GB/T 25429-2019 代替 GB/T 25429—2010
石油天然气钻采设备钻具止回阀
Petroleum drilling and production equipment—Drill string non-retum valve
2019-12-31 发布
2020-11-01 实施
目 次
前言.............................................1
1范围............................................1
2规范性引用文件.......................................1
3术语和定义、缩略语......................................2
3.1术语和定义......................................2
3-2缩略语........................................3
4结构型式...........................................3
5要求.............................................4
5.1    总则........................................4
5.2设计要求.......................................4
5.3功能要求......................................11
5.4设计条件......................................11
5.5确认试验......................................12
6材料............................................12
6.1    总则.......................................12
6.2金属........................................12
6.3非金属.......................................13
6.4可追溯性......................................13
7质量控制要求........................................13
7.1    总则.......................................13
7.2文件保存......................................13
7.3人员资质......................................13
7.4校准........................................13
7.5尺寸检验......................................14
7.6螺纹检验......................................14
7.7焊接和钎焊.....................................14
7.8热处理设备.....................................14
7.9涂覆、堆焊和表面处理................................14
7.10金属材料.....................................15
7.11非金属材料....................................16
7.12 NDE 要求...............................   16
8检测...........................................19
8-1    总则.......................................19
8.2    NRV确认试验..................................19
8-3    NRV确认试验装置的一般要求...........................19
8.4    NRV设计确认试验程序..............................20
GB/T 25429—2019
8-5    NRVM气（N‘）压力试验 ............................20
8.6    NRV水压试验...................................20
8.7    NRV循环试验...................................20
8-8    NRV冲蚀试验《按表A.1记录结果）........................21
8.9    NRV浮动短节和NRV定位接头试验.........................21
8-10 NRV泄压接头试验................................21
8-11密封材料确认试竅..................................22
8-12产品岀厂駿收试验..................................22
9标志、文件和运输准备....................................24
9.1标志.........................................24
9.2文件.........................................24
9.3运输准备.......................................25
附录A （规范性附录）测试数据................................26
参考文献...........................................29
8-5    NRVM气（N‘）压力试验 ............................20
8.6    NRV水压试验...................................20
8.7    NRV循环试验...................................20
8-8    NRV冲蚀试验《按表A.1记录结果）........................21
8.9    NRV浮动短节和NRV定位接头试验.........................21
8-10 NRV泄压接头试验................................21
8-11密封材料确认试验..................................22
8-12产品岀厂駿收试验..................................22
9标志、文件和运输准备....................................24
9.1标志.........................................24
9.2文件.........................................24
9.3运输准备.......................................25
附录A （规范性附录）测试数据................................26
参考文献...........................................29