两性故事吃奶添下面_久久久久久人精品免费费看_久久午夜夜伦鲁鲁影院_最近中文字幕免费手机版,欧洲精品码一区二区三区免费看,欧美成人免费高清二区三区,午夜在线视频

1. High temperature resistance and wear resistance

This depends on the quality of the product, the selection of aggregates, and the production process, etc. A series of problems have been strictly controlled by Dongxin Refractory to prevent defective products from appearing.

2. ≤6.5% water

No more than 6.5% water, the strength will increase after the pouring is completed, another benefit is that the maintenance time is shortened.

3. Technical ratio

Through professional technology, the uniform and stable ratio of the particle size is the guarantee of the quality of the castable.

4. Alkali resistance

At the same time, the alkali resistance of the castable is also a very important standard, because the preheater system, its internal alkaline material erodes the lining material more seriously, so the alkali resistance of the castable is stronger.