common size of roofing slates: [ 60X30cm, 50X25cm, 40X25cm, 40X20cm, 30X30cm] Blue-black slates were extracted from sedimentary rock from 300 to 400 million years old Silurian Slate Deposits. They are....
We are Chinese quarry producer and exporter of slate in a variety of colors for use in roofing, flooring, paving, walling, and billiard tabletop slate.Our slate conform to BS680( 1971) and ASTM C406....
Sell flooring slate( Natural Black) 1.Surface: Both sides natural split, sawn edges. 2.Surface: Top side natural, second side calibrated, sawn edges 3.Surface: Top side honed, second side calibrated....