Material: Ductile Iron

Length: 5.7 meters, 6 meters

Implementation standard:ISO2531/EN545/EN598

Shape: Round

Hardness: < 230HB

Wall thickness:K7/K8/K9/C40/C30/C25

Tension: 420 Mpa

Yield (≥ Mpa) : 300 Mpa

Casting process: Centrifugal casting

Processing services: Welding, Cutting

 

External coating: Metal zinc paint + asphalt paint, PU, Epoxy resin paint

Internal coating: Portland, Sulphate Resistant, High-Aluminum cement mortar lining, PU, Epoxy resin paint

Joint type: T-type (Push-on), K-type, Self-Restrained

Color: according to customer's needs

Test :100% Water Pressure Test

Application: pipeline, Water supply project, drainage, sewage, irrigat

 

Implement related product standards

ISO 2531 Ductile iron pipes, fittings and accessories for pressure pipelines.
BSEN545 Ductile iron pipes, fittings and accessories and their joints for water pipelines. Requirements and test methods.
BSEN598 Ductile iron pipes, fittings, accessories and their joints for sewage application-requirements and test methods.
ISO7186 Ductile iron pipes, fittings, accessories and their joints for the construction of drains and sewers outside buildings.
ISO4179 Ductile iron pipes for pressure and non pressure pipelines-Centrifugal cement mortar lining-general requirements.
ISO8179 Ductile iron pipes-External zinc coating.
ISO4633 Rubber Seals – joint rings for water supply, drainage and sewerage pipelines-specs for materials.
ISO 8180 Ductile iron pipes – Polyethylene Sleeve.

 

Chemical composition: (%)
C: 3.5-4.0

Si: 1.9-2.6

Mn: 0.15-0.45

P: <0.06

S: <0.02

 

Mechanical properties
Tensile strength: ≥420MPa
Yield strength: ≥300Mpa
Hardness: ≤230HB
Elongation % : DN80-1000 ≥10 DN1200-2200 ≥7

 

Process and testing
Induction furnace and treated metals (Chemical analysis of raw materials, spheroidizaing and Nodularity)
Casting (visual check and weight check)
Heat treatment (Microstructure)
Hydraulic test (Pressure test)
Dimensional checks (Checking pipe length and joint, OD, wall thickness, appearance)
Zinc spraying (Thickness testing)
Lining and coating (100% visual check, thickness testing randomly)
Marking and packaging (100% visual check)