JB/T 9100-1999 JB/T 9100-1999 Technical requirements for local ventilation fans in mines JB/T9100-1999 Standard download decompression password: www.bzxz.net
Some standard content:
JB/T 9100--1999wwW.bzxz.Net This standard is a revision of ZBJ72037-90 "Technical Conditions for Local Ventilators in Mines". Compared with the original standard, the main technical content of this standard has been changed as follows: The original standard stipulates that the ventilator ≥ N5.0, the maximum full pressure efficiency ≥ 78%, Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.