In the concrete mixing field, many equipment are relatively cumbersome, and some are "bulky but not heavy". When the concrete batching plant is sent to the construction site, some equipment, such as cement silo, Because of the low value and high freight long-distance transportation is not cost-effective Sometimes the height and diameter of the cement silo exceeds the road transportation requirements. For example, ordinary vehicles with a diameter of 5 meters silo cannot be loaded, and ordinary roads are impassable due to tunnels, culverts, and overpasses. Only sheet cement silo can be assembled or welded on site (fabricate on-site ).