Stainless Steel 347H Flanges

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Stainless Steel 347H Flanges Manufacturer, Exporter and Supplier in Dubai, UAE

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Stainless Steel 347H flanges stand as essential components in various piping systems, celebrated for their exceptional mechanical prowess and resistance to corrosion. custom-built from Stainless Steel 347H, renowned for its outstanding heat resistance and durability, these flanges offer unparalleled reliability in demanding applications. With a composition rich in chromium, nickel, and tantalum, Stainless Steel 347H exhibits remarkable resistance to high-temperature oxidation, making it a preferred choice for industries requiring steadfast performance under extreme heat and pressure. Moreover, its alloying elements contribute to elevated mechanical properties, ensuring robust strength, toughness, and resistance to wear. The combination of these attributes makes Stainless Steel 347H flanges indispensable across diverse sectors, guaranteeing enduring functionality and longevity in the most challenging operational environments.

Stainless Steel 347H Flanges Specifications

StandardASTM A182 / ASME SA182
DimensionsANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN
StandardANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges
Size1/2″ (15 NB) to 48″ (1200NB)
Class/Pressure150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64
Flange Face TypeFlate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Stainless Steel 347H Flanges Chemical Composition

3470. – 20.0010xC – 1.109.00 – 13.0062.74 min
347H0.04 – – 19.008xC – 1.109.00 – 13.0063.72 min

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Stainless Steel 347H Flanges Mechanical Properties



Tensile Strength (MPa) minYield Strength 0.2% Proof (MPa) minElongation (% in 50mm) minHardness
Rockwell B (HR B) maxBrinell (HB) max

Top Stainless Steel 347H Flanges Manufacturing Company in Dubai

At PipingMart, we take pride in being the largest supplier and manufacturer in the UAE, offering cutting-edge solutions for all your piping needs. With state-of-the-art production plants strategically located in the UAE, we boast a vast inventory of over 25,000 tons of premium-quality materials readily available in stock.

Contact us to get a quick quote for your requirement.

We offer These Stainless Steel 347H Flanges as per DIN, ISO, JIS or ANSI Standard.

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Advantages of Stainless Steel 347H Flanges

  • High-temperature resistance: Stainless steel 347H is designed for high-temperature applications. It offers excellent resistance to high temperatures and heat stability, making it suitable for use in areas where extreme temperatures are a concern.

  • Durability and longevity: Thanks to its durable construction and resistance to various corrosion elements, the stainless steel 347H flange provides exceptional durability. It can withstand harsh operating conditions without compromising performance, reducing maintenance requirements and long-term replacement costs.

  • Stability under welded conditions: Stainless steel 347H is stabilized with niobium, which provides intergranular corrosion resistance after exposure to temperatures in the sensitivity range during welding or other heating processes. This stabilization increases weldability and ensures the integrity of the flange in the welded state.

  • Creep Resistance: Stainless steel 347H exhibits better creep resistance at higher temperatures than standard austenitic stainless steel. This property is particularly well suited for applications involving constant high temperatures, such as petrochemical and refining industries.

  • Corrosion Resistance: One of the most important advantages of stainless steel, including 347H, is its corrosion resistance. These flanges are highly corrosion-resistant from various chemicals, acids and weather, ensuring durability and reliability in harsh environments.

Types of Stainless Steel 347H Flanges

Threaded Flanges

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Stainless Steel 347H Flanges Uses

Application Industry

Stainless Steel 347H Flanges shave excellent mechanical qualities and are resistant to wear corrosion, and high temperatures, they are widely used in various industries. These flanges are widely used in the oil and gas, petrochemical, power generation, and aerospace industries. They play an important part in joining equipment, valves, and pipe systems. They are perfect for applications exposed to severe operating conditions, such as high temperatures, high pressures, and corrosive environments, because of their exceptional strength, toughness, and wear resistance.

Oil & Gas Industry

Aerospace Industry

Petro Chemical Industry

Power Generation Industry

  • Petrochemical Industry: Stainless steel 347H flanges are widely used in the petrochemical industry for piping systems, reactors, heat exchangers, and other equipment operating at high temperatures and in hot environments.

  • Power generation: Power plants, including conventional and nuclear plants, use stainless steel 347H flanges in steam turbines, boilers, heat exchangers, and other critical components. High resistance and creep of these flanges are essential to ensure reliable and efficient power generation systems.

  • Chemical applications: Stainless steel 347H flanges are used in pipes, vessels and equipment for handling volatile chemicals, solvents and acids in chemical plants. Their corrosion resistance and high-temperature stability make them ideal for maintaining system integrity and ensuring safety.

  • Maintenance Applications: Industrial applications of stainless steel 347H flanges in critical applications such as distillation columns, furnaces, and catalytic systems. These flanges withstand high temperatures and corrosive conditions during crude oil processing and processing of various petroleum products.

How to Choose the Right Stainless Steel 347H Flanges

  • Understand operational requirements: Identify operating conditions, including temperature, pressure, water/air issues, corrosion potential and other environmental factors. This information will guide you in choosing flanges with the right materials, pressure references, and corrosion resistance.

  • Flange Dimensions and Standards: Specify the flange dimensions, including thickness, face type (e.g., raised face, flat face, ring type joint), and flange class or pressure rating (e.g., ANSI/ASME B16.5, ANSI ). /ASME B16) and 47 Series A or B). Ensure compatibility with existing pipeline components and adhere to industry standards.

  • Pressure and Temperature Ratings: Consider your application’s pressure and temperature requirements. Select flanges rated to handle maximum operating pressure and temperature conditions to ensure safe and reliable operation.

  • Accessories: Ensure the stainless steel 347H is compatible with the water or air piping. The material in the flange must also meet the requirements for chemical resistance, thermal stability and corrosion resistance in the intended environment.

Are Stainless Steel 347H Flanges weldable?

Yes, stainless steel 347H flanges are weldable. They exhibit good weldability due to the presence of stabilizing elements like niobium, which prevents sensitization and intergranular corrosion during welding, ensuring integrity and performance in welded conditions.

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FAQ (Frequently Asked Questions)

Can stainless steel 347H flanges be used for underground applications?

Stainless steel 347H flanges can be used for underground applications where corrosion resistance is crucial. Their resistance to corrosion from soil, moisture, and chemicals makes them suitable for buried pipelines, drainage systems, and underground infrastructure in industries such as oil and gas, utilities, and wastewater management.

Can Stainless steel 347H flanges be recycled after use?

Yes, stainless steel 347H flanges are highly recyclable. They can be collected, melted down, and reused to produce new stainless steel products without losing their inherent properties. Recycling stainless steel reduces environmental impact, conserves resources, and contributes to a sustainable circular economy.

Can stainless steel 347H flanges be used for underground applications?

Yes, stainless steel 347H flanges are suitable for underground applications due to their corrosion resistance. They withstand exposure to moisture, soil, and underground environments, making them ideal for buried pipelines, drainage systems, and infrastructure in industries like oil and gas, utilities, and wastewater management.

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