美利体育登录入口官网:SS-EN 10217-3:2019
压力用焊接钢管 技术交货条件 第3部分:具有规定室温、高温和低温性能的电焊及埋弧焊合金细晶粒钢管
Welded steel tubes for pressure purposes - Technical delivery conditions - Part 3: Electric welded and submerged arc welded alloy fine grain steel tubes with specified room, elevated and low temperature properties