NB/T 31025-2012
Ring type forgings of wind turbine generator system (English Version)
- Standard No.
- NB/T 31025-2012
- Language
- Chinese, Available in English version
- Release Date
- 2012
- Published By
- Professional Standard - Energy
- Status
- Latest
- NB/T 31025-2012
- Replace By
- LST EN 61788-12-2014
- Scope
- This standard specifies the technical requirements, test methods, inspection rules, marking, packaging and transportation of wind turbine tower flanges, slewing ring and other annular forgings. This standard is applicable to annular forgings such as wind turbine tower flanges and slewing bearing rings with a swept area of wind turbines greater than or equal to 200m.
NB/T 31025-2012 Referenced Document
- GB/T 1184-1996 Geometrical tolerancing--Geometrical tolerance for features without individual tolerance indications
- GB/T 1804-2000 General tolerances Tolerances for linear and angular dimensions without individual tolerance indications
- GB/T 222 Permissible tolerances for chemical composition of steel products
- GB/T 223.12 Methods for chemical analysis of iron,steel and alloy--The sodium carbonate separation-diphenyl carbazide photometric method for the determination of chromium content
- GB/T 223.14 Methods for chemical analysis of iron,steel and alloy The N-benzoy-N-phenylhydroxylamine extraction photometric method for the determination of vanadium content
- GB/T 223.16 Methods for chemical analysis of iron,steel and alloy--The chromotropic acid photometric method for the determination of titanium content
- GB/T 223.19 Methods for chemical analysis of iron,steel and alloy--The neocuproine-chloroform extraction photometric method for the determination of copper content
- GB/T 223.23 Iron,,steel and alloy.Determination of nickel content.The dimethylglyoxime spectrophotometric method
- GB/T 223.26 Iron,steel and alloy.Determination of molybdenum content.The thiocyanate spectrophotometric method
- GB/T 223.37 Iron, steel and alloy—Determination of nitrogen content—Indophenol blue spectrophotometric method after distillation separation*， 2020-06-02 Update
- GB/T 223.40 Iron, steel and alloy Determination of niobium content by the sulphochlorophenol S spectrophotometric method
- GB/T 223.5 Steel and iron.Determination of acid-soluble silicon and total silicon content.Reduced molybdosilicate spectrophotometric method
- GB/T 223.62 Methods for chemical analysis of iron, steel and alloy--The butyl acetate extraction photometric method for the determination of phosphorus content
- GB/T 223.63 Iron, steel and alloy—Determination of manganese content—Sodium (potassium) periodate spectrophotometric method*， 2022-07-11 Update
- GB/T 223.67 Iron,steel and alloy.Determination of sulfur content.Methylene blue spectrophotometric method
- GB/T 223.69 Iron,steel and alloy.Determination of carbon contents.Gas-volumetric method after combustion in the pipe furnace
- GB/T 223.9 Iron,steel and alloy.Determination of aluminium content.Chrome azurol S photometric method
- GB/T 225 Steel Hardenability test by end quenching (Jominy test)
- GB/T 228.1 Metallic materials—Tensile testing—Part 1: Method of test at room temperature*， 2021-12-31 Update
- GB/T 229 Metallic materials—Charpy pendulum impact test method*， 2020-09-29 Update
- GB/T 231.1 Metallic materials—Brinell hardness test—Part 1: Test method*， 2018-05-14 Update
- GB/T 4336 Determination of multi-element content in carbon steel and medium and low alloy steel Spark discharge atomic emission spectrometry (conventional method) Amendment No. 1
NB/T 31025-2012 history
- 2012 NB/T 31025-2012 Ring type forgings of wind turbine generator system
NB/T 31025-2012 Ring type forgings of wind turbine generator system was changed to LST EN 61788-12-2014 Superconductivity -- Part 12: Matrix to superconductor volume ratio measurement - Copper to non-copper volume ratio of Nb3Sn composite superconducting wires (IEC 61788-12:2013).
