UNE-EN ISO 9809-1:2020
气瓶 可再充式无缝钢气瓶和管子的设计、制造和测试 第1部分:拉伸强度小于 1100 MPa 的调质钢瓶和管子
Gas cylinders - Design, construction and testing of refillable seamless steel gas cylinders and tubes - Part 1: Quenched and tempered steel cylinders and tubes with tensile strength less than 1 100 MPa (ISO 9809-1:2019)