Forged Threaded Cap
The Forged Threaded Cap is used to close and pressure-seal the open end of a threaded pipe. The female NPT thread at the open end screws onto the male-threaded pipe end, blanking off the pipe bore and providing a pressure-tight closure that can be removed and replaced without damaging either the pipe or the cap. The opposite end is a solid forged dome that provides the full pressure containment.
Threaded caps are used for pipe end protection during construction, for pressure testing (removed and reinstalled repeatedly), and for permanent blanking of unused threaded outlets on tees, crosses and manifolds. Unlike a plug (which is screwed into a female fitting), the threaded cap screws over a male-threaded pipe end, providing full end closure with a smooth external profile. Cunimet Alloy International manufactures threaded caps through closed-die forging, producing a strong, dense body at the junction between the thread and the closed dome.