The production process of DN1600× 90° T-type double socket ductile iron elbow pipe was introduced.

To reduce the energy consumption of annealing furnace of ductile cast iron pipe, the measures of increasing entrance temperature of pipe, improving heat efficiency and changing the type of fuel are taken, the cost of pipe is decreased by 71 2 yuan/t and the effect of energy saving is very notabl

The gas cavity and pinhole defects formed in the ductile iron pipes was analyzed to improve the qualified rate of the ductile cast iron pipes by water-cooling centrifugal casting,and to reduce the rejection rate.

Study on the Properties of Ductile Iron Pipe Centrifugally Casted by Means of Resin Sand Coated Metal Mould;

A special polyurethane coating used for ductile iron pipe has been developed.

Progress in the painting technology of solvent free polyurethane coating for ductile iron pipes;

On application of mechanical interface ductile iron pipes in metro

The performance of coatings shows that this technology and apparatus are fit for th e anti-corrosion protective finishing on the ductile iron pipes.

The merits and demerits of nodular cast iron pipes used in subway tunnel sections were analyzed, and the reasonable measures for overcoming the demerits were put forward to supply water in the sections safely and reliably.

This paper discusses on whether to adopt nodular cast iron pipes or steeliness converse rainbow pipes through a river trench in the first scheduled time water supply engineering of new waterhead terra City of Lang Fang, And explains with technical characters,engineering investment and safety for water supply.

The application of casting ductile iron pipe in municipal pipeline and prospect forecast;

The application of casting ductile iron pipe in the No.5 line works of Beijing metro;

The application of casting ductile iron pipe in water supply and drainage;