ISO 11118:2015规定了用于压缩和液化气体的焊接、钎焊或无缝结构的不可再充装金属气瓶的材料、设计、检查、结构和工艺、制造工艺和制造测试的最低要求，包括对其不可再充装密封装置及其测试方法的要求。 注:按照本国际标准制造的钢瓶中允许的特定气体可能受到国家或国际要求的限制。 本国际标准适用于气瓶 a)液化气体的试验压力不超过250巴（即ph≤250巴），压缩气体的试验压力不超过450巴； b)试验压力与水容量的乘积不超过1 000巴·升（即ph V≤1 000巴·升）； c)试验压力超过45巴，水容量不超过5升（即ph>45巴，则V≤5升）。

ISO 11118:2015 specifies minimum 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 for compressed and liquefied gases including the requirements for their non-refillable sealing devices and their methods of testing. NOTE The specific gases permitted in cylinders constructed to this International Standard can be limited by national or international requirements. This International Standard is applicable to cylinders where a) the test pressure does not exceed 250 bar (i.e. p_h ≤ 250 bar) for liquefied gases and 450 bar for compressed gases; 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); 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).