ZB 93009-1990
Technical conditions for belt conveyor rollers used in underground coal mines

Standard No.

ZB 93009-1990

Release Date

1989

Published By

煤炭工业部

Latest

ZB 93009-1990

ZB 93009-1990 history

• 1989 ZB 93009-1990 Technical conditions for belt conveyor rollers used in underground coal mines