Xadhkaha korontada waxaa loo kala saari karaa siyaabo kala duwan. Iyada oo ku saleysan kala duwanaanshaha kirishbooyada, dahaadhka, iyo alaabta gal, waxa loo qaybin karaa naxaas -xababka xudunta u ah, aluminium{2}}xababka xudunta u ah, cross{3}polyethylene linked (XLPE){4}}xadhkaha dahaaran, iyo polyvinyl chloride (PVC){5}}xadhkaha dahaaran, iyo noocyo kale. Mid kasta oo ka mid ah noocyada fiilooyinkani waxay bixiyaan faa'iidooyin codsiyo kala duwan sababtoo ah sifooyinka jireed iyo kiimikaad ee gaarka ah. Tusaale ahaan, naxaasta -xadhkaha xudunta u ah, oo leh dhaqdhaqaaqooda ugu wanagsan iyo xoogga xajinta sare, ayaa si balaadhan loogu isticmaalaa gudbinta korantada sare{9}}. Cross{11}}Polyethylene linked (XLPE){12}}Fiilooyin dahaaran, oo leh kulaylkooda sare iyo iska caabbinta kiimikaad, ayaa ah doorashada ugu habboon ee gudbinta korantada ee jawiyada adag.
