Determination of compressive strength of ore and near-rock surrounding rock  Determination of compressive strength is the basis for mining design, generally in specialized laboratories.样品 The samples required for the determination of compressive strength are usually taken in the surrounding rock of the ore layer and the top and bottom plates, or taken according to the ore and surrounding rock of different hardness. Each type is 2-3, and the specification is 5×5×5cm3. Take two samples and carry out pressure test on parallel level and vertical level. 

Steel Floor Deck Forming Machine: Because floor deck are widely used in building,the Floor Deck Roll Forming Machine is more and more popular.Based on the needs, we developed floor decking roll forming machine to make the production of floor deck in a huge production. We can supply various of Floor Deck Roll Forming Machine, if you provide the basic parameters or drawings,we can design the machine for you.