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Chinese National Standard Category: Bridge and culvert engineering

English Title: Steel thin-walled sonic-testing tubes for concrete bored piles
Chinese Title: 混凝土灌注桩用钢薄壁声测管
Standard No.: GB/T 31438-2015
Category No.: P28
Issued by: AQSIQ, SAC
Issued on: 2015-05-15
Implemented on: 2015-8-1
Status: valid
Superseded by:
Superseded on:
Abolished on:
Superseding:
Word Count:8500 words
Similar Standards: T/ZZB 028-2015   DB32/T 3939-2020   JTJ 024-1985   T/CHTS 20016-2021   T/CSPSTC 56-2020   DB46/T 591-2023   T/CSPSTC 70-2021   DB32/T 4338-2022   DB32/T 3950-2020   JT/T 901-2023   JT/T 1265-2019   JT/T 1269-2019   JT/T 391-2019   JT/T 1270.3-2019   JT/T 4-2019   JT/T 1268-2019   JT/T 1267-2019   JT/T 1266-2019   JT/T 823-2019   DB37/T 3549-2019  
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