ISO 11118:2025

Gas cylinders — Non-refillable metallic gas cylinders — Specification and test methods

This document specifies requirements for the material, design, inspections, construction and workmanship, manufacturing processes, and tests at manufacture of non-refillable metallic gas cylinders of welded, brazed, or seamless construction. This document also specifies the requirements for the non-refillable sealing devices and their methods of testing. It is applicable to non-refillable metallic gas cylinders for compressed and liquefied gases.

NOTE??????????? The specific gases permitted in cylinders constructed to this document can be limited by national or international requirements.

This document is applicable to cylinders where:

a)?????? the test pressure does not exceed 250?bar¹⁾ (i.e.?p_h?=?250?bar) for liquefied gases and 450?bar for compressed gases; or

b)?????? the product of the test pressure and the water capacity does not exceed 1?000?bar·litres (i.e. p_h?V?=?1?000?bar l); or

c)??????? the test pressure exceeds 45?bar and the water capacity does not exceed 5?l (i.e. for p_h?>?45?bar, then V?=?5?l).

Edition	2025
Published Date	2025
Published By	International Standardization Organisation
Page Count	34