ISO 17577:2016规定了通过脉冲回波技术对未涂层扁钢产品内部不连续性进行自动和/或手动超声波检测的方法。 适用于标称厚度为6 mm至200 mm的非合金或合金扁钢产品。然而，本国际标准可适用于奥氏体和奥氏体-铁素体钢，前提是噪声信号的振幅与回波检测阈值的振幅之间的差异足以满足固定极限。除非另有约定，对于焊接钢管用扁钢产品的试验，ISO 10893-9适用。 制造商可自行决定使用其他测试技术（例如，通过传输）或其他测试设备，前提是它们给出的结果与在本国际标准条件下获得的结果相同。如有争议，仅以本国际标准中规定的方法为准。 厚度小于6 mm且超过200 mm的扁平产品的测试可能是有关各方之间达成的特殊协议的主题。 测试通常在生产地或供应商的场所进行。

ISO 17577:2016 specifies a method for the automated and/or manual ultrasonic testing of uncoated steel flat products for internal discontinuities by the pulse echo technique. It is applicable to non-alloyed or alloyed steel flat products, in a nominal thickness range of 6 mm to 200 mm. However, this International Standard may be applied to austenitic and austenitic-ferritic steels, provided that the difference between the amplitude of the noise signal and that of the echo detection threshold is sufficient for the limit fixed. Unless otherwise agreed, for testing of steel flat products for welded steel tubes, ISO 10893？9 applies. Other techniques of testing (e.g. by transmission) or other test equipment may be used at the manufacturer's discretion, provided that they give identical results to those obtained under the conditions of this International Standard. In the event of a dispute, only the method defined in this International Standard will prevail. Testing of flat products, of thickness less than 6 mm and over 200 mm, may be the subject of special agreements between the parties concerned. Testing is normally carried out in the place of production or on the premises of the supplier.