3.Elliptic tube: tube elliptic waa badeeco cusub oo la soo bandhigay sanadihii ugu dambeeyay.Marka la barbardhigo tuubada wareegta ah, tuubada elliptical waxay leedahay iska caabin cadaadis gaar ah oo wanaagsan.Si kastaba ha ahaatee, sababtoo ah tuubada elliptic ee hadda jirta waxay ka samaysan tahay cajalad galvanized ah, waxqabadkeeda ka-hortagga daxalka ayaa ka hooseeya kan tuubada wareega.
4.Profile Steel: waxaa loo isticmaalaa dusha sare ee aqalka dhirta lagu koriyo si loo sameeyo jir bir ah.Waxay leedahay faa'iido qiimo jaban iyo xasillooni liidata marka la barbar dhigo tuubada labajibbaaran. Waxaa inta badan loo isticmaalaa meelaha walaaca hooseeya iyo shuruudaha ilaalinta daxalka.