GB/T8162和GB/T8163，结构用无缝钢管与输送流体用无缝钢管标准1：标准要求不一样，输送流体的要做涡流试验的，2：应用范围不一样，一是结构支撑，一个是输送流体(比如石油、水)3：8163的要求要高，可以代用8162，但反之不行

GB/T8162 and GB/T8163, structural seamless steel tube and conveying fluid seamless steel tube standards 1: different standards, conveying fluid to do eddy current test, 2: different scope of application, one is structural support, one is conveying fluid (such as oil, water) 3:8163 high requirements, can replace 8162, but vice versa

GB/T8162-1999(结构用无缝钢管)。主要用于一般结构和机械结构。其代表材质(牌号)：碳素钢20、45号钢;合金钢Q345、20Cr、40Cr、20CrMo、30-35CrMo、42CrMo等。

GB/T8162-1999 (seamless steel tube for structure). It is mainly used for general structure and mechanical structure. Its representative materials (grades): carbon steel 20, 45 steel; alloy steel Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo, etc.

GB/T8163-1999(输送流体用无缝钢管)。主要用于工程及大型设备上输送流体管道。

GB/T8163-1999 (seamless steel pipe for conveying fluid). It is mainly used for conveying fluid pipes on engineering and large equipment.