1) шов
2) паз
3) стык
4) трещина [c gray](в металле)
- butt seam
- caulked seam
- chain riveted seam
- circumferential seam
- donble butt strap seam
- girth seam
- flanged seam
- lapped seam
- longitudinal seam
- open seam
- painted seam
- seam rip
- reinforced seam