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发表于 2010-5-2 20:53
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来自: 中国上海
消防管路的垫片有一定的耐火要求的。
如ABS规范要求如下:
Materials used for the firemain, hydrants and firemain components (such as valves, expansion joints, fittings, gaskets, etc., including filler materials used for associated methods of attachment) are not considered “readily rendered ineffective by heat”, provided the components made of such materials are capable of passing a recognized fire test acceptable to the Bureau. |
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