ANSI CL 150–300 Flanges – ASME B16.5 Rated Pipe Flanges
ANSI CL 150–300 flanges are pressure-rated flanges manufactured as per ASME B16.5 standards, widely used in piping systems up to 300 psi (CL300). These flanges are designed for connecting pipes, valves, pumps, and other equipment, ensuring a leak-proof and secure connection. Werner Flanges Inc. offers a comprehensive range of ANSI flanges in both Class 150 and Class 300 pressure ratings, suitable for moderate to high-pressure applications.
ANSI CL 150 and CL 300 flanges are widely used in industries such as oil & gas, water treatment, HVAC, power generation, shipbuilding, and chemical processing. CL150 flanges are typically used in low-to-moderate pressure systems, whereas CL300 flanges are preferred for higher pressures and critical piping systems.
At Werner Flanges Inc., we maintain a wide inventory of ANSI flanges in sizes from ½” to 24″, in multiple pressure ratings, facing types (RF, FF, RTJ), and drilling configurations. Available flange types include weld neck, slip-on, socket weld, threaded, lap joint, and blind flanges. We support urgent project timelines with fast dispatch, mill certification, and full compliance to ASME, NACE, and ISO standards.
Werner Flanges Inc. is a globally recognized manufacturer and exporter of ANSI flanges with years of experience supplying to EPCs, OEMs, and plant contractors across the globe. Our flanges are precision-machined, quality-checked, and supplied with complete documentation including MTCs, hydrostatic tests, and dimensional reports. We ensure technical excellence, competitive pricing, and reliable delivery.
ANSI CL 150–300 Flanges – ASME B16.5 Rated Pipe Flanges
Technical Specifications
| Specification | Details |
|---|---|
| Standard | ASME B16.5 / ANSI B16.5 |
| Flange Types | Weld Neck, Slip-On, Socket Weld, Blind, Threaded, Lap Joint |
| Pressure Ratings | Class 150 / Class 300 |
| 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, PED, ISO, IBR |
Material Specifications for ANSI CL 150–300 Flanges – ASME B16.5 Rated Pipe 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 150–300 Flanges – ASME B16.5 Rated Pipe Flanges
- ANSI CL150 Flange
- ANSI CL300 Flange
- ASME B16.5 Flange
- ANSI Weld Neck Flange
- Class 150/300 Pipe Flanges
- ANSI Slip-On Flange
- ANSI Raised Face Flange
Industries and Applications of ANSI CL 150–300 Flanges – ASME B16.5 Rated Pipe 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 150–300 Flanges – ASME B16.5 Rated Pipe Flanges
Q1: What is the difference between ANSI CL 150 and CL 300 flanges?
A: CL150 flanges are rated for lower pressure systems (150 psi), while CL300 flanges can handle higher pressures (up to 300 psi) and offer thicker construction.
Q2: Are ANSI flanges interchangeable with DIN flanges?
A: No, ANSI and DIN flanges follow different dimensional and pressure rating standards. Adapters are needed for compatibility.
Q3: What materials are available for ANSI Class 150–300 flanges?
A: Werner Flanges Inc. supplies flanges in carbon steel, stainless steel, alloy steel, and duplex materials.
Q4: Can these flanges be used in corrosive environments?
A: Yes, stainless steel and alloy variants (like ASTM A182 F316L or Inconel) are suitable for corrosive services.
Q5: What documentation is provided with each shipment?
A: We supply MTC (EN 10204 3.1/3.2), NDT reports, dimensional reports, and test certificates on request.
Q6: Are ANSI flanges compatible with ASME B16.5 standards?
A: Yes, ANSI and ASME B16.5 flanges are synonymous and fully compatible.
Q7: Do you provide custom drilling or special coatings?
A: Yes, we offer custom drilling patterns, PTFE coating, epoxy painting, and galvanizing as per project needs.
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