Premium Ductile Iron Elbow for Superior Piping Solutions

Our high-quality ductile iron elbows provide exceptional durability and performance for various piping applications. Manufactured to meet international standards, these components ensure reliable fluid transportation in demanding environments.

Product Specifications

Key Features:

• Material: High-grade ductile iron (ASTM A536)
• Pressure Rating: Class 150, 250, and 300 available
• Temperature Range: -20°F to 400°F (-29°C to 204°C)
• Surface Treatment: Epoxy coating or galvanized finish
• Standards Compliance: ANSI/AWWA C110, ISO 2531
• Available Angles: 45°, 90°, and custom degrees

Size (inches)	Wall Thickness (mm)	Weight (lbs)	Maximum Pressure (PSI)
2"	5.6	3.2	350
4"	6.3	8.7	300
6"	7.1	15.2	250
8"	8.0	24.6	200
10"	9.0	38.5	180

Ductile Iron Elbow Advantages

Compared to other materials, ductile iron elbows offer superior strength-to-weight ratio, excellent corrosion resistance, and outstanding impact resistance. The unique nodular graphite structure provides enhanced flexibility while maintaining the durability of cast iron.

Installation Guidelines

For optimal performance of your ductile iron elbow:

• Ensure proper alignment before installation
• Use compatible gaskets and sealing materials
• Follow torque specifications for flange connections
• Allow for thermal expansion in high-temperature applications
• Implement cathodic protection in highly corrosive environments

Ductile Iron Elbow FAQ

Q: What is the difference between ductile iron elbow and cast iron elbow?

A: Ductile iron elbows contain nodular graphite which gives them superior strength and flexibility compared to traditional cast iron. They have about 3 times the tensile strength, greater impact resistance, and can withstand higher pressures while maintaining all the corrosion resistance benefits of cast iron.

Q: How long does a ductile iron elbow typically last?

A: With proper installation and maintenance, our ductile iron elbows have a service life of 50+ years in most applications. The actual lifespan depends on factors like fluid characteristics, operating pressure, temperature conditions, and environmental exposure. Epoxy-coated versions in non-aggressive environments can last even longer.

Q: Can ductile iron elbows be used for potable water systems?

A: Yes, our ductile iron elbows meet NSF/ANSI 61 certification for potable water applications. We offer special cement-mortar linings or FDA-approved epoxy coatings that ensure water quality standards are maintained while preventing internal corrosion.

Technical Comparison

Property	Ductile Iron Elbow	Carbon Steel Elbow	PVC Elbow
Tensile Strength	60,000 psi	70,000 psi	7,000 psi
Impact Resistance	Excellent	Good	Poor
Corrosion Resistance	Very Good	Poor (needs coating)	Excellent
Temperature Range	-20°F to 400°F	Up to 800°F	Up to 140°F
Cost Factor	Medium	High	Low

Ductile Iron Elbow Applications

Our products are widely used in:

• Water distribution systems
• Sewage and wastewater treatment plants
• Fire protection systems
• Industrial process piping
• Oil and gas pipelines
• HVAC systems
• Irrigation networks

Ductile Iron Elbow FAQ (Continued)

Q: What maintenance is required for ductile iron elbows?

A: Ductile iron elbows require minimal maintenance. Periodic inspections for external corrosion, joint integrity checks, and monitoring of lining condition (for water applications) are recommended. In aggressive environments, recoating may be needed every 15-20 years to maintain optimal performance.

Q: Can ductile iron elbows be welded for repairs?

A: While possible, welding ductile iron elbows requires specialized procedures and should only be performed by qualified technicians. We generally recommend replacement over repair welding for critical applications, as improper welding can compromise the material properties.

Q: What sizes of ductile iron elbows are available?

A: We stock standard sizes from 2 inches to 48 inches in various pressure classes. Larger diameters and special configurations can be custom manufactured with typical lead times of 4-6 weeks. Flanged, mechanical joint, and push-on connection types are all available.

Quality Assurance

All our ductile iron elbows undergo rigorous quality control:

• Chemical composition analysis
• Tensile and impact testing
• Dimensional verification
• Coating thickness measurement
• Hydrostatic pressure testing
• Visual inspection

Packaging and Shipping

Our ductile iron elbows are carefully packaged to prevent damage during transit:

• Individual wrapping for corrosion protection
• Wooden crates for large sizes
• Palletized for smaller diameters
• Custom packaging available for special requirements

Ductile Iron Elbow FAQ (Final Section)

Q: What certifications do your ductile iron elbows have?

A: Our products carry multiple international certifications including ISO 9001, ANSI/AWWA C110, EN 545, and NSF/ANSI 61. Regional certifications like WRAS (UK), ACS (France), and KTW (Germany) are available upon request for specific markets.

Q: How do I choose the right pressure class for my application?

A: Pressure class selection depends on system operating pressure, surge pressure expectations, and safety factors. Our engineers can help determine the appropriate class based on your specific parameters. Generally, Class 150 suits most municipal water systems, while industrial applications often require Class 250 or higher.

Q: What's the lead time for standard ductile iron elbows?

A: Most standard sizes and configurations are available from stock with immediate shipment. For large quantity orders or special requirements, typical production lead time is 2-4 weeks. Expedited manufacturing can be arranged for urgent projects.

Why Choose Our Ductile Iron Elbows?

• Over 30 years of manufacturing expertise
• Consistent quality across all production batches
• Competitive pricing with volume discounts
• Technical support from experienced engineers
• Global supply chain with reliable delivery
• Comprehensive after-sales service