JB/T 8707-2014Rotor forgings without centre bore for steam turbines of 300 MW and above - Technical requirements (English PDF)

1 Foreword

JB/T 8707-2014 was issued by Ministry of Industry and Information Technology of the People's Republic of China on 6 May 2014 and has been in force since 1 October 2014.

It replaces the earlier edition JB/T 8707-1998.

2 Scope

This standard is the Chinese machinery industry standard for rotor forgings made without a centre bore for steam turbines of 300 MW and above. It covers the ordering requirements for these vacuum-treated alloy steel forgings, their manufacturing process, the technical requirements, the test methods and inspection rules, and acceptance together with the quality certificate. The classification is J32 in the Chinese scheme and 77.140.85 internationally, which places it with steel forgings for turbines. Chemical composition is determined by the GB/T 223 series of methods for the analysis of iron, steel and alloy. The document replaces JB/T 8707-1998.

3 Normative references

JB/T 8707-2014 cites the following standards, which apply in full or in part through the references made to them in its clauses.

GB/T 223.12

GB/T 223.13

GB/T 223.14

GB/T 223.17

GB/T 223.16

GB/T 223.18

GB/T 223.19

GB/T 223.20

GB/T 223.21

GB/T 223.22

GB/T 223.25

GB/T 223.28

GB/T 223.30

GB/T 223.3

GB/T 223.32

GB/T 223.33

GB/T 223.34

GB/T 223.36

GB/T 223.37

GB/T 223.

4 About this standard

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

English translation: about 15 pages

5 Related standards

Other editions:

JB/T 8707-1998 (earlier edition)

6 Classification and status

International classification (ICS): 77.140.85

Prefix JB/T: recommended standard.