Angle zitsulo ndi carbon structural chitsulo chomangira.Ndi gawo losavuta lazitsulo zachigawo.Amagwiritsidwa ntchito makamaka pazigawo zachitsulo ndi chimango cha msonkhano.Imafunika kukhala ndi weldability wabwino, kupunduka pulasitiki ndi mphamvu makina ntchito.