●Mipira ya mutu wa semicircular imagwiritsidwa ntchito makamaka poyikira mipiringidzo yokhala ndi katundu waukulu wopingasa, ndipo imagwiritsidwa ntchito kwambiri.
●Ma riveti a flat taper head amagwiritsidwa ntchito kwambiri m'maboti, m'thanki yamadzi a boiler ndi nthawi zina zowononga chifukwa cha mutu wawo waukulu komanso kukana dzimbiri.
●Ma riveti a mutu wa countersunk ndi ma riveti a mutu wa countersunk okwana 1200 amagwiritsidwa ntchito makamaka pa nthawi yopangira riveti pomwe pamwamba pake payenera kukhala posalala komanso katundu wochepa.
●Mitu ya semi countersunk ndi mitu 1200 ya semi countersunk imagwiritsidwa ntchito makamaka pa nthawi yopangira riveti pomwe pamwamba pake payenera kukhala posalala ndipo katundu wake si waukulu.
●Ma riveti okhala ndi mutu wathyathyathya amagwiritsidwa ntchito pokoka riveti ndi katundu wamba.

Nthawi yotumizira: Juni-30-2021