Considering its colourable and castable nature, its extended hardness range, low wear and superior load bearing capacity, polyurethane is a smart substitute for rubber.

考虑到着色和浇铸料的性质，选择具有更大硬度范围，低磨损，载能力的聚酯替代橡胶的。

This paper introduces the aggregate of lightweight mollite and the characters of its blended castable as well as the practical use of this castable in steel rolling furnace.

介绍了轻质莫来石骨料及用该骨料配制的轻质莫来石浇注料的性能，并介绍了该浇注料在轧钢加热炉上的应用情况。