ISO/TR 12931的这一部分适用于0.5升至0.5升（含0.5升）的所有尺寸的无缝钢制可再充装钢瓶 150升水容量，由抗拉强度（Rm）大于1 100 MPa的钢制成。 它也可以应用于由抗拉强度较低的钢制成的圆柱体。特别是，它提供了 指导现有ISO标准未来变更或开发先进标准的技术原理和背景 设计标准。

This part of ISO/TR 12931 applies to seamless steel refillable cylinders of all sizes from 0,5 l up to and including 150 l water capacity produced of steel with tensile strength (Rm) greater than 1 100 MPa. It can also be applied to cylinders produced of steels used at lower tensile strengths. In particular, it provides the technical rationale and background to guide future alterations of existing ISO standards or for developing advanced design standards.