气瓶 - 可再填充无缝钢气瓶和管道的设计 建造和测试 - 第2部分:淬火和回火钢瓶和拉伸强度大于或等于1 100 MPa的钢管

[中文适用范围]： 本文件规定了水容量不超过 450 升的可再充装无缝钢气瓶和管材的材料、设计、结构和工艺、制造工艺、制造时的检查和测试的最低要求。 适用于压缩、液化、溶解气体的气瓶及管子以及实际抗拉强度Rma≥1100MPa的调质钢瓶及管子。 它不适用于直径 >140 mm 且保证壁厚 a′ ≥ 12 mm 时，Rma 最大 > 1300 MPa 的气瓶和管子；对于直径 ≤ 140 mm 和保证壁厚，Rma 最大 > 1400 MPa 的气瓶和管子a′ ≥ 6 mm，因为超出这些限制，可能会适用其他要求。 [外文原描述]： This document specifies minimum requirements for the material, design, construction and workmanship, manufacturing processes, examination and testing at time of manufacture for refillable seamless steel gas cylinders and tubes with water capacities up to and including 450 l. it is applicable to cylinders and tubes for compressed, liquefied and dissolved gases and for quenched and tempered steel cylinders and tubes with an actual tensile strength R ma ≥ 1 100 MPa. It is not applicable to cylinders and tubes with R ma, max > 1 300 MPa for diameters >140 mm and guaranteed wall thicknesses a ′ ≥ 12 mm and for cylinders and tubes with Rma, max > 1 400 MPa for diameters ≤140 mm and guaranteed wall thicknesses a ′ ≥ 6 mm because, beyond these limits, additional requirements can apply.