This standard specifies the requirements and inspection methods for the geometric accuracy and working accuracy of gear chamfering

From the date of entry into force of this standard, JB/GQ 1155-90 "Technical conditions for multi-purpose lathes" shall be invalid

From the date of entry into force of this standard, JB/GQ 1154-90 "Multi-purpose lathe accuracy" is invalid. This standard specifi

JB/T 8482.1-1999 JB/T 8482.1-1999 Screw lathe precision inspection JB/T8482.1-1999 Standard download decompression password: www.b

This standard specifies and supplements the general technical standards of machine tools such as GB 9061-88 "General Technical Con

JB/T 8481.1-1999 This standard is a revision of ZB J53 008-88 "Vertical multi-spindle semi-automatic lathe accuracy". During the r

This standard specifies and supplements the general technical standards of machine tools such as GB 9061-88 "General Technical Con

This standard specifies the structural type, basic parameters, technical requirements, test methods, inspection rules, marking, pa