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Chinese National Standard Category: Railway construction product maintenance and service

English Title: Maintenance performance Part 21:Ultrasonic testing of rail welds
Chinese Title: 工务作业第21部分:钢轨焊缝超声波探伤作业
Standard No.: TB/T 2658.21-2007
Category No.: S17
Issued by: Ministry of Railways
Issued on: 2007-04-23
Implemented on: 2007-10-1
Status: valid
Superseded by:
Superseded on:
Abolished on:
Superseding:
Word Count:13500 words
Similar Standards: TB/T 3148-2007   TB/T 2658.21-2007   TB/T 1632.2-2005   TB/T 1632.3-2005   TB/T 1632.4-2005   TB/T 3120-2005   TB/T 1632.1-2005   TB/T 3089-2004  
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