Product Description Specification: 1. Mainly used for destress and surface derust 2. Higher dimensions and reliable quality Specification: The series belongs to roller-type blast cleaning machine, mainly used for buildings, bridges and other industries with large I-BEAM, H-BEAM steel sructure such as size pieces of high stress and the elimination of cleaning the surface rust.type size of piece speed of roller QH6912 1200× 1800 1500× 2000 2-3 QH698 800× 1200 1200× 1800 2-3
