The carbon steel pipe cap includes the design of convex pipe cap, conical shell, variable diameter section, flat cover, and tight mouth reducing head.
Convex pipe caps include hemispherical pipe caps, elliptical pipe caps, disc-shaped pipe caps, and spherical cap shaped pipe caps. From the perspective of force, the hemispherical cap in the convex cap is gradually becoming less desirable, but from the perspective of manufacturing difficulty, it is gradually becoming easier to manufacture.