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butt joint
butt joint
Butt joint:
  1. Single square groove butt joint
  2. Double bevel groove butt joint
  3. Single bevel groove butt joint
  4. Single J-groove butt joint
  5. Double J-groove butt joint
  6. Double V-groove butt joint
  7. Single V-groove butt joint
  8. Single U-groove butt joint
  9. Double U-groove butt joint
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