ANSI B16.5 Blind Flanges

Reliable Pressure Sealing for Pipeline Termination

ANSI B16.5 Blind Flanges are designed to securely seal the ends of piping systems, pressure vessels, and equipment openings. Manufactured in accordance with the ASME/ANSI B16.5 standard, these flanges provide a dependable solution for isolating pipelines during maintenance, pressure testing, system expansion, or future connections. Their solid, non-bored construction ensures excellent pressure containment and long-term sealing performance across a wide range of industrial applications.

Premium Materials and Precision Manufacturing

Our blind flanges are produced from high-quality carbon steel, stainless steel, alloy steel, duplex stainless steel, and other specialized materials to meet diverse operating conditions. Advanced forging, machining, and heat treatment processes ensure superior mechanical strength, dimensional accuracy, and surface finish. Every flange is carefully inspected to guarantee full compliance with international quality standards and customer specifications.

Excellent Pressure and Corrosion Resistance

Designed to withstand demanding service environments, ANSI B16.5 Blind Flanges offer outstanding resistance to high pressure, elevated temperatures, corrosion, and mechanical stress. Their solid construction eliminates flow openings, providing maximum sealing reliability for pipelines carrying liquids, gases, steam, chemicals, and petroleum products. Appropriate gasket selection further enhances leak-tight performance under various operating conditions.

Wide Range of Sizes and Pressure Classes

Our blind flanges are available in sizes from 1/2" to 24" and pressure ratings including Class 150, 300, 400, 600, 900, 1500, and 2500. Various facing types such as Raised Face (RF), Ring Type Joint (RTJ), and Flat Face (FF) are available to match different sealing requirements. Customized dimensions, materials, coatings, and marking services can also be provided according to project specifications.

Broad Industrial Applications

ANSI B16.5 Blind Flanges are widely used in oil and gas, petrochemical, chemical processing, power generation, water treatment, shipbuilding, offshore engineering, pharmaceutical manufacturing, pulp and paper, and industrial processing facilities. They are ideal for temporary or permanent pipeline closures, equipment isolation, hydrostatic testing, and future pipeline expansion projects.

Strict Quality Assurance

Each blind flange undergoes comprehensive quality control throughout production. Dimensional inspection, chemical composition analysis, mechanical property testing, hardness testing, non-destructive examination (NDT), hydrostatic testing, and pressure verification are carried out when required. Products are manufactured under a rigorous quality management system to ensure consistent performance, safety, and reliability in critical industrial environments.

Custom Manufacturing and Global Supply

We provide OEM and customized manufacturing services to satisfy various engineering requirements. Surface treatments, special materials, anti-corrosion coatings, customized markings, and dedicated packaging can all be supplied based on customer needs. Supported by efficient production capabilities, professional technical expertise, and reliable worldwide logistics, we deliver high-quality ANSI B16.5 Blind Flanges for projects around the globe with stable quality and on-time delivery.