pipe seam

例句：

1. 1.The pipe seam is visible where the pipes meet.
   管道接合处可见焊缝。
2. 2.The welding process is crucial for ensuring the structural integrity of the pipe seam.
   焊接过程对于确保管道焊缝的结构完整性至关重要。
3. 3.The engineer carefully inspected the pipe seam to ensure it was properly sealed.
   工程师仔细检查了管道焊缝，以确保其正确密封。