| 摘要 |
<p>A coupling for pipe joint is provided to shorten the time for coupling and reduce the number of parts by assembling a pair of couplers without using bolt and nut. A coupling(10) for connecting pipes(5) comprises a pair of couplers(20) and fastening rings(30). The coupler is composed of two or more ports(21) and keys(22) protruded radially on the port side end. The fastening ring having a key groove(31) through which the key passes is inserted to the port side to fasten the pair of couplers.</p> |
