Tiêu chuẩn quốc tế
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Số hiệu
Standard Number
EN 1804-2:2001 /A1:2010
Năm ban hành 2010
Publication date
Tình trạng
A - Còn hiệu lực
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Tên tiếng Anh
Title in English Machines for underground mines - Safety requirements for hydraulic powered roof supports - Part 2: Power set legs and rams
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Giá:
Price Liên hệ / Contact us
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Phạm vi áp dụng
Scope of standard This standard specifies the safety requirements for legs and rams when used as specified by the manufacturer or his authorised representative. Examples covered by the standard include legs, support rams and rams with their mechanical extensions, internal valves and safety devices, seals, hydraulic connections (up to the first hose or Type B valve, see Part 3) and their lifting points but excluding protective pipes and gaiters, external valves and hydraulic and electrohydraulic control systems.
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