ISO 4991:2005涵盖了受压零件的钢铸件。
包括用于制造符合压力容器规范的部件和不符合规范的部件的材料。
ISO 4991:2005涉及由非合金和合金钢等级制造的铸件。
ISO 4991:2005 covers steel castings for parts subjected to pressure.
It includes materials which are used for the manufacture of components subject to pressure vessel codes and components not subject to codes.
ISO 4991:2005 relates to castings manufactured from unalloyed and alloyed steel grades.