Do-Yamamoto Engineering designs high-performance Composite Hoses using the “mandrel-wrapped” concept to create a fail-safe, multi-layered solution for fluid transfer. These hoses are unique because they are built from multiple plys of specialized thermoplastic films and fabrics, held in place by two counter-rotating wire helixes (one internal and one external). This intricate construction allows the hose to remain exceptionally lightweight and flexible—up to 30% lighter than traditional rubber hoses—without sacrificing the strength required for high-pressure operations.