The ductile iron pipes are manufactured according to ISO2531/EN545/EN598/NBR7675 international standard. Ductile cast iron is a kind of alloy of iron,carbon and silicon.During production process,we carry out tests on line strictly and test items includes:hydraulic pressure,cement lining thickness,zinc spraying thickness,bitumen coating thickness,dimension test,impressing test and so on.Especially,we have the most advanced X-ray detector to test wall thickness of each pipe precisely so that we could ensure pipes quality conform to standard.

Coating: epoxy resin paints & powder coating,bitumen coating.