Pipe cap have other names, such as sealing head, plug, LIDS, pipe cap, bulkhead. Pipe cap’s application is to cover pipe in the form of weld or installation with thread.
USES: welding on the Pipe end or installed outside the Pipe thread to cover wall Pipe fittings. Use closed pipeline, function the same as the tube wall. Closure phase in the form of close, only the blind flange can be sealed, sealing, and welded tube cap is not detachable. Pipe cap, including convex cap, conical shell, variable diameter section, the design of the flat cover and tighten.
Dis cap , avoid joining together, will be thinned and high stress.
Splice weld direction when asked to only allow is radial and ring. After large pipe cap may cancel this request. Stitching distance requirements, for more than 3 g, and not less than 100 mm (welding heat affected zone is high stress zone, and in the chemical composition of the area will be a loss. So to avoid the high stress area, the area and thickness. According to the practical experience, the stress attenuation length is greater than 3 g, and not less than 100 mm). But refrigeration equipment is difficult to meet the requirements, has its particularity.
Source: Yaang Pipe Industry Co., Limited (www.yaang.com)