Ductile iron flange
Ductile Iron Flange: The Premium Choice for Industrial Piping Systems
When it comes to high-performance piping connections, ductile iron flanges stand out as the preferred choice for engineers and contractors. These robust components combine strength, durability, and reliability to create leak-proof joints in demanding industrial applications.
Why Choose Our Ductile Iron Flanges?
Our ductile iron flanges offer superior quality with these advantages:
- Exceptional tensile strength and impact resistance
- Superior corrosion resistance compared to standard cast iron
- Excellent machinability for precise fitting
- Long service life even in extreme conditions
- Cost-effective alternative to steel flanges
Ductile Iron Flange Technical Specifications
| Parameter | Specification |
|---|---|
| Material Grade | ASTM A536 65-45-12 |
| Pressure Rating | 150# to 2500# |
| Size Range | 1/2" to 60" (DN15 to DN1500) |
| Surface Finish | Epoxy coated, galvanized or bare |
| Temperature Range | -20°F to 400°F (-29°C to 204°C) |
| Standards | ANSI/ASME B16.1, BS EN 1092, AWWA C110/C111 |
Ductile Iron Flange Types We Offer
- Weld Neck Flanges: Ideal for high-pressure applications
- Slip-On Flanges: Easy installation with good strength
- Blind Flanges: For sealing pipe ends
- Threaded Flanges: Suitable for low-pressure systems
- Lap Joint Flanges: For systems requiring frequent disassembly
Ductile Iron Flange FAQ Section
Q: What makes ductile iron flanges better than cast iron flanges?
A: Ductile iron flanges offer significantly higher tensile strength (65 ksi vs 20 ksi), better impact resistance, and improved ductility. The graphite in ductile iron forms in spherical nodules rather than flakes, creating a material that can bend without breaking. This makes them more resistant to cracking under pressure surges or ground movement.
Q: Can ductile iron flanges be used for potable water systems?
A: Yes, when properly lined with certified materials. Our ductile iron flanges meet AWWA standards for waterworks applications and can be supplied with NSF-approved cement mortar, epoxy, or other sanitary linings suitable for drinking water contact.
Q: How do I determine the right pressure rating for my ductile iron flange?
A: The pressure rating depends on several factors including system operating pressure, temperature, medium being conveyed, and applicable standards. For ANSI/ASME B16.1 flanges, common classes are 125# and 250#. Higher pressure systems may require special class flanges. Our engineering team can help select the appropriate rating based on your specific requirements.
Ductile Iron Flange Installation Guidelines
Proper installation is crucial for optimal performance of ductile iron flanges:
- Inspect flange faces for damage before installation
- Clean mating surfaces thoroughly
- Use appropriate gasket material for the service conditions
- Tighten bolts in a criss-cross pattern in multiple stages
- Follow recommended torque values for the specific flange class
- Check for leaks after initial pressurization
Ductile Iron Flange Applications
Our ductile iron flanges serve critical roles in numerous industries:
- Water treatment and distribution systems
- Wastewater collection networks
- Oil and gas pipelines
- Chemical processing plants
- Power generation facilities
- HVAC systems for large buildings
Ordering Information for Ductile Iron Flanges
When ordering, please specify these key parameters:
- Flange type (WN, SO, BL, etc.)
- Nominal size and pressure class
- Drilling standard (ANSI, DIN, etc.)
- Face finish (RF, FF, RTJ)
- Coating or lining requirements
- Quantity needed
Our ductile iron flanges are manufactured to the highest quality standards with full traceability. Each flange undergoes rigorous inspection including dimensional checks, material verification, and coating thickness measurements to ensure compliance with specifications.