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GB8980-88 high-purity nitrogen technical indicators
Introduction
High purity nitrogen is essential in the manufacture of semiconductor chips, lasers, photomasks, and other technologies which require reliable, pure, and precise amounts of nitrogen. GB/T 8980-88 is a standard published by the China National Standardization Administration (CNSA) to ......
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GB/T 6052-93 Industrial Liquid Carbon Dioxide
GB/T 6052-93 Industrial Liquid Carbon Dioxide
This standard was formulated in accordance with the principle of equality and mutual benefit and based on the principle of securing uniformity, safety and efficacy. It is applicable to industrial liquid carbon dioxide with purity up to 99.99%.
1. Scope......
GB4884.2-1995 pure helium
Hydrogen is a chemical element with the symbol H and atomic number 1. With an atomic weight of 1.008, it is the lightest element on the periodic table. Hydrogen is the most abundant chemical substance in the universe, making up 75% of normal matter by mass and almost all of the helium in the unive......
GB/T3634-1995 Industrial Hydrogen Technical Indicators
Industrial Hydrogen Technical Index GB/T3634-1995
Hydrogen is an important fuel for industrial production. Rapid development and wide application in the petrochemical, chemical and atomic energy industries have promoted the development of hydrogen technology. Hydrogen technology has become a part......
GB/T7445-1995 pure hydrogen, high-purity hydrogen and ultra-pure hydrogen
GB/T 7445-1995 Hydrogen, High Purity Hydrogen and Ultra-high Purity Hydrogen
1 Scope
This standard specifies the requirements, sampling and chemical and physical testing of hydrogen, high purity hydrogen, and ultra-high purity hydrogen.
2 Normative References
The following documents are essent......
GB11174-89 liquefied petroleum gas
Liquefied Petroleum Gas (LPG)
Liquefied petroleum gas (LPG) is a valuable energy source that is widely used in many areas around the world. It is also commonly referred to as simply propane. LPG is a by-product of the refining of oil and natural gas and is composed of a number of different hydroc......
HG/T2863—1997 Argon gas for light bulbs
HG/T 2863-1997 Argon gas for lamp bulbs
This standard specifies the technical requirements, test methods, inspection rules, and product signs of argon gas for lamp bulbs.
This standard applies to argon gas for lamp bulbs (hereinafter referred to as gas).
This standardom does not apply to second......
JB6898-1997 Safety rules for the use of cryogenic liquid storage and transportation equipment
Low temperature liquid transportation equipment use safety rule
This regulation mainly arranges and stipulates the safety regulations for the use of low temperature liquid transportation equipment, in order to prevent accidents and ensure the safe production of users.
1. Equipment application re......
Prevention of Automobile Failure Caused by freezing
Preventing Frost-Related Car Malfunctions
The cold winter months can wreak havoc on your car, particularly in the form of frost-related malfunctions. In some regions, frost can make cars inoperable and is a leading cause of mechanical issues. To avoid the inconvenience and expense of dealing with......
There is a knack for removing rusted and broken screws
Removing Stubborn Rust or Broken Screws
Weve all been there with rusted screws, or screws that have snapped off in the metal. This can be an exceptionally frustrating ordeal, but it doesnt have to be. With the right methods, obtaining the screw or removing the rusted metal can actually be a quite......
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