Casting is a manufacturing process in which a liquid material is usually poured into a mold, which contains a hollow cavity of the desired shape, and then allowed to solidify.
TIANYI SUNS offers multiple investment casting, sand casting, permanent casting, die casting, low pressure casting, ESR casting,lost foam casting, etc. Material can be handled include steel, iron, non-ferrous. Single component weight range is from 0.01Kg to 150 tons separately.
We can design and offer various kinds of ductile iron manhole cover according to customer's requirement. We promise:
--product development according to customer requirements
-- safe and environment-friendly production process
-- accurate and timely supply
-- excellent and perfect service











