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Chinese National Standard Category: Metal nondestructive testing method

English Title: Seamless and welded (except submerged arc-welded) steel tubes for pressure purposes - Ultrasonic testing for the detection of laminar imperfections
Chinese Title: 承压无缝和焊接(埋弧焊除外)钢管分层的超声检测
Standard No.: GB/T 20490-2006
Category No.: H26
Issued by: AQSIQ,SAC
Issued on: 2006-9-12
Implemented on: 2007-2-1
Status: superseded
Superseded by:GB/T 20490-2023
Superseded on:2024-3-1
Abolished on:
Superseding:
Word Count:4000 words
Similar Standards: DB32/T 4485-2023   GB/T 14143-1993   GB/T 4058-1995   GB 246-1982   SDJ 67-1983   T/CIRA 14-2020   GB/T 242-1982   GB/T 3310-2023   NB/T 47013.14-2023   NB/T 47013.11-2023   GB/T 11260-2023   GB/T 42662-2023   GB/T 42673-2023   GB/T 42664-2023   GB/T 20490-2023   GB/T 42677-2023   GB/T 41966-2022   GB/T 4162-2022   GB/T 40791-2021   GB/T 40385-2021  
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