Hose clamps are used to group hoses and pipes in industries, in a standard pression. They are made of AISI 430 (DIN 1.4016) ferrous steel and a hexagonal-headed screw that is yellow galvanized . There is a wide range of diameters to these going from 8/12 right up to 210/230mm. The clamps do not deform under the axial and radial forces exerted during clamping. They comply with DIN3017 norms. These are rolled edged for this very reason. The tensile strength is at 3.0Nm and the breaking strength is at 4.0Nm. The hexagonal head of the devise is a C7.