煤矿用带式输送机接触式逆止器
The contact-backstop of belt conveyor for coal mine

2008-11-19

煤矿用带式输送机　逆止托辊　技术条件
Belt conveyor for coal mines—Backstop idler—Technical specification

2022-05-13

带式输送机用逆止器

2011-12-20

煤矿用带式输送机减速器　技术条件
Reducer for belt conveyor for coal mining—Technical condition

1997-12-30

煤矿用下运带式输送机制动器

2023-10-26

煤矿用下运带式输送机制动器技术条件
Technical conditions of brakes for downward belt conveyors for coal mine

2002-04-08