本标准规定了业主负责对以下钢材进行无损检测（NDT）的人员的资格体系: -钢管.薄钢板、钢带、钢轨、棒材、型材、棒材和线材

This Standard specifies an employer's qualification system for non-destructive testing (NDT) personnel performing the testing of the following steel products under the employer's responsibility : — Steel tubes— Steel sheets, strips, rails, bars, sections, rods and wires