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Product Overview
Carbon Steel Cast Iron Pipes
A carbon steel cast iron pipe to ISO 2531, EN 545, ANSI/AWWA C150, ductile iron with various joints, for water supply, sewerage, and fire protection.
Product Introduction
Main Executive Standards
- ISO 2531: Ductile iron pipes, fittings, accessories and their joints for water applications
- EN 545: Ductile iron pipes, fittings, accessories and joints for water pipelines
- EN 598: Ductile iron pipes, fittings, accessories and joints for sewerage applications
- ANSI/AWWA C150/A21.50: American Standard for Ductile Iron Pipe
- GB/T 13295: Ductile iron pipes, fittings and accessories for water and gas
- ISO 7186: Ductile iron products for soil and waste discharge
- BS EN 545, BS EN 598: UK European standards for ductile iron pipelines
. Material & Grades
Ductile Iron
- Material: Spheroidal Graphite Cast Iron (Ductile Iron, DI)
- Common Grades / Classes: K7, K8, K9, K10, K12; C20, C25, C30, C40, C50, C64, C100 (pressure classes)
-
Typical Mechanical Properties (K9 Ductile Iron):
- Minimum Tensile Strength: 420 MPa
- Minimum Yield Strength: 300 MPa
- Elongation: ≥10%
- Hardness: ≤230 HB
- Traditional Grey Cast Iron: lower ductility, older type, now mostly replaced by ductile iron
- Coatings: Internal cement mortar lining, external zinc coating + bitumen/epoxy coating, polyurethane coating
Basic Parameter Table (Ductile Iron Pipe K9 Reference)
| DN (Nominal Diameter) | Outer Diameter (mm) | K9 Nominal Wall Thickness (mm) | Standard Length |
|---|---|---|---|
| DN100 | 118 | 6.1 | 6 m |
| DN150 | 170 | 7.2 | 6 m |
| DN200 | 222 | 8.3 | 6 m |
| DN250 | 274 | 9.4 | 6 m |
| DN300 | 326 | 10.2 | 6 m |
| DN400 | 429 | 11.8 | 6 m |
| DN500 | 532 | 13.5 | 6 m |
| DN600 | 635 | 15.2 | 6 m |
- Pressure Ratings: PN10, PN16, PN25, PN32, PN40 etc.
- Test: Hydrostatic pressure test, tightness test, coating inspection, dimensional inspection
- Joint types: T-type push-in joint, flange joint, self-anchoring joint