资讯动态
Q941F电动球阀各项标准_阀门标准
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设计制造标准
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法兰尺寸标准
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结构长度标准
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检验试验标准
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GB/T12237-89
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JB/T79-94 HG20592
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GB12221-89
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GB/T13927-89 JB/T9092-99
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API6D
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ANSI B16.5
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ANSI B16.10
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JB/T9092-99
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JPI7S-48
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JIS B2212~2214
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JIS B2002
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API598
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开云手机入口-开云(中国)
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