Ductile Iron Pipes DN80–2600 | ISO & TUV Certified Manufacturer

Our ductile iron pipes (DN80–2600 mm) are designed for water supply, sewage, and heating systems. With advanced centrifugal casting, anti-corrosion linings, and a service life of 100+ years, they ensure strength, safety, and durability.
Certified by ISO, SGS, TUV, and French 8V, we provide complete pipeline solutions with fittings, castings, and gaskets.

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Introduction Photos

Introduction

Product Overview

Ductile iron pipes are one of the most reliable solutions for modern water supply, drainage, and infrastructure projects. With superior mechanical strength, excellent corrosion resistance, and a service life of over 100 years, our ductile iron pipes are trusted worldwide for municipal, industrial, and utility applications.

Our production system is capable of manufacturing DN80–2600 mm ductile iron pipes in 26 specifications, with an annual capacity of 800,000 tons.

Production process of ductile iron pipes from pig iron to finished product

Product Categories

By Application

Water Supply Pipes – Ensure safe and efficient potable water distribution.
Sewage Pipes – Resistant to chemical and abrasive environments, suitable for drainage systems.
Heating Pipes – Withstand high pressure and temperature, ideal for district heating networks.

By Type & Technology

Polyurethane-lined Pipes (PU) – Excellent corrosion resistance and smooth flow.
Epoxy Resin Lined Pipes – Reliable chemical resistance, suitable for wastewater.
Epoxy Ceramic Lined Pipes – High wear resistance for harsh environments.
Organic-Inorganic Polymer Ceramic Coated Pipes – Advanced hybrid coating for durability.
Zinc-Aluminum Alloy Coated Pipes – Outstanding external anti-corrosion protection.
PE Lined Pipes – Food-grade lining ensures safe water transport.
Anti-Pull-off Pipes – Secure joints prevent separation under pressure.
Jacking Pipes – Specially designed for trenchless underground construction.
Towing Pipes – Robust design for pipe towing installation methods.

Product Features

Mechanical Properties

Performance Indicator	Ductile Iron Pipe	Steel Pipe (Q235B)
Tensile Strength (MPa)	≥420	≥375
Bending Strength (MPa)	≥590	≥400
Elongation (%)	DN80 - 1000 ≥10; DN1100 - 1600 ≥7	≥18
Elastic Modulus (N/mm²)	Approximately 17×10⁴	20×10⁴
Thermal Conductivity	42	50 - 60

Corrosion Resistance Performance

The electrochemical corrosion resistance of ductile iron material is better than that of carbon steel.
The resistivity of ductile iron is more than 4 times that of carbon steel.

Material	Resistivity (μΩ/cm³)
Carbon steel	10—20
Ductile iron	50—70

a. The resistivity of ductile iron material is high, about 4 times that of carbon steel.

b. Due to the isolation effect of the rubber sealing ring at the ductile iron pipe joint, long - line current will not form in the ductile iron pipeline, and generally, there is no need to take cathodic protection measures.

Application of ductile iron pipes in urban water supply projects