NB/T 20259.3-2021 Bill of Quantities Valuation Specifications for Nuclear Power Plant Construction Project Part 3: Process Equipment and Piping Installation Engineering (English Version)
2021NB/T 20259.3-2021 Bill of Quantities Valuation Specifications for Nuclear Power Plant Construction Project Part 3: Process Equipment and Piping Installation Engineering
2014NB/T 20259.3-2014 Code of valuation on bill of quantities of nuclear power plant construction works.Part 3: Process equipment and pipe installation