Standard No.:	JB/T 4008-2020
English Name:	Non-destructive testing-test method for ultrasonic testing and evaluation of discontinuities by immersed pulse-echo longitudeinal waves
Chinese Name:	无损检测 液浸式超声纵波脉冲回波检测和评定不连续方法
Professional Classification:	JB    Professional Standard - Machinery
Issued by:	MIIT
Issued on:	2020-04-16
Implemented on:	2021-1-1
Status:	valid
Superseding:	JB/T 4008-1999 Recommended practice for immersed ultrasonic testing by the reflection method using pulsed longitudinal waves
Language:	English
File Format:	PDF
Word Count:	9000 words
Price(USD):	270.00
Delivery:	via email in 1~3 business day

本标准规定了使用脉冲纵波反射式探头与受检件（原材料或零部件）以浸没或液柱的耦合方式进行超声检测时应遵循的一般要求和检测程序，如图1所示。同时对设备、参考试块、评定规程以及检测报告作了详细要求。
本标准可作为供需双方确定技术协议时的参考资料，也可用于编制检测工艺规程。