NB/T 20007.25-2021 Active
NB/T 20007.25-2021 Pressurized water reactor nuclear power plant stainless steel for piping and equipment Part 25: Non-pressure cast inner parts of austenitic-ferritic stainless steel grades A, B, and C for use in pumps
Abstract
This document specifies the requirements for the manufacture, chemical composition, mechanical properties, non-destructive testing, removal and repair of defective parts, dimensions, and appearance of non-pressure-bearing castings made of austenitic-ferritic stainless steel (A, B, and C grades) used in pump systems of pressurized water reactors. This document applies to non-pressure-bearing castings made of austenitic-ferritic stainless steel (ZG04Cr20Ni9) used in pump systems of pressurized water reactors, including A-grade (including A1 and A2), B-grade (including B1 and B2), and C-grade products.
General Product Information
| Document Type | Industry standards-Energy |
|---|---|
| Standard Status | Active |
| Standard Code | NB/T 20007.25-2021 |
| CCS | Casting |
| ICS | Iron and steel castings |
| Implement Date | 2021-07-01 |