This standard was last reviewed and confirmed in 2022. Therefore this version remains current.
Defines dimensions and tolerances of left-hand rope threads to be used on rope threaded drill steel equipment for percussive drilling. Five sets of values are given.
Buy this standard
|std 1 40|
|std 2 40||Paper|
A standard is reviewed every 5 years
Stage: 90.93 (Confirmed)
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