China National Standards

China 11:grooved GB Standards List

  •  China "11:grooved" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB 5135.11-2006 Automatic sprinkler system-Part 11:grooved couplings and fittings
    自动喷水灭火系统 第11部分:沟槽式管接件    		 China National Standards
    11:grooved
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