China National Standards

China valves，retard GB Standards List

  •  China "valves，retard" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB 5135.2-2003 Automatic sprinkler system--Part 2:Wet system alarm valves，retard chamber，water motor alarm
    自动喷水灭火系统 第2部分: 湿式报警阀、延迟器、水力警铃    		 China National Standards
    valves，retard
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