seller in special situation |
|||
| Performance | ||||||||
| Item | technology index | Item | technology index | |||||
| curtain wall board | decoration board | curtain wall board | decoration board | |||||
| for outdoor | for indoor | for outdoor | for indoor | |||||
| coating pencil hardness | ¡ÝHB | impact resistance | ¡Ý50 | ¡Ý20 | ||||
| coating luster/gloss | ¡Ü10 | ¡Ü5 | coating grinding resistance | ¡Ý5 | ||||
| coating flexibility | ¡Ü2 | ¡Ü3 | coating hydrochloric acid resistance | no change | ||||
| coating adhesive/grade |
Zoned lattice | 0 | coating oil resistance | no change | ||||
| designated circle | 1 | coating alkali resistance | no bubble,vestige,pulver- ization,color aberration E</=2 |
no change | ||||
| bending strength | ¡Ý100 | ¡Ý40 | heat distortion temperature | ¡Ý95 | ¡Ý85 | |||
| bending elastic modulus | ¡Ý2.0¡Á102 | boiling water resistance | no abnormal | no change | ||||
| Item | technology index | Item | technology index | |||||||
| curtain wall board | decoration board | curtain wall board | decoration board | |||||||
| for outdoor | for indoor | for outdoor | for indoor | |||||||
| coating nitric acid resistance | no bubble,vestige,pulver- ization,color aberration E</=2 |
no change | penetrating resistance | ¡Ý7.0 | ||||||
| coating solvent resistance | without metal reveal | shearing strength | ¡Ý22.0 | |||||||
| coating pollute resistance | ¡Ü5 | peel strength | average | ¡Ý130 | ¡Ý4.0 | |||||
| artificial weathering | aberration | ¡Ü4.0 | ¡Ü2.0 | minimum | ¡Ý120 | ¡Ý3.0 | ||||
| degradation of gloss | <2 | temperature cycle resistance |
peel strength drop rate | ¡Ü10 | ||||||
| others | 0 | coating adhesive | Zoned lattice | 0 | ||||||
| resistance salt spray | <1 | designated circle | 1 | |||||||
| Appearance | no change | |||||||||
| Thermal expansion coefficient | ¡Ü4.00¡Á10-6 | |||||||||