AWWA C207 Class E Ring Flange | Manufacturer & Supplier

AWWA C207 Class E Ring Flanges – High Pressure Steel Flange Solutions

The AWWA C207 Class E Ring Flange is a heavy-duty, high-strength steel flange designed to handle pressures of 275 to 400 psi in waterworks and industrial piping systems. Engineered for demanding environments, these flanges are flat-ring types without hubs, manufactured in accordance with AWWA C207 specifications and commonly drilled to ANSI B16.5 Class 300 standards. Werner Flanges Inc. offers precision-machined Class E ring flanges that ensure a secure, leak-free connection in high-pressure applications.

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Class E ring flanges are ideal for municipal water supply systems, fire protection lines, pump stations, wastewater treatment plants, and other utility projects where high working pressure is critical. Their strength and dimensional accuracy make them well-suited for above-ground and underground installations. They are often preferred as a cost-effective alternative to forged ANSI Class 300 flanges in large-diameter systems.

Werner Flanges Inc. supplies Class E Ring Flanges in sizes ranging from 4 inches to 144 inches, with flexible options in facing (flat face), drilling (ANSI B16.5), and corrosion-resistant coatings. We maintain a ready inventory of carbon steel flanges in various grades and surface treatments, including black paint, red oxide, and hot-dip galvanizing. Custom orders for special material grades or project specifications are supported with quick turnaround.

With a strong global presence and a reputation for precision engineering, Werner Flanges Inc. is a trusted supplier for AWWA standard flanges. Our Class E flanges undergo rigorous quality checks, comply with all applicable standards, and come with detailed mill test certifications. Our knowledgeable team supports project procurement teams with timely documentation, competitive pricing, and logistical efficiency.

AWWA C207 Class E Ring Flanges – High Pressure Steel Flange Solutions | Technical Specifications

Specification	Details
Standard	AWWA C207 – Class E
Flange Types	Flat Ring Flange
Pressure Ratings	275–400 psi
Size Range	4” to 144”
Facing Types	Flat Face (FF)
Manufacturing Process	Forged / Machined
Testing & Certification	MTC 3.1, Dimensional, Hydro Test (on request)

Material Specifications for AWWA C207 Class E Ring Flanges – High Pressure Steel Flange Solutions

Type of Materials	Common Specifications / Customization Available on Request
Duplex Steel	ASTM/ASME A182 F51, F60, F61, UNS S31803, UNS S32205
Super Duplex Steel	ASTM/ASME A182 F53, F55, UNS S32750, UNS S32760, F44 (6Mo)
Stainless Steel	ASTM/ASME A182 F304, F304L, F316, F316L, F310, F317L, F321, F347
Carbon Steel	ASTM A105, A350 LF1, LF2, LF3, A266 Class 1/2, A694 F42 to F70, A765 Gr. II
Alloy Steel	ASTM/ASME A182 F1, F5, F9, F11, F12, F22
Non-Ferrous Alloys	Titanium, Brass, Admiralty Brass, Copper Nickel, Nickel Alloys, Hastelloy
Titanium	ASTM/ASME B381 Gr.1, Gr.2, Gr.5, Gr.7, Gr.12, Gr.16
Copper Nickel	ASTM B151 UNS C70600 (Cu-Ni 90/10), C71500 (Cu-Ni 70/30)
Brass, Al-Brass	ASTM B152 UNS C26000, C27200, C28000; ASTM B111 for Al-Brass
Nickel Alloys	ASTM B160, B161, B564 – UNS N02200, N02201, N04400, N08800, N08825, N06600, N06601, N06625, Monel K500
Alloy 20	ASTM B462 UNS N08020
Hastelloy	ASTM B564 UNS N10276 (Hastelloy C276), N06022 (Hastelloy C22)
Cladded Materials	ASTM B898, B265, B424 or custom explosion/clad bonding using dissimilar metals
Cladded Materials	Titanium-Steel, Nickel-Steel, Titanium-Copper, Stainless Steel-Carbon Steel, Bimetallic/Trimetallic Combinations

Types of AWWA C207 Class E Ring Flanges – High Pressure Steel Flange Solutions

AWWA Class E Ring-Type Flange
ANSI 300 Equivalent Water Flange
AWWA C207 Steel Ring Flange
Flat Ring High-Pressure Flange
Class E AWWA Flange
Carbon Steel Waterworks Flange
Municipal Steel Pipe Flange

Industries and Applications of AWWA C207 Class E Ring Flanges – High Pressure Steel Flange Solutions

Industry	Application
Oil & Gas Industry	Used extensively in upstream, midstream, and downstream operations for high-pressure piping and processing systems requiring robust sealing solutions.
Petrochemical & Chemical Processing	Ideal for handling corrosive chemicals and high-temperature pipelines in refining and chemical manufacturing processes.
Power Generation	Installed in thermal, nuclear, and hydroelectric power plants for critical pressure applications and steam systems.
Water Treatment & Desalination	Used in high-pressure water distribution, desalination, and wastewater treatment pipelines ensuring durability and leak resistance.
Marine & Offshore Industry	Suitable for seawater piping systems, ballast systems, and pressure vessels in marine engineering and offshore platforms.
Pharmaceutical Industry	Ensures sanitary, high-pressure fluid handling in sterile environments and cleanroom process systems.
Food & Beverage Industry	Used in hygienic and high-pressure processing lines where corrosion resistance and strength are critical.
Mining & Mineral Processing	Supports slurry transport systems and ore processing pipelines in mining operations.

Frequently Asked Questions (FAQs) about AWWA C207 Class E Ring Flanges – High Pressure Steel Flange Solutions

1. What pressure can AWWA Class E Ring Flanges handle?
They are designed for operating pressures of 275 to 400 psi, depending on size and thickness.

2. Are these flanges equivalent to ANSI Class 300?
Yes, Class E flanges are often drilled to ANSI B16.5 Class 300 dimensions and serve as a cost-effective alternative.

3. What sizes are available for Class E Ring Flanges?
We offer flanges from 4” to 144”, with customization available for special projects.

4. Can these flanges be galvanized?
Yes, hot-dip galvanizing is one of the common surface treatment options for corrosion protection.

5. What materials are typically used?
Common materials include ASTM A36, A283 Gr C, A516 Gr 60, and A105 forged steel.

6. Do you offer dimensional and test certifications?
Absolutely. All flanges come with MTCs, and hydrostatic or dimensional testing is available upon request.

7. Does Werner Flanges Inc. ship internationally?
Yes, we export worldwide and provide all necessary export documentation for seamless delivery.