本文件规定了通过射线检测发现的钢、镍、钛及其合金对接焊缝缺陷的验收等级。如果同意，验收等级可适用于其他类型的焊缝（如角焊缝等）或材料。 验收水平可能与焊接标准、应用标准、规范或规范有关。本文件假设射线检测已按照ISO 17636-1中RT-F（F=胶片）或ISO 17636-2中RT-S（S=射线检测）和RT-F进行- D（D=数字探测器）。

This document specifies acceptance levels for indications from imperfections in butt welds of steel, nickel, titanium and their alloys detected by radiographic testing. If agreed, the acceptance levels can be applied to other types of welds (such as fillet welds, etc.) or materials. The acceptance levels can be related to welding standards, application standards, specifications or codes. This document assumes that the radiographic testing has been carried out in accordance with ISO？17636？1 for RT-F (F = film) or ISO？17636？2 for RT-S (S = radioscopy) and RT-D (D = digital detectors).