This standard specifies the terms and definitions, classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of screw pumps used in the cement industry. This standard applies to screw pumps for the cement industry (hereinafter referred to as "screw pumps") that transport powdery dry materials below 200°C. Other similar products can be implemented as a reference.
JC/T 462-2006 Referenced Document
GB/T 1184-1996 Geometrical tolerancing--Geometrical tolerance for features without individual tolerance indications
GB/T 1804-2000 General tolerances Tolerances for linear and angular dimensions without individual tolerance indications
GB/T 3768 Acoustics—Determination of sound power levels and sound energy levels of noise sources using sound pressure—Survey method using an enveloping measurement surface over a reflecting plane*, 2017-12-29 Update