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NB/T 31025-2012Ring Type Forgings of Wind Turbine Generator System (English PDF)

风力发电机组环形锻件

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Issued by

NEA

Level / Type

Industry · Recommended

Issue date

August 23, 2012

Implementation date

December 1, 2012

Scope

NB/T 31025-2012 is the English-translated version of 风力发电机组环形锻件.

NB/T 31025-2012 is the Chinese energy industry standard for the ring type forgings of a wind turbine generator system, meaning the tower flanges, the slewing rings and the forged rings of that family.

It states the technical requirements for these forgings and adds the test methods, the inspection rules, the marking, the packing and the transport that go with them.

The standard is written for the ring forgings of wind turbines whose swept area is 200 m2 or more. Its checks lean on a wide set of GB/T documents, among them the GB/T 223 series, GB/T 225, GB/T 228.1, GB/T 229, GB/T 231.1 and GB/T 1184-1996. Issued on 23 August 2012, it has applied since 1 December 2012.

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Document preview — NB/T 31025-2012

National Standard of the People's Republic of China

ICS: 27.180

Issued by: National Energy Administration of the People's Republic of China

Foreword
Scope
Normative references
About this standard
Classification and status

1 Foreword

NB/T 31025-2012 was issued by NEA on 23 August 2012 and has been in force since 1 December 2012.

2 Scope

This standard is the Chinese energy industry standard for the ring type forgings of a wind turbine generator system, meaning the tower flanges, the slewing rings and the forged rings of that family. It states the technical requirements for these forgings and adds the test methods, the inspection rules, the marking, the packing and the transport that go with them. The standard is written for the ring forgings of wind turbines whose swept area is 200 m2 or more. Its checks lean on a wide set of GB/T documents, among them the GB/T 223 series, GB/T 225, GB/T 228.1, GB/T 229, GB/T 231.1 and GB/T 1184-1996.

3 Normative references

NB/T 31025-2012 cites the following standards, which apply in full or in part through the references made to them in its clauses.

GB/T 222

GB/T 223.5

GB/T 223.9

GB/T 223.12

GB/T 223.14

GB/T 223.16

GB/T 223.19

GB/T 223.23

GB/T 223.26

GB/T 223.37

GB/T 223.40

GB/T 223.62

GB/T 223.63

GB/T 223.67

GB/T 223.69

GB/T 225

GB/T 228.1

GB/T 229

GB/T 231.1

GB/T 1184-1996 — Geometrical tolerancing. Geometrical tolerance for features without individual tolerance indications

4 About this standard

Issued by: NEA

English translation: about 15 pages

5 Classification and status

International classification (ICS): 27.180

Prefix NB/T: recommended standard.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 223.16

Similar standards

GB/T 37995-2019|NB/T 10318-2019|NB/T 31012-2019|NB/T 31013-2019|NB/T 31107-2017|NB/T 31125-2017

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