Do-Yamamoto Engineering manufactures concrete hoses engineered to handle the most extreme hydraulic and pneumatic forces found in heavy industry. These hoses are constructed with a multi-layered design, featuring a smooth internal core that facilitates high-velocity flow with minimal turbulence. To ensure structural integrity, they are reinforced with multiple plies of high-tensile steel wire spirals or braids, which allow them to sustain massive working pressures without expanding or failing.