直缝电焊钢管

  • 网络Longitudinal electric resistance welded steel tubes
直缝电焊钢管直缝电焊钢管
  1. GB/T13793-1992直缝电焊钢管管道环焊缝多焊炬自动内焊机关键技术分析

    Analysis on key technologies for pipeline internal circumferential automatic welding machine with multi-torch

  2. 高频直缝电焊钢管焊接质量的控制

    Control of Weld Quality of Longitudinally High-Frequency Welded Pipe