Ductile Iron Double Flanged Taper

The double flanged duckfoot bend provides a tight 90 degree turn in piping systems, minimizing turbulence and erosion through its compact gooseneck shape. Constructed from carbon steel, stainless steel, alloy steel, or custom materials, with double flanges for robust sealing and reduced leakage. Flanges in weld neck or slip-on styles suit your requirements.

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Description

Ductile Iron Double Flanged Taper Description

Ductile iron double flanged taper pipe fittings deliver robust performance and exceptional durability for the most demanding applications. Constructed from high-grade ductile iron, these fittings boast impressive tensile and yield strength to handle heavy loads and pressure surges. The double flange design provides a secure, leak-proof seal while allowing easy installation and maintenance. Tapered ends enable quick transition between different pipe sizes. Both inner and outer surfaces are coated for corrosion resistance. With their rugged build and premium construction, these fittings offer reliable service life even in the harshest conditions. Ideal for water, wastewater, chemical and other critical piping systems, ductile iron double flanged taper fittings give you confidence in maximizing safety and minimizing downtime.

Ductile iron products adhere to stringent industry standards for quality assurance. Our pipes, fittings, and accessories conform to ISO2531 and EN545 specifications for water delivery, as well as EN598 specifications for sewage piping. To prevent corrosion, pipes feature a protective zinc coating per ISO8179 standards. We also follow specifications from ISO4179 for cement mortar linings and ISO4633 for joint seal rings.

For complete compatibility, supplies gaskets and fasteners tailored to the customer’s specifications. We understand every application is unique, so we offer custom dimensions on all our ductile iron fittings as well. With strict compliance to industry standards and custom-designed components, ensures optimal durability, performance, and safety. Contact our engineering team today to explore how our ductile iron products can meet your needs.

Ductile Iron Double Flanged Taper specification

Products Name:
Double Flanged Duckfoot Bend 90 Degree
Manufacturing Standard:
ISO 2531  EN545/598  AWWA C110/C153
Material:
Ductile iron 500-7/450-12 as per ISO 1083
Class:
K12, K14 for Tee and Cross
Wall Thickness Calculation:
e=K(0.5+0.001DN)
Type of joint:
Flanged/Push-in(Tyton)/Mechanical(K)/Restrained/PVC
Flange drilling:
ISO 7005-2/EN1092-2
Chemical analysis:

C: 3.4-3.9% 

Si: 2.5-3.0%
Mn: ≤0.4%
S: ≤0.02%
P: ≤0.08%
Mg: 0.02-0.06%
RE: 0.02-0.04%
Mechanical Properties:
Tensile strength:
≥420 N/mm²
Yield strength:
≥300 N/mm²
Elongation:
≥5 %
Brinell hardness:
≤250 HB
Linning:
Standard:
ISO 4179
Material:

Cement mortar lining(G.P./S.R./H.A.)

Fusion bonded epoxy
Painting Epoxy
PU
Coating:
Standard:
ISO 8179
Material:

Zinc&Bitumen

Fusion bonded epoxy
Painting Epoxy
PU
Marking:
Casted on body:

Logo

Standard
DI
Size
Class&Pressure
Month & year of manufacture
Inspection Standard:
ISO 2531 EN545/598 AWWA C110/C153

Ductile Iron Double Flanged Taper Features:

• Constructed from high-strength ductile iron for durability and performance. Ductile iron has high tensile and yield strength.

• Double flange design provides leak-proof seal and allows easy installation and maintenance. Flanges can be bolted to connect piping.

• Tapered ends enable quick transition between different pipe sizes and allow for some misalignment.

• Inner and outer surfaces coated for corrosion resistance. Protects against wear from flow and exterior elements.

• Rugged build stands up to heavy loads, pressure surges, vibration, and more.

• Thicker walls compared to steel for increased toughness and longer service life.

• Flanges allow easy disassembly for maintenance, inspection or modification.

• Compatible with ANSI/AWWA pipe flanges for standardized connections.

• Excellent flow characteristics and low head loss. Tapered inlets don’t impede flow.

Ductile Iron Double Flanged Taper Advantages:

• Durability – The ductile iron construction provides exceptional strength and long service life, even under heavy loads and vibration. Far more durable than fittings made from other materials.

• Leak Prevention – The double flange design creates a tight, secure seal to prevent leaks at connections. Flanges can be pulled together tightly.

• Ease of Installation – Flanges allow simple bolting and unbolting for installation and maintenance. Tapered ends help align pipes of different sizes.

• Flow Efficiency – The tapered inlet profile maintains smooth flow and minimizes turbulence, reducing head loss compared to abrupt size changes.

• Corrosion Resistance – Inner and outer coatings protect against corrosion from internal fluids and exterior elements.

• Standardized Connections – ANSI/AWWA flanges provide standardized bolt circles and dimensions for universal connections.

• Pressure Capability – Thick, rugged walls give ductile iron the strength to withstand high surge pressures without damage.

• Low Maintenance – Ductile iron construction and protective coatings significantly reduce the need for maintenance over time.

• Safety – The leak-tight seals and durable construction ensure safe operation with hazardous or toxic fluids.

Ductile Iron Double Flanged Taper applications ：

• Water Supply Systems – Used extensively in municipal drinking water systems, from source piping to distribution mains. Provides durable and reliable transport of potable water.

• Wastewater Systems – Ideal for sewage and effluent pipes where corrosion resistance and leak-proof joints are critical. Can withstand surges.

• Chemical Processing – Used to safely contain and convey corrosive chemicals like acids, solvents, and petrochemicals. Protective linings prevent corrosion.

• Fire Protection Systems – Provides the strength and standardized flange connections needed for reliable fire suppression water mains and hydrant branches.

• Power Plants – Used in water piping systems that supply cooling water, steam, and more. Withstands vibration and high temperatures.

• Mining – Rugged construction makes these fittings suitable for mine dewatering and mineral slurry lines that experience heavy abrasion.

• Marine Piping Systems – Seawater corrosion resistance allows use in bilge, ballast and cargo/tanker piping for ships and offshore rigs.

• Industrial Refrigeration – Handles temperature extremes in chilled water and brine piping with proper material selection.

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