This standard specifies the noise measurement methods and limits of cold rolling pipe machines. This standard is applicable to the noise measurement and evaluation of various cold-rolled pipe machines under no load and 2/3 of the maximum motor speed.
JB 9048-1999 history
2017JB/T 9048-2017 Cold rolling pipe mill noise measurement and limits
1999JB 9048-1999 Noise measurement and limits for cold tube mill
JB 9048-1999 Noise measurement and limits for cold tube mill was changed to JB/T 9048-2017 Cold rolling pipe mill noise measurement and limits.