XIAMEN REFINESTONE INDUSTRIAL CO.,LTD. Block Cutting Machine China FuJian Nan'an Henglong Machinery Co., Ltd Stone Library Pictures, Additional Name, Technical Specifiion Marble (7988) Granite (6453) Limestone (2669) Sandstone (942) Travertine (890) Quartzite (806) Onyx (545) From over 221 countries with more than 21,600 types of stone
The specific gravity of good building stone is between and 6. Porosity and Absorption: Building stone should not be porous. If it is porous rainwater enters the pour and reacts with stone and crumbles it. In higher altitudes, the freezing of water in pores takes place and it results in the disintegration of the stone. 7.