Seat belt type code and technical requirements

Seat belts are personal protective equipment for high altitude workers to prevent falling injuries. They are made up of belts, ropes and metal fittings. They are collectively called safety belts. It is suitable for working at heights such as surrounding poles, suspensions, and hanging climbin

Three screw pump selection considerations which

Three screw pump selection, to be as detailed as possible to understand the conditions of the pump, in addition to the operating parameters, such as flow, pressure needs to be clear, the characteristics of the transmission medium such as media corrosivity, gas content, solid sol