Ductile iron 90° double-flanged duckfoot bend, a functional pipe fitting used in piping systems for changing diameter, direction, and securing pipes.
Material: Ductile iron (with a natural cast iron surface, possessing high strength and impact resistance).
Structure: 90° elbow + reducing flange (different pipe diameters at both ends) + side support base (for fixed installation).
Function: The ductile iron 90° double-flanged duckfoot bend simultaneously performs three functions: 90° pipe direction change, pipe diameter adaptation, and installation and fixing.
Body: Ductile iron grade 500-7/450-12 conforming to ISO 1083 standard.
Coating: Cement mortar lining (conforming to ISO 4179 standard), zinc primer and bitumen coating (conforming to ISO 8179 standard).
Epoxy resin coating (containing WARS epoxy powder), available in blue, black, red, or according to customer requirements.

Parameters

Material	Ductile Iron
Coating	Cement Mortal Lining
Connection	Flange
Finish	Spray Painting
Country of origin	Hebei,China
Certificate	ISO 9001/14001/45001;CE
Support customization	OEM,OBM,ODM

Advantages

Strong spatial adaptability

The special shape of the duck-foot structure allows for a 90° turn in narrow/compact pipe spaces (such as underground pipe networks and pipe galleries), saving more installation space than ordinary elbows.

Excellent load-bearing capacity

Ductile iron material + integrated casting structure can withstand the load of large-diameter pipes and heavy media (such as mud and slurry), suitable for heavy industrial applications.

High connection reliability

The double-flange design uses bolt sealing connections, which are easy to assemble and disassemble and have strong sealing performance, making later maintenance (such as gasket replacement) more convenient.

Good corrosion resistance

Ductile iron itself is resistant to acid and alkali corrosion, suitable for municipal sewage and industrial pipelines with mildly corrosive media.

Disadvantages

Application Scenarios

Municipal water supply and drainage networks

Turning points in urban sewage and rainwater drainage pipelines (especially in areas with limited underground pipeline space);

Industrial heavy-duty pipelines

Slurry and pulp conveying pipelines in chemical, metallurgical, and mining industries (the duck-foot structure is suitable for large diameter and heavy-load turning requirements);

Ship/offshore engineering pipelines

Water supply, drainage, and fuel pipelines in ship compartments and offshore platforms (90° turns in confined spaces);

Large pumping station systems

Turning connections for inlet and outlet pipes of pumping stations (double flange structure facilitates disassembly and maintenance);

Underground utility tunnel projects

Turning points for water supply and drainage pipelines within integrated utility tunnels (suitable for limited installation space within the tunnel).

Maintenance Instructions

1. Regularly inspect the flange sealing surface; if leakage occurs, replace the gasket promptly;

2. Avoid heavy external impact to prevent deformation of the elbow or support base;

3. When exposed to a humid environment for extended periods, apply anti-rust paint regularly to extend its service life.

Production process

Automatic moulding➞Electric furnace➞Peeling off➞Machining➞Ball blasting➞Pressure test➞Coating➞Airing➞Package

Company Profile

SND is headquartered in Wu An Industrial Park, Hebei Province.After several years of steady development, we have grown into an industrial enterprise integrating design, research and development, production, and sales.SND Foundry have been specializing in the production and sales of manhole cover and gully grating, valves, pipe & pipe fittings and metal castings products more than 10 years.We have 2 set of vertical production lines, 1 set of horizontal production line, 1 set of automatic painting line, shooting core machines and hand-made modeling workshop for big OEM items.We have our own design and professional team to help our clients supply one-stop service.

Our products are mainly used in railways, highways, airports, schools, public buildings, residential enclosures, security bases, and other fields. With advanced production equipment, strict process control, and a strong sense of responsibility, the company has earned the trust of its customers. Our products are not only popular in China but also exported to India, Singapore, the Middle East, Mexico, the United States, Europe, and other countries and regions.

FAQ

Q: Can the pipe diameters at both ends be customized?

A: Yes (OEM/ODM options available; customized reduced-diameter specifications are possible upon request, such as DN80 × DN100);

Q: Is the support base removable?

A: Typically, it's an integrated cast/welded structure and not removable (some models support customizable removable supports);

Q: What is the working pressure?

A: The standard working pressure for the ductile iron version is 1.6, 2.5MPa, suitable for medium and low-pressure pipelines.

Q: Can you manufacture products according to customer requirements?

A: Yes, we can manufacture products exactly according to your specifications.

Q: Can I visit your factory before placing an order?

A: Yes, you are welcome to visit our factory to inspect the product quality.

Q: Do you accept small orders?

A: Absolutely.

Q: Can we choose different materials?

A: Yes, the materials can be selected according to your requirements.

Q: What are your shipping and delivery times?

A: We ship by sea or air. Typically, delivery time is 7 to 14 days, depending on your order quantity.

Q: What is your terms of delivery?

A: We accepte EXW,FOB,CIF,etc. You can choose the one which is the most convenient for you.

Q: What's the package and how do you ship the goods?

A: Usually is wood pallet as your requst. We usually ship by sea.
Airline shipping is also optional.

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Ductile Iron 90° Double Flanged Duckfoot Bend