TongYu is the largest production base of ductile iron pipe mould in Asia. Our pipe moulds are available mainly in diameter from DN50 to DN2600mm.

Most of the standards covering pipe and fittings manufactured by AMERICAN Cast Iron Pipe Company have been prepared by the American Water Works Association Standards Committee A21. Other applicable standards generally cover specialties or refer to ANSI standards.

In the field of engineering, there are many types of pipes. Let us first look at the field of civil and mechanical engineering. In the construction sector, there are several types of pipes. Each has a different function in a building.

Concrete pipe cannot compare to Ductile Iron when considering their respective approaches to internal pressure design; and Ductile Iron Pipe is much easier to install and operate than concrete pipe.

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