'GB/T3287空气净化器新国标标中内外螺纹是否仍分为密封性和非密封性二种形式？目前市场上有非密封性的90度

来源：蜘蛛抓取(WebSpider) 时间：2017-09-15 22:04 标签： 贝昂.新国标
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GB-T可锻铸铁管路连接件.pdf 35页
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GB-T可锻铸铁管路连接件
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中 华 人 民 共 和 国 国 家 标 准
eqvISO49:1994
可锻铸铁管路连接件
Malleablecastironpipefittings
国家 质 董轰技 术 监 督 局 发布
前言 ···························································································。················…… 工
ISO前言 ···。·········。·············。········································································…… I
1 范 围 ·········································································································…… 1
2 引用标准 ····································································。·。········。···················…… 1
3 定义 ······。·······。······。。·······。······。。·································································…… 1
4 产品分类 ·····················································，············································…… 3
5 技术要求 ·················································。··············。···········。·······················一 6
6 试验方法 ·······。··································································…… 9
7 检验规则 ········································。·························。·。········，····················…… n
8管件尺寸和安装长度— 通则···············。。··。······。·····。·······································…… 12
9标志、包装、运输、贮存 .·12
附录A(标准的附录) 管路连接件型式尺寸 ·····································.·..·..·..·..·…… 13
本标准是根据 国际标准 ISO49:1994《
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