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Standard
| JB/T 1308.12-2011 PN 2500 ultrahigh pressure valves and fittings —Part 12：Positioning rings (English Version) |
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Detail of JB/T 1308.12-2011
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Introduction of JB/T 1308.12-2011
本标准规定了超高压阀门用定位环形式、尺寸和技术要求。
本标准适用于公称压力PN2500、公称尺寸为DN15~DN25的乙烯、聚乙烯等非腐蚀性介质的锻造钢制阀门的定位环。
Contents of JB/T 1308.12-2011