Special Blind Flange According to Drawing: Tailored Solutions for Diverse Industries

In industrial piping systems, precision and customization are often as crucial as quality and compliance. Among various flange types, blind flanges play a vital role in sealing and isolating pipe ends. But when off-the-shelf products can't meet unique project requirements, special blind flanges made according to drawing become the solution of choice.

What Is a Blind Flange?

A blind flange—sometimes referred to as a pipe plug or flange cover—is a solid disk used to block off a pipeline or valve. Unlike other flanges, it has no center bore. Its function is to provide a robust, removable seal that can withstand internal pressure, making it ideal for system maintenance, pressure testing, and future expansion.

Though blind flanges perform a function similar to pipe caps or heads, they offer a unique advantage: they can be unbolted and removed, offering flexibility for system modifications.

When Standard Isn’t Enough: The Need for Custom Blind Flanges

Standard flanges follow recognized specifications like ANSI, DIN, EN, or JIS. However, real-world engineering often demands more tailored solutions—such as non-standard dimensions, special materials, or unique sealing requirements. That’s where special blind flanges according to drawing come in.

Our company specializes in producing custom blind flanges based on client-provided technical drawings. Whether you're working on a complex industrial system or retrofitting legacy equipment, we deliver flanges engineered for perfect fit and peak performance.

Manufacturing Capabilities & Compliance

We manufacture both standard and non-standard flanges with a wide range of sizes and pressure ratings:

· Outer Diameter: 15mm – 2000mm

· Pressure Classes: 150–2500, PN0.6–PN400, 5K–40K, API 2000–15000

· Wall Thickness: SCH5S to XXS and more

· Standards Supported: ANSI B16.5, EN1092-1, DIN, JIS B2220, GOST, API 6A, and others

Each special flange is fabricated precisely to your specifications, with careful attention to tolerances and quality control. We also hold multiple international certifications, including TÜV, VD-TÜV, DNV, BV, ISO9001, and KR, ensuring that our products meet the highest global standards for safety and reliability.

Materials We Offer

Depending on your project's demands, we provide blind flanges in a wide selection of materials, including:

· Carbon Steel: A105, A350LF2, Q235, St37, St45.8

· Boiler and Pressure Vessel Grades: A42CP, A515 Gr.60/Gr.70, E24

· Other materials available on request

Each material undergoes rigorous inspection and is selected based on its compatibility with service conditions such as temperature, pressure, and corrosive environment.