JB/T 4009-2020
Non-destructive testing contact ultrasonic longitudinal wave pulse echo detection and evaluation method of discontinuity (English Version)

Standard No.

JB/T 4009-2020

Language

Chinese, Available in English version

Release Date

2020

Published By

工业和信息化部

Latest

JB/T 4009-2020

Replace

JB/T 4009-1999

JB/T 4009-2020 history

• 2020 JB/T 4009-2020 Non-destructive testing contact ultrasonic longitudinal wave pulse echo detection and evaluation method of discontinuity
• 1999 JB/T 4009-1999 Recommended practice for ultrasonic pulse-echo straight-beam tesing by the contact method