Heat Treatment Ductile Iron Pipe Cement Lined K789 Or C253040 Class 450mm

Heat Treatment Ductile Iron Pipe Cement Lined K789 Or C253040 Class 450mm

Cement Lined Ductile Iron Pipe overview:

Ductile cast iron is kind of alloy of iron, carbon and silicon, in which graphite exists in the type of spherical, generally the size of graphite is 6-7 class, and spheriodization grade of the pipe should be controlled 1-3 class(spheroidization rate is not below 80%). Thus after spheroidization, ductile cast iron possesses the nature of iron as well as the characteristic of steel. After annealing, its microstructure contains ferrite and a little pearlite possessing excellent mechanical properties.

Much of the production of ductile iron is in the form of ductile cast iron pipe, used for water and sewer lines, 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.

Specifications:

1) EN598,ISO 2531, EN545 , .

2) Class: K7,8,9,C25,30,40.

3) Joint:T, K type

4) Internal: cement mortar lining as per ISO4179

5) external:Zinc coating min130g/m2 as per ISO 8179

6) DN 80 - 2,600 mm

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

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

9) DN 80 - 2,600 mm

10) High strength, lighter than gray iron, good corrosion resistance, no furring, small flow resistance, easy fixing, long life time

11) Checked by automatic inspection equipment.

Process and testing:

a) Induction furnace and treated metal (Chemical analysis of raw material, spheroidizing & Nodularity)

b) Casting (Visual check and weight check)

c) Heat treatment (Micro structure)

d) Hydrostatic test (Pressure test)

e) Dimensional checks (Checking pipe length and joint, OD, wall thickness, appearance)

f) Zinc spraying (Thickness testing)

g) Lining and coating (100% visual check, thickness testing randomly)

i) Marking and packing (100% visual check)

Internal lining

External Coating

Packing: bundled with steel belts or in bulk

Shipment: in bulk or container

Usage:

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.