ANSI CL 1500–2500 Flanges – High-Pressure ASME B16.5 Flanges
ANSI CL 1500–2500 flanges are designed for ultra-high-pressure piping systems in demanding industrial environments. These flanges conform to ASME B16.5 and are engineered to handle pressure levels far beyond standard flange classes. Werner Flanges Inc. produces and supplies ANSI Class 1500 and 2500 flanges in a range of materials and configurations to support critical operations with utmost reliability.
These flanges are widely used in refineries, chemical processing plants, offshore oil platforms, high-pressure steam lines, power generation units, and heavy industrial systems. Due to their exceptional strength and tight-sealing capabilities, they are essential for applications involving extreme pressure and high-temperature media.
Werner Flanges Inc. stocks a complete range of ANSI CL 1500 and CL 2500 flanges, including weld neck, blind, and socket weld designs. Available in sizes from ½” to 24″, these flanges come in RF (Raised Face), RTJ (Ring Type Joint), and custom facings. We also offer CNC machining, hydrostatic testing, and third-party inspection as per project requirements.
With a global footprint and years of manufacturing experience, Werner Flanges Inc. is a trusted source for ANSI CL 1500–2500 flanges. Our flanges meet international standards for performance, traceability, and quality. Whether you're handling a high-risk energy project or routine plant maintenance, our engineering team ensures the right fit for your pressure-class needs.
ANSI CL 1500–2500 Flanges – High-Pressure ASME B16.5 Flanges Technical Specifications
| Specification | Details |
|---|---|
| Standard | ASME B16.5 / ANSI B16.5 |
| Flange Types | Weld Neck, Blind, Socket Weld |
| Pressure Ratings | Class 1500, Class 2500 |
| Size Range | ½” to 24″ (DN15 to DN600) |
| Facing Types | Raised Face (RF), Ring Type Joint (RTJ) |
| Manufacturing Process | Forged / Machined |
| Testing & Certification | EN 10204 3.1 / 3.2, NACE MR0175, ISO 9001, PMI, Ultrasonic |
Material Specifications for ANSI CL 1500–2500 Flanges – High-Pressure ASME B16.5 Flanges
| 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 |
| Titanium-Steel, Nickel-Steel, Titanium-Copper, Stainless Steel-Carbon Steel, Bimetallic/Trimetallic Combinations |
Types of ANSI CL 1500–2500 Flanges – High-Pressure ASME B16.5 Flanges
- ANSI 1500 lb Flange
- ANSI 2500 lb Flange
- Class 1500 Pressure Flange
- Class 2500 Forged Flange
- ASME B16.5 High Pressure Flange
- 1500# RTJ Flange
- 2500# Weld Neck Flange
Industries and Applications of ANSI CL 1500–2500 Flanges – High-Pressure ASME B16.5 Flanges
| 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 ANSI CL 1500–2500 Flanges – High-Pressure ASME B16.5 Flanges
Q1: What is the pressure rating of ANSI CL 1500 and 2500 flanges?
A: At 100°F, Class 1500 flanges are rated around 3705 psi and Class 2500 flanges around 6170 psi, depending on material and design.
Q2: Are these flanges suitable for high-temperature applications?
A: Yes. When manufactured from suitable alloys, ANSI CL 1500–2500 flanges can handle high temperatures up to 593°C.
Q3: What facing types are available for Class 1500–2500 flanges?
A: Werner Flanges Inc. supplies these flanges with Raised Face (RF) and Ring Type Joint (RTJ) facings.
Q4: What are the common types of flanges in these pressure classes?
A: Weld Neck and Blind flanges are the most commonly used for CL 1500 and 2500 due to their sealing strength.
Q5: Do these flanges conform to ASME B16.5?
A: Yes, all flanges are manufactured to ASME B16.5 standards.
Q6: Can you provide third-party inspection reports?
A: Absolutely. We offer third-party inspection and certification through agencies like Lloyd’s, TUV, and DNV.
Q7: Are these flanges available for export?
A: Yes. Werner Flanges Inc. exports ANSI CL 1500–2500 flanges globally with full documentation and compliance.
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