Products Description
The T-shaped ductile iron pipe is a specialized fitting designed for branch connections in ductile iron pipeline systems. Manufactured in accordance with ISO 2531 and EN 545 standards, this T-shaped configuration enables reliable 90-degree branch take-offs from main transmission lines while maintaining full pressure integrity. Available in sizes ranging from DN80 to DN1600, these fittings are centrifugally cast to ensure uniform wall thickness and consistent mechanical properties across the entire structure. The T-shaped design incorporates either T-type push-on joints or flanged ends, providing flexibility for various installation scenarios.
Key Technical Specifications
| Item | Specification | ||
| Product Type | Centrifugally Cast Ductile Iron Pipe | ||
| Standard | ISO 2531 / EN 545 / EN 598 | ||
| Nominal Size | DN80 – DN2600 | ||
| Pressure Class | C20 / C25 / C30 / C40 / K9 / K12 (as per ISO 2531) | ||
| Joint Type | T-Type push-on joint / Self-anchoring joint / Flanged ends | ||
|
6,000 mm (standard) / Custom lengths available | ||
| Lining | Cement mortar lining (factory applied) | ||
| Coating | Zinc + epoxy topcoat / Fusion-bonded epoxy / Polyurethane |
Product Features
High strength with ductility: Combines the tensile strength of steel with the corrosion resistance of cast iron, offering impact resistance and fatigue endurance.
Centrifugal casting process: Ensures uniform wall thickness, dense microstructure, and consistent mechanical properties across the entire pipe length.
T-Type push-on joint: Factory-assembled gasket enables rapid, watertight connections without bolts or welding, reducing installation time.
Multiple pressure class options: Available in K9, K12, C20 through C40 classes to match hydraulic design requirements for various working pressures.
Standardized cement mortar lining: Provides a high-alumina cement lining that maintains water quality and prevents internal corrosion.
Flexible joint design: Accommodates angular deflection up to 3° to 5° depending on diameter, allowing adaptation to ground movement.
Extended service life: Engineered for 50 to 100 years of service with proper installation and corrosion protection.
Application
Long-distance potable water transmission mains
Urban water distribution networks
Gravity and pressure sewage collection systems
Industrial water supply and cooling water circuits
Irrigation projects and agricultural water systems
Fire protection water mains
Trenchless installations (pipe jacking, horizontal directional drilling)
Materials
Pipe body: Ductile iron grade EN-GJS-400-15 / EN-GJS-450-10 (ISO 1083 / ASTM A536)
Gasket: EPDM (drinking water approved) per EN 681-1 / ISO 4633
Internal lining: Cement mortar lining to ISO 4179 (type M or type T) / Epoxy lining to EN 14901
External coating: Metallic zinc (200 g/m² minimum) with epoxy topcoat to ISO 8179 / Polyurethane coating to EN 15189
Zinc coating: 130 g/m² to 200 g/m² per ISO 8179 (Class A or Class B)
Accessories
Push-on joint gaskets: EPDM, NBR, or Viton options for specialized media
Self-anchoring joints: Integrated restraint systems eliminating concrete thrust blocks
Flanged adapters: Transition pieces for connection to valves, pumps, or dissimilar materials
Custom pipe lengths: Non-standard lengths for specific project requirements
Special internal linings: High-build epoxy, polyurethane, or fusion-bonded epoxy for aggressive fluids
Enhanced external coatings: Polyurethane (PU) for high abrasion environments or marine applications
PE sleeving: External polyethylene encasement for additional corrosion protection in aggressive soils
Lifting accessories: Slings, hooks, and spreader bars for safe handling during installation
Marker tape and tracer wire: For buried pipeline location and identification
Performance Testing
Hydrostatic pressure testing: Each pipe subjected to factory pressure test at minimum 1.5 times nominal pressure per ISO 2531
Tensile testing: Mechanical property verification per ISO 6892 to confirm minimum 420 MPa tensile strength and 10% elongation
Microstructure examination: Graphite nodularity verification per ISO 945 to ensure minimum 90 percent nodularity
Lining integrity inspection: Cement mortar lining undergoes thickness measurement, hardness testing, and holiday detection
Coating quality control: Zinc coating weight measured per ISO 8179; epoxy topcoat thickness and adhesion verified
Dimensional inspection: Outside diameter, wall thickness, and socket geometry checked against ISO 2531 tolerances
Third-party inspection: SGS, Bureau Veritas, or client-nominated inspector available
Material certification: EN 10204 Type 3.1 documentation provided with each shipment
Standards
Product standard: ISO 2531 / EN 545 (water) / EN 598 (sewage)
Joint design: ISO 2531 / EN 545
Gasket: EN 681-1 / ISO 4633
Lining: ISO 4179 / EN 545
External coating: ISO 8179 / EN 14901
Testing: ISO 2531 / EN 545 / EN 598
Note: Materials, lining types, and external coating systems can be customized to meet project specifications, including UL/FM certification for fire protection applications.
