This standard specifies the type, basic parameters, dimensions, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of universal fixed scale conveyors with a conveyor trough width of 400 to 1250mm. This standard is applicable to metal conveyor troughs carrying components along horizontal or straight or arc lines with an inclination of not more than 45° to transport lumps and particles with a density below 2500 kg/m^(3) and a temperature below 650°C. It is a fixed scale-type plate conveyor for bulk materials (it can also transport items weighing no more than 400kg).