EN Ductile Iron Cement Lined Pipe Self Restrained Joint Type K789 Class

Basic Information
Place of Origin: CHINA
Certification: ISO2531,EN545/598,WRAS,SGS
Model Number: DN80-2600
Minimum Order Quantity: 10TONS
Packaging Details: bundled with steel belts or in bulk
Delivery Time: 30DAYS
Payment Terms: L/C, T/T
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Detail Information
Product Name: Plumbing Parts Ductile Iron Joints Rotary Swivel High Pressure Pressure: PN1.0/PN1.6/PN2.5/PN4.0
Standard: EN Size: 80-2600
Color: Customer's Requirement Of Dismantling Joint Application: Pipes Quickly Joint
High Light:

restrained joint pipe


cement lined pipe

Product Description

EN Ductile Iron Cement Lined Pipe Self Restrained Joint Type K789 Class


Self-Restrained joint ductile iron pipe:

Restrained joint in which means provided to prevent separation of the assembled joint. All restrained joints shall be 
designed to be at least semi-flexible. Produce according to the customer’s requirement.



1) Effective length: in general, the pipe length is 6m for bulk shipment and 5.7m for container shipment.

2) Internal lining: cement mortar lining as per ISO4179

3 Zinc coating: at least 130g/m2 as per ISO 8179

4) Bitumen painting: at least 70um as per ISO 8179

5) Gaskets are NBR rubber, natural rubber, SBR rubber or EPDM rubber ring as per ISO4633


Chemical composition: (%)

a) C: 3.5 - 4.0

b) Si: 1.9 - 2.6

c) Mn:0.15 - 0.45

c) P: <0.06

d) S: <0.02

Mechanical properties

a) Tensile strength: ≥420MPa

b) Yield strength: ≥300Mpa

c) Hardness: ≤230HB

d) Elongation%: DN80 - 1000 ≥10 DN1200 - 2200 ≥7


Table 3 — Allowable pressures for socketed fittings  
Nominal size Allowable operating Maximum allowable Allowable site test
  pressure operating pressure pressure
  bar bar bar
40 to 200 64 77 82
250 to 350 50 60 65
400 to 600 40 48 53
700 to 1400 30 36 41
1500 to 2600 25 30 35


Packing: bundled with steel belts or in bulk

Shipment: in bulk or container



Much of the production of ductile iron is in the form of ductile cast iron pipe, used for water and sewer lines. Ductile cast iron pipe is stronger and easier to tap, requires less support and provides greater flow area compared with pipes made from other materials like PVC, concrete, polyethylene or steel. Ductile Iron Pipe is the most widely-used pipeline product in water supply and water drain/sewage projects.


Our advantages:

There are lots of qualified managers and technicians, and a well-trained team of after-sales service, which provides all services of manufacture, package, transportation and installation. We are looking forward to cooperating with friends from abroad and home creating a brighter future.


Contact Details

Phone Number : 86-371-53378091