g*9
6 楼
Tile 硬度 (hardness) is defined by ASTM (American Society Testing Materials)
C1027 (or ISO 10545-7)
PEI is Ceramic Tile Wear Ratings defined by Porcelain Enamel Institute .
They are not the same.
Most porcelain tiles on the market today will have a PEI class 5 rating.
个1
【在 e********t 的大作中提到】
: 买了一个PEI硬度是5的,没舍得多花钱买金刚钻,用carbide钻了两天晚上才开了一个1
: -3/8的圆孔。
C1027 (or ISO 10545-7)
PEI is Ceramic Tile Wear Ratings defined by Porcelain Enamel Institute .
They are not the same.
Most porcelain tiles on the market today will have a PEI class 5 rating.
个1
【在 e********t 的大作中提到】
: 买了一个PEI硬度是5的,没舍得多花钱买金刚钻,用carbide钻了两天晚上才开了一个1
: -3/8的圆孔。
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