ANSI B16.5 Threaded (Screwed) Flanges

Reliable Flange Solution for Threaded Piping Systems

ANSI B16.5 Threaded (Screwed) Flanges are manufactured in accordance with ASME/ANSI B16.5 standards and are specifically designed for piping systems where welding is impractical or undesirable. Featuring precision-machined internal threads, these flanges can be directly screwed onto threaded pipes, providing a secure and leak-resistant connection without the need for welding. They are widely used in low- to medium-pressure systems, hazardous environments, and applications requiring easy installation, maintenance, or disassembly.

Premium Materials and Precision Manufacturing

Our ANSI B16.5 Threaded Flanges are manufactured from high-quality carbon steel, stainless steel, alloy steel, duplex stainless steel, and other specialized materials to meet the demands of various industrial applications. Advanced forging processes, precision CNC machining, accurate thread cutting, and controlled heat treatment ensure exceptional dimensional accuracy, reliable thread engagement, and superior mechanical strength. Every flange is produced in strict accordance with ASME/ANSI B16.5 specifications to ensure compatibility with standard threaded piping systems.

Excellent Sealing Performance and Mechanical Strength

Designed for dependable long-term operation, ANSI B16.5 Threaded (Screwed) Flanges provide excellent resistance to pressure, corrosion, vibration, and temperature fluctuations. Their threaded connection eliminates the need for welding, making installation faster while reducing the risk of heat-related material distortion. When combined with appropriate thread sealants and gaskets, these flanges deliver reliable sealing performance and help maintain system integrity under demanding operating conditions.

Wide Range of Sizes and Pressure Classes

Our threaded flanges are available in sizes from 1/2 inch to 24 inches, with pressure ratings including Class 150, Class 300, Class 400, Class 600, Class 900, Class 1500, and Class 2500, depending on application requirements. Facing options such as Raised Face (RF) and Flat Face (FF) are available to accommodate different sealing needs. Customized dimensions, thread types, materials, protective coatings, and special machining services can also be provided according to customer specifications.

Suitable for Diverse Industrial Applications

ANSI B16.5 Threaded Flanges are widely used in oil and gas production, petrochemical facilities, chemical processing plants, water treatment systems, fire protection pipelines, compressed air systems, power generation, marine engineering, pharmaceutical manufacturing, food processing, instrumentation systems, and general industrial piping networks. They are particularly suitable for small-diameter, high-pressure piping and installations where welding is restricted due to safety, maintenance, or operational requirements.

Strict Quality Control and Inspection

Every ANSI B16.5 Threaded Flange undergoes comprehensive quality control throughout production. Chemical composition analysis, mechanical property testing, dimensional inspection, thread accuracy verification, hardness testing, non-destructive testing (NDT), surface examination, and final visual inspection are conducted to ensure compliance with international standards and customer specifications. Additional testing, including ultrasonic inspection, magnetic particle testing, and third-party certification, is available upon request.

OEM Manufacturing and Global Supply

We provide OEM and customized manufacturing services to support EPC contractors, distributors, wholesalers, and industrial end users worldwide. Customized materials, pressure ratings, thread specifications, anti-corrosion coatings, laser marking, packaging, and inspection documentation can all be supplied according to project requirements. Backed by advanced manufacturing equipment, experienced engineering teams, and efficient international logistics, we deliver high-quality ANSI B16.5 Threaded (Screwed) Flanges with consistent quality, reliable performance, and on-time global delivery.