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What are Spade Flanges? Types & Their Applications

What are Spade Flanges? Types & Their Applications

What are Spade Flanges? Types & Their Applications


At SK Steel Corporation, we take immense pride in being a leading Industrial Spade Flanges Manufacturer & Supplier. With years of expertise in the steel industry, we have established ourselves as a reliable and customer-centric organization. Our commitment to excellence and dedication to providing top-notch products have earned us the trust and loyalty of countless clients. 

Spade Flanges are specialized components used in piping systems to blank off or isolate sections of pipelines. These flanges come with a spacer placed between two flanges to prevent the flow of fluid or gas in a specific direction, effectively blocking off that section from the rest of the pipeline. The use of Spade Flanges is essential in applications where maintenance, repairs, or modifications are required without interrupting the flow in the main pipeline.

Industrial spade flanges, often referred to as paddle spacers or paddle blinds, are frequently used to manage pressure, regulate fluid flow in pipelines, and maintain the linked systems. We will go further into the world of spade flanges in this long blog post, examining their numerous varieties, uses, and the critical function they play in maintaining the effectiveness and safety of industrial operations.

Understanding Industrial Spade Flanges

A flat, often circular piece of metal and a blind, which is effectively a solid plate with a hole in the middle, are combined to form a spade flange. The blind is the “spade,” while the flat piece is the “spacer” or “paddle.” These two components are frequently welded together to form an integrated unit. Several materials can be used to create the spade and spacer, although alloy steel, carbon steel, and stainless steel are popular options.

Spade Flanges

Types of Spade Flanges

Paddle Spacer Flange: The paddle spacer flange consists of a spacer, frequently with a matching hole, and a circular paddle or spade with a hole in the middle. They are used in pipelines for upkeep, inspection, or pressure reduction. To access the system’s internal components, the spacer is simply removed.

Spectacle Blind Flange: Another kind of the spade flange is the spectacle blind flange. It comprises of a paddle that may be positioned to prevent flow while performing maintenance and repairs or turned to align with the bore of the flange, enabling flow.

Applications of Industrial Spade Flanges

Pressure Relief: Spade flanges are essential for controlling pipeline pressure. During maintenance and inspection processes, the flow can be entirely stopped and pressure can be safely released by inserting a spacer.

Maintenance and Inspection: The use of spade flanges to separate particular pipeline segments makes maintenance and inspection procedures easier. This saves time and costs by avoiding the need to shut down the entire system.

Fluid Flow Control: In systems where it is important to regulate the flow of fluids, spade flanges are used. The flow may be changed or halted as required by spinning the paddle.

System Safety: Spade flanges are essential for maintaining pipeline security and avoiding incidents. Their use enables regulated section isolation, lowering the possibility of unexpected leaks or pressure buildup.

Chemical and Petrochemical Industries: In the chemical and petrochemical sectors, where the transportation of dangerous materials necessitates exact control and maintenance processes, spade flanges are frequently utilized.

Oil and Gas Industry: The oil and gas sector utilizes spade flanges in pipelines, offshore platforms, and refineries, ensuring the safety and efficiency of fluid transport.

Power Generation: Additionally essential in power producing facilities are spade flanges. They are utilized in heat exchangers, boilers, and other machinery that needs routine maintenance and inspection.


Industrial spade flanges are little but powerful parts of the pipe and plumbing industry. They are crucial for the effective and secure running of several industrial processes because to their wide range of uses, including pressure relief, maintenance, and fluid flow control. Without these little bits of metal, industry would face enormous difficulties with regard to maintenance, operating efficiency, and safety.

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