Author: chinaslate

Internal quality standards for domestic process boards 1. Board surface: The surface of the slate as a natural stone has a slight chromatic aberration and sporadic small point sulphur iron spots and water extraction lines are normal. The surface of the board is required to be flat, and there must be no bent plates or…

Internal quality standards for domestic straight floor: 1. Board surface: The surface of the slate as a natural stone has a slight chromatic aberration and a point of sulphur iron point, water extraction, sand layer and platinum line are normal, but there is no broken sand layer and platinum line. The surface of the board…

The internal quality control and management system is very important and plays a key role in ensuring the company’s entire production and operation system. For natural stone such as slate, there are various natural defects such as chromatic aberration, water extraction, sand layer, platinum wire, sulphur iron point and bump. Because of the different uses,…

Inner Quality Management of Exported Tiles of Hongping Mining Co., Ltd., Zhenping County, Shaanxi Province: Basic quality requirements: 1. Board quality and color difference: The block material must be the fine quality of the stone pier which is cut off at least 5 cm of the oxidized skin. The designated material of the tile mining…

Slate, also called shale, is a type of sedimentary rock. It is divided into shale slate, siliceous slate and calcareous slate according to its ore-forming conditions and its constituents. 　　First, the shale slate is introduced: when the ancient crust lava is erupting, the high-temperature burning magma also melts the surrounding soil or muddy rock, and…

　　Process board: divided into process board board and process board finished board, the factory price is calculated in square meters according to the size of the single piece (including the enlarged size). 　　Process board 　　It is used to make plate coasters and decorative pendants, etc., and the blocks are cut to a certain size by…