HG 21603-1999 回转盖快开不锈钢手孔.pdf

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本标准规定了回转盖快开不锈钢手孔的型式、基本参数、尺寸、技术要求和有关使用规定。本标准适用于无冲击工作压力小于等于PN 0.6MPa，工作湿度为-20200，升温降压可以适用于工作温度300的回转盖快开不锈钢手孔。

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