| 摘要 |
<p>Pipe joint components such as the metallic sleeve and companion nut of a compression-type pipe coupling are entirely coated with a corrosion resistant polymeric plastic. On each of the sleeve and nut, the coating terminates in a thread formation of coating composition tandemly juxtaposed and comprising an extension of the metal thread thereon. When assembled in joint formation, the coatings on the individual components are interlocked by the engaged plastic threads as to enhance corrosion protection about the metal-to-metal threads of the fittings.</p> |
