GB/T 3323.1-2019 Translated English of Chinese Standard (GB/T3323.1-2019): Non-destructive testing of welds -- Radiographic testing -- Part 1: X-and gamma-ray techniques with filmhttps://www.chinesestandard.net, 5. nov. 2021 - 37 sider This part of GB/T 3323 specifies the radiographic testing technology for fusion welding of metallic materials. This part applies to radiographic testing of welded joints of plates, pipes or other welded joints. This part does not include the acceptance level of radiographic testing of welded joints of metallic materials. |
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adopts the international allows image quality Appendix butt girth welds Categories of film contract contrast sensitivity double-wall single-shadow penetration eccentric penetration method external penetration method Figure 21 Figure B.1 film system fmin front & back gamma ray GB/T Grade A Grade grade A technology hole type image identically adopts image quality indicator image quality requirements image quality value international standard layout of single-wall Lead screen front meet the requirements metal intensifying screen method The ray minimum image quality Nomogram Non-destructive testing number of exposures outer diameter Penetrated thickness w/mm Penetration layout pipe butt quality indicator Grade quality indicator Table quality value minus radiographic film radiographic testing technology ray beam ray source recommended number replace ISO scattered rays shown in Figure single-shadow penetration method single-wall external penetration Stepped hole type tested workpiece thickness w/mm Image titanium tube voltage type image quality w/mm Image quality Wire type image X-ray