... cover 3.High quality & competitive price 4.Easy installation & mai Cement screw conveyor It is a compact structure, cross-sectional area ... , small block of bulk materials such as clay powder, coal, cement, sand, grains, small lump, pebble, and cast-iron chips and ... stock for common diameter of 219,273,and dimension & angle can be customized according to your requirement.8.Assembled by standard ...