| Std ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status |
| NB/T 20005.13-2019 | English | RFQ |
ASK
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3 days [Need to translate]
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(Carbon steel and low-alloy steel for pressurized water reactor nuclear power plants Part 13: Seamless steel tubes for heat transfer tubes of Class 2 and 3 heat exchangers)
| Valid |
| NB/T 20005.13-2012 | English | 639 |
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3 days [Need to translate]
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Carbon steel and low alloy steel for pressurized water reactor nuclear power plants. Part 13: Seamless drawn carbon steel tubes for class 2 and 3 heat exchangers
| Obsolete |