铸铁闸门的使用和保养概述
Overview of the use and maintenance of cast iron gates铸铁闸门的使用和保养概述1: Cast iron valve door slot and plate surface for the whole installation, seconda···
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Overview of the use and maintenance of cast iron gates铸铁闸门的使用和保养概述1: Cast iron valve door slot and plate surface for the whole installation, seconda···
Steel gate use:钢制闸门用途：Steel gate is commonly used in water supply and drainage projects, water conservancy, hydropower projects, water blocking equipment···
Steel gate is commonly used in water supply and drainage engineering, water conservancy and hydropower engineering, which is composed of door frame, ram, seal r···
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