钢管
steel pipe［piping，tube，tubing］◇API标准钢管*，承压钢管pressure-resistant pipe，带翅［加肋］钢管finned steel tube，单体液压支柱钢管*，镀锌钢管galvanized steel pipe，高(抗拉)强度钢管high tensile steel tube，焊接钢管*，挤压钢管extruded pipe，精密钢管precision steel pipe，离心铸造钢管材*，双层卷焊钢管*，无缝钢管*，轴承钢管ball bearing tubing |