Level of ceramic tile

< p > country of ceramic tile is not AA or AAA rating tag, etc. < / p > < p > the national level of ceramic tile is in accordance with the classy article, first-rate to distinguish. < / p > < p =“文本-风格 align:中心; '> < / p > < p > on the ceramic tile of radioactive countries are divided into A, B, C, etc. < / p > < p > the applicable scope is not restricted is class A, can use decorate in the family of various places. So the environmental performance of indoor floor tile must ensure A class standard. The main distinction: according to the national environmental standards, adornment material radioactivity level divided into three categories. < / p > < p > A, A kind of decorative materials, decoration materials radionuclide - radium And thorium - 226 , k - 232 40 of the radioactivity specific activity at the same time satisfy the I Ra 1 or less. 0 1 or less, and Ir. Three requirements for A class of decorative materials. A kind of decorative materials production and marketing and the use scope is not restricted. < / p > < p > 2, class B decoration materials, not meet the requirements of class A decorative materials but at the same time satisfy the I Ra 1 or less. 3,IY≤1。 9 for class B decoration materials as required. Class B interior decoration materials cannot be used for class I civil building, but can be used in class I all outside facing civil construction and other building internal and external veneer and other outdoor applications. < / p > < p > three, class C decoration materials, meet the requirements of A and B class decoration materials but should satisfy the I r 2 or less. Eight requirements for class C decorative materials, class C decorative materials only can be used for building exteriors of plane and other outdoor use. < / p > < p > national standards for the used for the problem of outdoor ceramic tile of radioactive: GB6566 - 2001. < / p >
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