Butt-welded pipe caps are pipe fittings welded to the ends of steel pipes to seal the pipeline. They are also called pipe caps, end caps, plugs, or pipe covers. The main materials include carbon steel, stainless steel, and alloy steel, with specifications ranging from DN15 to DN1200 and wall thicknesses from SCH10 to SCH160. They conform to various international and domestic standards such as ASME, DIN, JIS, and GB/T.
Butt-welded pipe caps come in various shapes, including convex, conical, and flat caps. Convex caps are further divided into hemispherical, elliptical, dished, and spherical crown shapes. They are fixed by welding to ensure pipeline sealing and are widely used in petrochemical, nuclear power, machinery, medical equipment, shipbuilding, and pipeline industries.