| 摘要 |
PURPOSE: A pipe coupling device is provided to facilitate the manufacturing of a coupling for groove fitting and shorten a construction period by manufacturing the coupling for pipes through sheet metal press processing. CONSTITUTION: A pipe coupling device comprises two couplings (2, 3) and a coupling joint (4). The coupling joint joins two couplings. The cross section a-a of a coupling is shaped into aΠ. A catching protrusion (5) is formed inside the coupling. The coupling is made by sheet metal press processing. |
