标 准 编 号：JIS G7220-2003 简体中文标题：承压用无缝钢管.交货技术条件.第2部分:规定高温特性的非合金钢及合金钢(ISO规范) 繁体中文标题：承压用无缝钢管.交货技术条件.第2部分:规定高温特性的非合金钢及合金钢(ISO规范) English Name：Seamless steel tubes for pressure purposes -- Technical delivery conditions -- Part 2: Unalloyed and alloyed steels with specified elevated temperature properties (ISO specifications)