We are a trading company focus on producing and exporting casting parts.Including Ductile Iron and Gray Iron casting manhole cover 、pipe fitting valve、handwheel、handwheel、flat and crooked Grating .The shape of manhole cover contains round cover with square frame，square cover with square frame ,round cover with round frame. The size of the products are from 300MM to 800MM and they could bear 12.5-25 tons respectively. We could also produce according to your requirement or the sample,we have top-quality products and very low price.