Other Properties of ductile cast iron pipes

 

Nominal Diameter (mm)	Hydraulic Tese Pressure
80≤DN≤300	5
350≤DN≤600	4
700≤DN≤1000	3.2
1100≤DN≤2000	2.5

He Production process of the ductile cast iron pipes strictly conforms to the international standard and European standard, during hydraulic pressure test the iron pipe is of excellent umpact strength so that could moderate the requirements of construction of pipeline bed and protection layer, thus laying pipeline could be economeical and reliable. In addition, external zinc anti-corrosion of pipeline.The quality of zinc spraying per square meter is 130g, and the thickness of bitumen paint is not below 70 μm. At the same time cement lining in compliance with ISO479 could ensure mortar firm, dense, smooth and adhesive. Its thickness is as followed list.

Hydraulic Pressure Testing	Zinc Spraying

 

Nominal diameter (mm)	Minimum Wall Thickness
80≤DN≤300	3
350≤DN≤600	5
700≤DN≤1200	6

 

Bitumen Coating

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