CGA Standards

What is CGA?

Founded in 1913, the Compressed Gas Association is dedicated to the development and promotion of safety standards in the industrial, medical, and food gases industry.

CGA publications address a wide range of standards, technical information and recommendations for best practices in the manufacture, storage, transportation, distribution, and use of industrial gases, cryogenic liquids and other products, including gas-handling equipment.

From industrial gases used in welding and metal fabrication, to medical gases used in hospitals and clinics, CGA members are dedicated to ensuring that these gases are handled safely and responsibly. With over 100 years of industry experience, CGA is the go-to resource for regulators, policymakers, and gas industry professionals looking for guidance on the safe production, transportation, and use of compressed gases.


CGA Standards

CGA maintains a library of over 350 publications, safety alerts, safety bulletins, technical bulletins, technical reports, training materials, and our Handbook of Compressed Gases. CGA’s positions address safety and technical information related to the manufacture, transportation, storage, transfilling, and disposal of gases (liquefied, non-liquefied, dissolved, and cryogenic); and the containers and valve which hold compressed gases.

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Gain a Competitive Edge with CGA Standards on:


Technical, safety, and other matters directly concerning acetylene gas, equipment, and operating procedures affecting the compressed gas industry.

Atmospheric Gases and Equipment

Cryogenic and non-cryogenic processes and equipment for the separation and liquefaction of the atmospheric gases, helium, and hydrogen. Including product handling equipment, such as compressors, cold boxes, expansion machines, pumps, bulk storage, pipelines, bulk gas systems at consumer sites, and tanker loading facilities (tankers, customer station design and cylinder handling facilities are excluded).

Bulk Gas Distribution Equipment and Standards

Standards for the design, manufacture, operation, and maintenance of bulk distribution equipment and systems for industrial gases, cryogenic liquids, and related products.

Carbon Dioxide

Safety publications that relate to the carbon dioxide industry. Provides guidance to government regulators in the creation of rules and regulations. Encourages standardization within affecting the compressed gas industry. the carbon dioxide industry, i.e., specifications for carbon dioxide and standards for related equipment in order to enhance safety, quality, and productivity.

Gas Cylinder Specifications

Gas container safety and usage standards, safe practices, and sound manufacturing practices for the gas industry. Standardized compliance with regulatory and industry principles related to gas containment. Critical specifications designed for gas container manufacturers, independent inspection agencies, gas manufacturers, regulatory agencies, equipment manufacturers, and other members of the gas industry.

Medical Grade Equipment

Standards and practices for compliance with regulatory and industry principles related to medical drug and device gases.

Natural Gas Technology

Safe practices with regulatory and industry principles related to compressed natural gas (CNG) and
liquefied natural gas (LNG).

Cylinder Valves

Industry standards for valves and their inlet and outlet connections, (excluding pressure relief devices) which may be used on cylinders, and other containers.

Food Grade Gases

Standardized safe practices with regulatory and industry principles related to food and beverage gases.

Process Safety

Guides and processes for the identification, development, and communication of risk management system best practices related to process safety in the compressed gas industry. This includes providing guidance on information regarding process safety that is needed in support of industrial gas facilities and industrial gas supply systems provided at business sites.

Hydrogen Technology

Classification guidelines and standards for pressure vessels and other shipping containers (manufacturing, use, and requalification), associated appurtenances, and storage and filling systems used in metal hydride and alternate hydrogen fuel technologies.

Specialty Gases

Technical knowledge with regards to the manufacture, packaging, transportation, and use of specialty gases across various industries including chemical process, semiconductor, environmental, etc.


Publications to address the safe operation of plants producing hydrogen, carbon monoxide and synthesis gas (commonly known as HyCO Plants) and related materials

Liquified Petroleum Gas

Product and safety information for producers, marketers, and users of liquefied petroleum gases through uniform, standardized technical and safety guidelines and standards for the transportation, equipment, containers, filling, storage, and handling of these gases.