Ultra-high-purity gas: refers to high-purity gas with a purity of 99.9999% or more. Commonly used are ultra-high-purity nitrogen, ultra-high-purity argon, ultra-high-purity oxygen, and ultra-high-purity hydrogen, which are usually packed in steel cylinders, Seamless Steel Gas Cylinder.
High-purity gas: high-purity oxygen, high-purity nitrogen, high-purity argon, high-purity hydrogen, high-purity acetylene, high-purity carbon dioxide, etc. It is commonly used in various laboratories and research institutes, and it is stored in a high-pressure steel cylinder like Nitrogen Gas Cylinder, oxygen cylinder.
Liquefied gas: liquid oxygen, liquid nitrogen, liquid argon, liquid carbon dioxide, etc. It is generally transported in Dewar tanks or dewar flask, and lying down is absolutely prohibited.
Medical gas: The most common ones are medical oxygen and nitrous oxide. Medical oxygen is by no means high-purity oxygen. It is actually a proportional mixture of oxygen and other gases. Patients at home who need oxygen for a long time should go to professional medical institutions to purchase household oxygen. Hospitals are generally equipped with liquid oxygen storage tanks, oxygen cylinders, and some hospitals transport oxygen to the beds through pipelines.
Ordinary gas: Refers to the gas of lower purity used in industrial production. The common ones are oxygen, argon, nitrogen, dry air, acetylene, carbon dioxide, etc., which are generally packaged and transported in industrial gas cylinders, for example, Industrial Nitrogen Cylinder.
Mixed gas: a mixture of two or more gases prepared in proportion according to customer requirements. Divided into several categories, laser mixed gas, welding mixed gas, standard calibration mixed gas, etc. Generally use industrial gas cylinders for packaging and transportation.
Special gas: refers to rare gas and electronic gas. Rare gases include krypton, neon, xenon, helium, etc.; electronic gases include nitrogen trifluoride, silane, etc. It is generally packed and transported in steel cylinders.
Gas container:
Gas cylinder: Cylinder is a high-pressure vessel for storing and transporting gas. It is generally made of alloy structural steel by hot punching and pressing, and is cylindrical. The shoulder of the gas cylinder is marked with a steel stamp of working pressure, test pressure, volume, weight, and other information.
Aluminum alloy seamless gas cylinder: using aluminum alloy with good process performance and corrosion resistance, the round slab is first punched into a cup shape, then extruded to the required size, and finally the top is isothermally formed, and then subjected to high temperature solid-melting treatment , Water quenching and artificial aging.
Dewar tank: adopts high vacuum multilayer insulation method to ensure low evaporation rate. Mainly used to transport and store liquid oxygen, liquid nitrogen, liquid argon, liquefied natural gas, and liquid carbon dioxide.
Cryogenic liquid storage tank: refers to a double-layer insulation and low-temperature resistant structure container, with vacuum powder or multilayer winding insulation in the middle. The specification is generally 5 to 200m³ (large-scale can be customized), usually pressure is 0.8MPa, 1.6MPa, 2.2MPa, others Pressure needs to be customized, including liquid oxygen storage tanks, liquid nitrogen storage tanks, liquid argon storage tanks, liquid carbon dioxide storage tanks, and LNG storage tanks.
