ISO 21172-1:2015规定了可再充装焊接钢制气体压力罐（以下简称罐）的材料、设计、制造、施工和工艺、检查和测试的最低要求，其容量为150 l至1000 l，压缩气体和液化气体的试验压力不超过300 bar。只覆盖圆柱形和球形容器。

ISO 21172-1:2015 specifies the minimum requirements for the material, design, fabrication, construction and workmanship, inspection, and testing at manufacture of refillable welded steel gas pressure drums, hereafter referred to as drums, of volumes 150 l to 1 000 l and up to 300 bar test pressure for compressed and liquefied gases. Only cylindrical and spherical containers are covered.