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Specifications

ISO ductile iron pipe
size:DN80-DN1200
thickness: K7-K12
effective length: 6M
material cast iron

ISO ductile iron pipe

Ductile cast iron is a kind of alloy of iron, carbon and silion, in which graphite exists in the type of spherical, generally the size of graphite is 6-7 class, and spheriodization grade of the pipe should be controlled 1-3 class (spheroidization rate is not below 80%). Thus after spheroidization, ductile cast iron possesses the nature of iron as well as the characteristics of steel. After annealing, its microstructure contains ferrite and a little pearlite possessing excellent mechanical properties.

Some other properties

Our company strictly conforms to the international standard and European standard, during hydraulic pressure test the pressure is 1 MPa higher than that of prescribed in the international standards.

As well ductile cast iron pipe is of excellent impact strength so that could moderate the requirements of construction of pipeline bed and protection layer, thus laying pipeline could be economical and reliable. In addition, external zinc spraying and bitumen coating, internal cement lining etc. could ensure the internal and external anticorrosion of pipeline. The quality of zinc spraying conforms to ISO 8179, the minimum zinc spraying per square meter is 130g, and the thickness of bitumen paint is not below 70. At the same time cement lining in compliance with ISO 4179 could ensure mortar firm, dense, smooth and adhesive.