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GB standards are the China national standards; Prefix code GB are Mandatory standards, GB/T are Recommended standards; All products or service must be compliance with GB standards; If you want to export products or services to huge Chinese market, need ensure they are meet the requirements of GB china national standards; We provide Chinese GB standards and English version GB standards Lookup, Translate, Download, Imported Commodity GB standards Testing and Compliance review services. |
| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 23901.2-2009 |
Non-destructive testing - Image quality of radiographs - Part 2: Image quality indicators (step/hole type) - Determination of image quality value 无损检测 射线照相底片像质 第2部分：阶梯孔型像质计 像质指数的测定 |
China National Standards Determination of ima |
 English PDF |
| GB/T 23901.1-2009 |
Non-destructive testing - Image quality of radiographs - Part 1: Image quality indicators (wire type) - Determination of image quality value 无损检测 射线照相底片像质 第1部分：线型像质计 像质指数的测定 |
China National Standards Determination of ima |
English PDF |
| GB/T 23901.5-2009 |
Non-destructive testing - Image quality of radiographs - Part 5: Image quality indicators (duplex wire type) - Determination of image unsharpness value 无损检测 射线照相底片像质 第5部分：双线型像质计 图像不清晰度的测定 |
China National Standards Determination of ima |
English PDF |
| GB/T 20504-2006 |
Anodizing of aluminium and its alloys - Visual Determination of image clarity of anodic oxidation coatings - Chart scale method 铝及铝合金阳极氧化 阳极氧化膜影像清晰度的测定 条标法 |
China National Standards Determination of ima |
English PDF |
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