Various Sizes of Ductile Iron Pipes Are Available for Your Different Project Demands

Model Number

ductile iron pipe

Length

5.7m,6m

Standard

ISO2531/EN545/EN598

Application

pipeline

Shape

Round

Hardness

230HB

Pipe Wall Thickness

K7/K8/K9/C40/C30/C25

Pull Strength

>420MPa

Yield (≥ MPa)

300 MPa

Material

Ductile Iron

Type

Casting

Processing Service

Welding, Bending, Punching, Decoiling, Cutting

Certification

ISO2531:1998

Test

100% Water Pressure Test

Transport

Bulk Vessel

Delivery

In Container

Inner lining

Ordinary Cement

PRODUCTION FLOW OF DUCTILE IRON PIPES

Melten Iron ---- Molten iron purification ----- Heating and Spheroidization ---- Spheroidization ---- Centrifugal Casting ---- Annealing ---- Zinc spraying ---- Finishing and polishing ---- Hydrostatic Test ---- Cement Lining ---- Curing of Cement ---- Bitumen Painting ---- Packing

Ductile Iron Pipe is widely used in various environments due to its high strength, corrosion resistance and flexibility:

1. Municipal water supply and drainage system

1.1 Tap water transportation
Advantages: Lined with cement mortar/epoxy resin to ensure water quality (in compliance with GB/T 17219 standard).
Scenario: Urban main water supply network, water plant outlet pipe.

1.2 Sewage discharge
Advantages: Externally coated with asphalt/epoxy coal tar, resistant to acid and alkali corrosion (pH 4-10).
Scenario: Inlet and outlet pipes of sewage treatment plants, rainwater and sewage combined pipes.

2. Industrial field

2.1 Mine drainage
Pressure resistance level: PN10-PN25, suitable for deep well high pressure environment.
Case: South African gold mine drainage system (DN800, pressure bearing 2.5MPa).

2.2 Chemical medium transportation
Special treatment: polyurethane lining/ceramic coating, resistant to H₂S and chloride corrosion.
Limitation: Strong acid (pH<2) or high temperature (>80ºC) requires stainless steel.

3. Agricultural irrigation
Water-saving irrigation pipe network
Advantages: lifespan of more than 50 years, maintenance-free (compared to PVC which is prone to aging).

Jingdong Pipe Industry Co., Ltd is a large group company integrating mining, beneficiation, sintering, ironmaking, and casting. It has three smelting blast furnaces, ten centrifugal units, three annealing furnaces and five automated finishing lines. It mainly produces ductile iron pipes, flexible cast iron drainage pipes, ductile iron fittings, ductile iron manhole covers. The overall annual production capacity exceeds 500,000 tons. The company's products have passed: Environmental Management System GB/T24001-2016/ISO14001:2015; Occupational Health Management System ISO45001:2018; Quality Management System GB/T19001-2016/ISO9001:2015. And become the recommended product of China Water Supply and Drainage Association. Product implementation standard: GB/T13295-2109. The company's products have won the approval of the majority of users for their excellent mechanical properties. Its impact resistance, high pressure resistance, corrosion resistance, high elongation and easy installation are the main features of the product. The products occupy the domestic mainstream market and are sold to more than one hundred regions at the same time, and are well received by users.