6, high strength: strength and toughness is much higher than cast iron, can be used in docks, airports and other large span and heavy-duty environment.
xoog 4.High, Xoog iyo qalleyf waa ka sii badan bir ah ee kabka, waxaa loo isticmaali karaa dekedda, garoonka diyaaradaha iyo xaaladaha kale ee taako waaweyn iyo load culus.