GB/T 9124.1-2019 (GB) and TCVN 1813:2009 (TCVN)
This page records how the Chinese standard GB GB/T 9124.1-2019 corresponds to TCVN TCVN 1813:2009, the standard used in the destination ASEAN market. The correspondence carries confidence level D — Same category only.
Comparison
| Item | China | ASEAN |
|---|---|---|
| Standard number | GB/T 9124.1-2019 | TCVN 1813:2009 |
| Issuing body | GB | TCVN |
| Title (English) | Steel pipe flanges - Technical conditions | Steel and iron. Determination of nickel content. Methods of chemical analysis |
| ICS category | 18 | 70 |
| Match confidence | D (Same category only) | |
What confidence level D means
The two standards fall in the same ICS category but address different subjects. Not an equivalence.
How to use this
A cross-reference tells you where to look, not what the answer is. If the level is A or B, ask your supplier for a test report against the ASEAN standard and compare the measured values with the limits in that standard. If the level is C or D, treat the two documents as separate requirements and check each clause. If the level is E, the product may be regulated under a different instrument in the destination country — for example a food-contact or electrical-safety regulation rather than a product standard — and you should confirm with the importing authority.
Next steps
Check the tariff and origin rule
Whether duty applies, and what a Form E certificate of origin would save.
Estimate the landed cost
Route options and total cost from your factory to the destination.
Find a factory that meets it
Chinese manufacturers able to produce to this standard.
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A test report against TCVN TCVN 1813:2009 is normally required at import. Testing bodies accredited for this standard can issue one — contact us for a referral, or ask your supplier whether they already hold a current report.
This correspondence is generated by comparing the scope, object and test-method terms of the two standards and is provided as a research aid. It is not a legal equivalence. Confirm the requirement with the destination standards body, a certified laboratory, or your customs broker before shipping. Record generated 2026-10-09.