China Factory Price High Purity 99.999% 5n He Cylinder Gas Helium

• CAS No.: 7440-59-7
• Formula: He
• EINECS: 231-168-5
• Constituent: Industrial Pure Air
• Grade Standard: Electronic Grade
• Chemical Property: Non-Flammable Gas
• Model NO.: Helium
• Product Name: Helium
• Cylinder Standard: DOT/ISO/GB
• Cylinder Pressure: 15MPa/20MPa
• Valve: Qf-2/Cga580
• Melting Point: -272.2 C
• Boiling Point: -272.2 C
• Appearance: Colorless, Odorless
• Transport Package: He Cylinder
• Specification: 4L 8L 40L 47L 50L
• Trademark: CMC
• Origin: China
• HS Code: 2812191090
• Production Capacity: 3000piece/Month

Product Description

Product Description

Helium gas is a colorless, odorless, and tasteless gas that belongs to the noble gas group on the periodic table. It is the second lightest element, after hydrogen, and has an atomic number of 2. Helium is chemically inert, meaning it does not readily react with other elements or compounds.

Properties of Helium Gas:

• Density: Helium is much lighter than air and has a density of about 0.1785 grams per liter, which is why helium-filled balloons and airships can float.
• Boiling and Melting Points: Helium has the lowest boiling and melting points of all the elements and remains in a gaseous state even at extremely low temperatures. Its boiling point is -268.93 degrees Celsius (-452.07 degrees Fahrenheit), and its melting point is -272.2 degrees Celsius (-457.96 degrees Fahrenheit).
• Thermal Conductivity: Helium has excellent thermal conductivity, which makes it useful in cooling applications, such as in cryogenics and superconductivity research.
• Non-Flammable: Helium is non-flammable and does not support combustion, which makes it a safe gas to use in various applications.

Uses of Helium Gas:

1. Balloons: One of the most well-known uses of helium is filling balloons to make them float. The low density of helium compared to air causes the balloon to rise.
2. Airships and Blimps: Helium's buoyancy makes it suitable for filling airships and blimps, providing them with lift.
3. Welding: Helium is often used as a shielding gas in welding processes, such as tungsten inert gas (TIG) welding. It helps protect the weld area from atmospheric gases, preventing oxidation and ensuring a cleaner weld.
4. Cooling Applications: Helium's low boiling point and excellent thermal conductivity make it valuable in cooling applications, particularly in cryogenics, superconductivity research, and cooling magnets in magnetic resonance imaging (MRI) machines.
5. Breathing Mixtures: Helium-oxygen mixtures, known as heliox, are used in deep-sea diving and medical treatments for respiratory conditions.
6. Leak Detection: Helium is used to detect leaks in various systems, including gas pipelines, refrigeration systems, and automotive components. Helium is easily detectable due to its low concentration in the atmosphere.
7. Scientific Research: Helium is widely used in scientific research, particularly in low-temperature physics, as a cooling medium for superconducting magnets and experiments involving ultra-cold temperatures.

It's important to note that helium is a finite resource on Earth, and its availability is limited. It is primarily obtained as a byproduct of natural gas extraction, and conservation and responsible usage are encouraged to prevent shortages.

Basic Info.

DOT Class	2.2	Un Number	1963
Cylinder Standard	DOT/ISO/GB	Cylinder Pressure	15MPa/20MPa
Valve	Qf-2/Cga580	Melting Point	-272.2 ºC
Appearance	Colorless, Odorless	Boiling Point	-272.2 ºC
Density	0.1786 Kg/M3	Molecular Weight	4.0026
Transport Package	40L, 47L, 50L	Specification	99.999%, 99.9999%
Trademark	CMC	Origin	Suzhou,China
HS Code	28042900	Production Capacity	20, 000 Tons/Yea

Specification:
 

Specification	Company Standard
He	≥ 99.999%
N2	≤ 2.0 ppm
O2+AR	≤ 1.0 ppm
H2	≤ 1.0 ppm
CO	≤ 0.5 ppm
CO2	≤ 0.5 ppm
Ne	≤ 1.0 ppm
CH4	≤ 0.5 ppm
Moisture	≤ 0.5 ppm

Company Profile

 

FAQ

Q: What is the min order?

 A: Different products have different min orders. It depends on the kind the gas and the cylinder specifications. Please feel free to contact me directly for your requirement.

Q: What is the package & storage details?

 A: Seamless steel cylinder with different valves, or as to your requirement.
Stored in the shady, cool, dry, ventilated warehouse, and keep away from sunlight and ramming.

Q: Shall we send back the cylinders to China to refill the gas again?

A: Yes, when you ordered our cylinders, next time, you can send back the cylinders to fill gas again. You just need to tell us before you export. We will handle all the import customs clearance formalities.

Q: What are your company's main sales products?

A: We mainly supply electronics specialty gas and mixtures needed by the electronics industry, such as NH3, SiH4, C4F8, O2, CF4, CO2, TEOS, etc.

Q: How to ensure the quality of your products?

A: We have passed the ISO 9001:2015 quality management system certification and ISO 14001:2015 environmental management system certification.

Q: How do you ship the product?

A: Usually we ship products by ocean shipping

Q: What is your advantage over other competitors?

A: We are a factory with excellent equipment and a high-quality control system, and our factory price is more competitive, fast shipment with high quality.
We have a full-time after-sales service providing solutions to various problems. After-sales service engineers standby 24 hours a day, and respond to customer needs when necessary at the first time.