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1 适用范围1.1 本实施方法概述了用接触法或液浸法斜射脉冲反射超声检测金属管材内不连续性的规程.纵向参考切槽这种人工不连续性用作校准超声检测系统的基本手段.若要进行与纵向检测一样的横向检测,本方法提供了采用横向切槽的检测方法.1.2本实施方法适用于外径大于或等于1/2英寸(12.7mm)的管类产品检验,只要检测参数附合和满足第11章的要求.然而,这些检测方法已成功应用于较小的管径
1 Scope of application 1.1 This method provides an overview of the procedure for the detection of discontinuities in metal pipes by contact or liquid-immersion oblique pulse reflection ultrasound. Artificial discontinuities, such as longitudinal reference groves, are used as basic means of calibrating ultrasonic testing systems. This method provides a method of inspection using transverse grooving to perform the same transverse inspection as longitudinal inspection.1.2 This method is suitable for inspection of tube products with an outer diameter greater than or equal to 1/2 inch (12.7 mm) as long as inspection The parameters fit and meet the requirements of Chapter 11. However, these test methods have been successfully applied to smaller pipe diameters