GB 4844.2-1995
Pure helium (English Version)
- Standard No.
- GB 4844.2-1995
- Language
- Chinese, Available in English version
- Release Date
- 1995
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- 2012-10
- Replace By
- GB/T 4844-2011
- Latest
- GB/T 4844-2011
- Replace
- GB 4844-1984 GB 4845-1984
- Scope
- This standard specifies the technical requirements, inspection methods, inspection rules, and product packaging, marking, storage, and transportation of pure helium products. This standard applies to bottled gaseous helium extracted from air, natural gas or factory bleed gas by cryogenic method, mainly used for welding, diving breathing, special metal smelting, carrier gas for chromatographic analysis, and gas for pressurization and cleaning, etc.
GB 4844.2-1995 history
- 2011 GB/T 4844-2011 Pure helium,high pure helium and ultra pure helium
- 1995 GB/T 4844.1-1995 Industrial helium
- 1984 GB 4845-1984 Nitrogen test method
GB 4844.2-1995 Pure helium has been changed from GB 4845-1984 Nitrogen test method.
GB 4844.2-1995 Pure helium was changed to GB/T 4844-2011 Pure helium,high pure helium and ultra pure helium.