This standard specifies the coal samples, equipment and test methods for the screening, floating, mudding and flotation of coal co

This standard applies to rectangular head bolts (hereinafter referred to as bolts) used in scraper conveyors in coal mines. MT 187

This standard specifies the type, basic parameters and basic dimensions of the oil filter of the hydraulic system of the coal mini

This standard specifies the definition, coal sampling, determination steps and result presentation of the determination of the gan

MT/T 790-1998 Drilling rig for coal mine tunnel exploration MT/T790-1998 standard download decompression password: www.bzxz.net

This standard specifies the types and parameters, technical requirements, test methods, inspection rules, packaging and marking of

This standard specifies the types and parameters, technical requirements, test methods, inspection rules, marking and packaging of

This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage