Non-destructive testing - Ultrasonic testing of austenitic and austenitic-ferritic stainless steel flat products of thickness equal to or greater than 6 mm (reflection method); English version of DIN EN 10307
无损检测——厚度等于或大于6mm的奥氏体和奥氏体-铁素体不锈钢扁平产品的超声波检测(反射法);德文版EN 10307:2001