NB/T 20007.28-2014Stainless steel for pressurized water reactor nuclear power plants - Part 28: Class 3 pressure-retaining austenitic-ferritic (duplex) stainless steel castings for seawater application (English PDF)

NB/T 20007.28-2014 is the English-translated version of 压水堆核电厂用不锈钢 第28部分：3级耐海水腐蚀奥氏体-铁素体双相不锈钢承压铸件.

Part 28 of NB/T 20007 covers class 3 pressure-retaining castings of austenitic-ferritic duplex stainless steel intended for seawater service in pressurized water reactor nuclear power plants, and carries recommended status within the Chinese energy industry standards.

Its subject is a seawater corrosion resistant material, classified with corrosion-resistant steels in the international scheme. The standard fixes the manufacturing requirements, the chemical composition and the mechanical properties of these castings, and gives the test methods and the non-destructive examination by which they are accepted.

Chemical analysis references include GB/T 223.5, GB/T 223.11, GB/T 223.36 and GB/T 223.68. Issued on 15 October 2014, it has applied since 1 March 2015.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 16 pages — is available in the English PDF.

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