... The normal length is 40M 3.widely used in building 4.factory direct sale 5.can be customized concrete pump ... pump truck, concrete, grout, sediment, coal injection truck, bulk cement truck, sandblast, big inch grout hose, white powder and dredging ... .Blasting materialsQuartz sand, steel shot, sediment, ball bearing, cement powder, cement concrete, dry powder mortar, coal fines, carbon powder, ...