Banan District Jianguo Building Materials is a specialized Chongqing manhole cover, which mainly produces nodular cast iron manhole covers, composite manhole covers, stainless steel manhole covers, nodular cast iron water grates, composite water grates, cable supports, guide bricks, etc. Our products have complete specifications, high strength and low price. If you want to know more nodular cast iron manhole covers, please call! Banan Jianguo Building Materials mainly produces various specifications and models of composite resin well covers, ductile iron well covers, stainless steel well covers, etc. It has certain requirements for compressive strength, impact resistance and corrosion resistance. It can be widely used in urban road facilities