JB/T 50195-2000 This standard specifies the reliability assessment method, test method and fault judgment rules for small flour pr

JB/T 50190-1999 This standard is a revision of ZB J41 010-89 "Gear Hob Life Test Method and Acceptance Conditions". During the rev

This standard specifies the recommended procedures for life comparison test and quality acceptance of standard straight shank and

JB/T 50188-1999 This standard is a revision of JBn 3827-84 "Reliability and durability test methods for diesel engines for constru

This standard specifies the energy consumption level of hammer groups in steam-air forging hammer workshops. This standard applies

This standard specifies the energy consumption level of hammers in steam-air forging workshops. This standard applies to steam-air

JB/T 50177-1999 This standard is a revision of ZB J01 027-88 "Classification of Power Consumption in the Formation Process of Lead

JB/T 50176-1999 This standard is a revision of ZB J01 026-88 "Energy Consumption Classification of Heating Process of Insulating M