Chivharo chepombi chivharo chepombi chinokodzera chinosungirirwa pamagumo epombi kana kuiswa kunze kweshinda yepombi yekupedzisira kuvhara pombi.Inoshandiswa kuvhara pombi uye ine basa rimwechete sepombi yepombi.Iyo convex pombi kapu inosanganisira: hemispherical pombi cap, oval pombi kepu, madhishi kepu uye spherical caps.Zvivharo zvedu zvinosanganisira carbon steel caps, Stainless steel caps, alloy caps, nezvimwewo, izvo zvinogona kusangana nezvido zvako zvakasiyana.