Chinese Classification
Professional Classification
ICS Classification
Latest
Value-added Services
|
Standard Insuued on: 2017-03 |
Category No.: | NB | Valid Status: | superseded |
Issued Organization: | China Energy Aminidstration | Issued Date: | 2017-03-28 |
Implemented Date: | 2017-8-1 | Abolished Date: | |
Superseded Standard.: | NB/T 47018.4-2022 Technical conditions for ordering welding materials for pressure equipment - Part 4: Submerged arc welding wire and flux |
Superseded Date: | 2022-12-31 |
Tel: +86-10-8572 5655 | Fax: +86-10-8581 9515 | Email: coc@codeofchina.com | QQ: 672269886 |
Copyright: TransForyou Co., Ltd. 2008-2040 |