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Standard Insuued on: 1997-12 |
Category No.: | SY | Valid Status: | superseded |
Issued Organization: | Issued Date: | 1997-12-28 | |
Implemented Date: | 1998-6-1 | Abolished Date: | 2010-10-01 |
Superseded Standard.: | GB/T 9711.2-1999 Petroleum and natural gas industries-Steel pipe for pipelines-Technical delivery conditions-Part 2:Pipes of requirements class B SY/T 0422-2010 Specification for Construction of Oil and Gas Filed Gathering and Transmission Pipeline |
Superseded Date: | 2010-10-1 |
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