The difference between non refillable welded steel cylinders and gas cylinders for industrial use

There are many differences between industrial non refillable welded steel cylinders and gas cylinders (usually referring to liquefied petroleum gas cylinders), and the following are the main differences:

Purpose and filling medium

Industrial non refillable welded steel cylinders: mainly used in the industrial field to fill specific low-pressure liquefied gases, such as refrigerants, chemical raw materials, etc., and clearly marked as non refillable. They are scrapped after one use.

Gas cylinder (liquefied petroleum gas steel cylinder): mainly used for gas supply in civil and commercial fields, filled with liquefied petroleum gas, can be refilled and used repeatedly, and requires regular inspection and maintenance.

Design and Manufacturing Standards

Industrial non refillable welded steel cylinders: The implementation standard is GB/T 17268, which has strict limitations on test pressure, volume, safety relief devices, etc. The volume is usually small (≤ 25L), and safety devices such as bursting discs are required to be installed.

Gas tank (liquefied petroleum gas cylinder): The implementation standard is GB 5842, etc., with a wider range of design pressure and volume, usually 10L, 15L, 50L, etc. The structural design pays more attention to durability and reusability.

safety device

Industrial non refillable welded steel cylinders: Explosive discs must be installed and welded to the cylinder body for fixation. The safe discharge area is calculated based on the volume to ensure automatic pressure relief in case of overpressure.

Gas cylinder (liquefied petroleum gas steel cylinder): Generally equipped with easy to fuse gold plugs or safety valves, some models may have multiple safety devices at the same time to adapt to different working conditions.

Exterior Identification

Industrial non refillable welded steel cylinders: The cylinder body is usually marked with words such as "limited to one-time filling" and "strictly prohibited from refilling", and has clear information on the filling medium, large filling volume, test pressure, etc.

Gas cylinder (liquefied petroleum gas steel cylinder): The cylinder body is marked with the words "liquefied petroleum gas", and the cover is printed with information such as the manufacturer's name, manufacturing date, inspection cycle, etc. The color is usually silver gray.

Usage management

Industrial non refillable welded steel cylinders: After use, they must be scrapped by the filling unit or property rights unit and cannot be refilled or circulated again.

Gas cylinder (liquefied petroleum gas steel cylinder): It needs to be inspected regularly, with a service life of generally 15 years. After expiration, it needs to be scrapped and replaced. During use, it is necessary to comply with gas safety regulations and regularly inspect valves, pipelines, and other components.

In summary, non refillable welded steel cylinders for industrial use are disposable gas cylinders designed for specific industrial purposes, while gas cylinders (liquefied petroleum gas cylinders) are refillable gas cylinders widely used in both civilian and commercial fields. There are significant differences between the two in terms of usage, design standards, safety devices, and usage management.