ISO2531 Socket Spigot Ductile Iron Pipe K8

Ref Price:
Loading Port:
China Main Port
Payment Terms:
TT or LC
Min Order Qty:
100 Meter m
Supply Capability:
250000 Ton Per Year m/month

OKorder Service Pledge

Quality Product

Order On-line Tracking

Timely Delivery

OKorder Service Pledge

Credit Rating

Credit Services

Credit Purchasing

Share to:

Product Description:


General Introduction and Specifications of ISO2531 Socket Spigot Ductile Iron Pipe K8

Standard: Pipes according to ISO2531/EN545

Joint: T Type joint

Size: DN80-DN2000

Effective length: 6m/pc or 5.7m/pc or 5.5m/pc

Internal lining: cement mortar lining comply with ISO4179

External coating: sprayed metallic Zinc coating (min.130g/m2) according to ISO8179 + bitumen painting (min.70μm) according to BS3416.

Gasket: Matched 100% natural rubber gasket in accordance with ISO4633.


Applications of ISO2531 Socket Spigot Ductile Iron Pipe K8

Design Flexibility: Pipes will safely function over a wide range of operating pressure, trench loads and installation conditions. Standard design includes generous factor of safety to protect against unknowns.

Easier Handing: Ductile Iron Pipes can be more easily maneuvered under and around existing underground obstructions, thereby eliminating unnecessary changes in line or grade.

Superior Joints: Easily assembled push in joints speed job progress, minimize installation cost. Joint remains leakproof under all operating pressures.

A complete Range: Ductile Iron Pipes are available with complete range of fittings and accessories in size from 80 to 2000mm dia. And a variety of lining and coatings for varied service conditions.


Standard Wall Thickness of ISO2531 Socket Spigot Ductile Iron Pipe K8

Nominal Wall Thickness of pipe:


Where, DN: Nominal diameter; K: Coefficient(K=7,8,9,10,11,12...)

Nominal Wall Thickness of pipe fittings:

e=7+0.014*DN (K=14)

e=6+0.012*DN (K=12)

Packing, Delivery and transport of ISO2531 Socket Spigot Ductile Iron Pipe K8



Show for ISO2531 Socket Spigot Ductile Iron Pipes K8


Send a message to us:

Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

Q:What quota can be used for the installation of DN300 ductile iron pipes?
Ductile iron quota, to see what works, such as the use of ductile cast iron bridge, to see the river length, through traffic, perennial water level to determine the ductile iron pipe length, diameter and number;
Q:Deep well spiral iron pipe, or ductile iron tube?
Ductile iron pipe is a kind of cast iron pipe. In quality, the spheroidization of cast iron pipes is controlled to be 1-3 (spheroidization rate 80%), so the mechanical properties of the cast iron pipes, ductile iron pipes and finished product libraries can be better improved, with the nature of iron and the properties of steel. Ductile cast iron pipe after annealing, the microstructure is ferrite and pearlite, good mechanical properties, excellent corrosion resistance, good ductility, good sealing effect, simple installation, mainly for municipal, industrial and mining enterprises, water supply, gas, oil etc..
Q:Can cast iron pipes not be used for domestic water supply and drainage?
Cast iron pipes are mostly used in fire fighting, fire hydrant water supply and indoor water supply. Plastic pipes are used in general and high water riser pipes are made of plastic steel composite pipes
Q:What does ductile iron pipe "K" mean?
K means wall thickness registration, general water supply and drainage, now China uses K9, and some countries in South America, such as Brazil, use K7.The wall is thick =k (DN/1000+0.5), such as K9's DN500 tube, with a wall thickness of =9* (500/1000+0.5) =9mm
Q:How can the ductile iron pipe depress the elbow so as to prevent it from being opened?
Elbow materials are cast iron, stainless steel, alloy steel, malleable cast iron, carbon steel, nonferrous metals and plastics.
Q:There are several forms of flexible interfaces for Spigot Cast Iron Pipes
China's production of "GB 13295-1991 centrifugal casting ductile iron pipe)," GB13294-1991 "provisions of nodular cast iron pipe annealing, centrifugal casting, water for ductile iron pipe pipe, pipe fittings, rubber technical performance, the interface type adopts slip type T shaped interface.
Q:Does the cast iron pipe for spheroidal graphite need corrosion protection when laying underground?
In quality, the spheroidization of cast iron pipes is controlled to be 1-3 (spheroidization rate 80%), so the mechanical properties of the cast iron pipes, ductile iron pipes and finished product libraries can be better improved, with the nature of iron and the properties of steel
Q:Advantages and disadvantages of ductile iron pipes
Generally not used in high pressure pipe network (6MPa or more). Because the pipe is relatively bulky, the machine must be used when installing. When the water leak occurs after the test, all the pipes must be dug out, and the pipe can be hoisted to the height of the clamps. The clamps can be installed to prevent leakage.
Q:Ductile iron pipes lined with cement mortar in the water (living water, water in the 6.9-7.3) in the early pH, why pH increased? How to solve this problem?
The basic characteristic of ductile iron pipe of ordinary cement mortar lining the inner wall of the tube will make passivation, have antiseptic effect, but in the initial stage of using cement mortar lining will be the alkali component separation, so that the pH value of water increased to influence water quality
Q:Is the cast iron pipe buried in need of antiseptic treatment? What kind of anticorrosive materials are used?
It must be antiseptic. Usually hot asphalt brush painted two times, winding glass fiber cloth two road, cross construction.
MAXPIPE ,produces both pig iron and ductile iron pipes. At present, we have two 350m3 blast furnaces, and the annual throughput of pig iron is 1.5million tons. We imported the advanced Water-cooled Centrifugal Casting Processing Equipment in 1989 and began to produce ductile iron pipes in 1990. We are the first one that produces centrifugal casting ductile iron pipes according to ISO2531 and EN545 in China. There are 8 centrifugal casting machines and four finish lines for DN80-1200mm, which can produce 200 thousand tons per year covering 17 sizes.

1. Manufacturer Overview

Location Shandong, China
Year Established 1989
Annual Output Value Above US$ 3 Million
Main Markets Mid East Europe; Eastern Asia; South Africa;
Company Certifications ISO 9001:2008;ISO2531:2000

2. Manufacturer Certificates

a) Certification Name  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port Tianjin; Qingdao
Export Percentage 41% - 50%
No.of Employees in Trade Department 2000 People
Language Spoken: English; Chinese; Spain; Alabic
b)Factory Information  
Factory Size: Above 100,000 square meters
No. of Production Lines Above 8
Contract Manufacturing OEM Service Offered; Design Service Offered
Product Price Range Average