ANSI CL 900 Flanges – High-Pressure ASME B16.5
Flanges
ANSI CL 900 flanges are high-pressure pipe flanges designed to withstand rigorous applications where pressure ratings exceed standard classes. These flanges conform to ASME B16.5 specifications and are used in critical environments involving elevated pressure and temperature. Werner Flanges Inc. manufactures and supplies ANSI Class 900 flanges in various types and materials, offering durability, corrosion resistance, and dimensional precision for secure piping connections.
Class 900 flanges are typically found in applications within oil & gas, refineries, petrochemical plants, thermal and nuclear power stations, offshore rigs, and shipbuilding. They are used to connect valves, pumps, and pipe systems in high-pressure zones where reliability is paramount. Their usage ensures operational safety and integrity in severe service conditions.
Werner Flanges Inc. stocks and exports a wide range of ANSI CL 900 flanges, including weld neck, blind, slip-on, socket weld, lap joint, and threaded flanges. These are available with raised face (RF), flat face (FF), and ring type joint (RTJ) facing. Sizes range from ½” to 24″, with customized machining, coatings, and testing services also available on request.
With decades of expertise in flange manufacturing, Werner Flanges Inc. is a trusted partner for global B2B customers requiring ANSI Class 900 flanges. Our flanges undergo stringent quality checks and are delivered with complete certification and traceability. From quick-turnaround orders to project-based supply, we ensure professional support, competitive pricing, and on-time delivery across continents.
ANSI CL 900 Flanges – High-Pressure ASME B16.5 Flanges | Technical Specifications
| Specification | Details |
|---|---|
| Standard | ASME B16.5 / ANSI B16.5 |
| Flange Types | Weld Neck (WN), Slip-On (SO), Blind (BL), Socket Weld (SW), Threaded (TH), Lap Joint (LJ) |
| Pressure Ratings | Class 900 (900 lb) |
| Size Range | ½” to 24″ (DN15 to DN600) |
| Facing Types | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) |
| Manufacturing Process | Forged / Machined |
| Testing & Certification | EN 10204 3.1 / 3.2, NACE MR0175, IBR, ISO, PED, PMI, Ultrasonic |
Material Specifications for ANSI CL 900 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 900 Flanges – High-Pressure ASME B16.5 Flanges
- ANSI 900 lb Flange
- Class 900 Pipe Flange
- ASME B16.5 CL900 Flange
- 900# Weld Neck Flange
- High-Pressure ANSI Flange
- ANSI Raised Face 900 Flange
- 900 LB RTJ Flange
Industries and Applications of ANSI CL 900 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 900 Flanges – High-Pressure ASME B16.5 Flanges
Q1: What is the pressure rating of ANSI CL 900 flanges?
A: ANSI CL 900 flanges are rated for approximately 2220 psi at 100°F, depending on the material and temperature conditions.
Q2: What sizes are available for ANSI CL 900 flanges?
A: Werner Flanges Inc. offers sizes from ½” to 24″, with custom sizes also available upon request.
Q3: Are ANSI 900 flanges compatible with ASME B16.5 standards?
A: Yes, all ANSI CL 900 flanges are manufactured in accordance with ASME B16.5 specifications.
Q4: What flange face types are available for Class 900?
A: Raised Face (RF), Flat Face (FF), and Ring Type Joint (RTJ) are standard options.
Q5: Can I get NACE MR0175-compliant Class 900 flanges?
A: Absolutely. We offer Class 900 flanges compliant with NACE MR0175 for sour service applications.
Q6: What documentation is supplied with your flanges?
A: We provide EN 10204 3.1/3.2 mill test certificates, dimensional inspection reports, and third-party test documentation as needed.
Q7: Do you supply these flanges internationally?
A: Yes, Werner Flanges Inc. exports ANSI CL 900 flanges to over 40 countries with full compliance to global codes.
Flanges we Manufacture, Export & Supply
ANSI Flanges
ASME Flanges
AWWA Flanges
ORIFICE Flanges
API 6A/6B Flanges
Spectacle Blind & Spade Flanges
Baffle Plates
BLEED / DRIP Rings
Tube Sheets
