Expanding Flange

Teshi Fittings, a premier manufacturer of pipe fittings, offers high-quality Expanding Flanges designed for various industries including Petroleum, Chemical, Hydraulic, Food, and more. Crafted with meticulous precision and adherence to international quality standards, our Expanding Flanges provide reliable solutions for joining and expanding piping systems. With a commitment to excellence and customer satisfaction, Teshi Fittings delivers superior performance and durability in every flange, providing tailored solutions to meet specific project requirements. Experience the difference with Teshi Fittings’ Expanding Flanges and trust in our expertise for all your piping needs.

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Standard Specification of Expanding Flange

DimensionsANSI B16.5, ANSI B16.47 Series A & B, ASA, API-605, MSS SP44, AWWA, Custom Drawings
Size1/2″ (15 NB) to 48″ (1200NB)
Flange Face Types / Connection TypeFlat Face Flange (FF), Raised Face Flange (RF), Ring Joint Flange (RTJ), Lap Joint Flange, Male and Female Flange (M&F), Large and Small Tongue-and-Groove Flange (T&G)
DINDIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673
BSBS4504 , BS4504, BS1560, BS10
Class150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.
Class / Pressure Rating150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.

Manufacturing process and features of Expanding Flange

Manufacturing Process:

  • Material Selection : Choose suitable materials based on the application requirements, such as carbon steel, stainless steel, or alloy steel.
  • Cutting : Cut the raw material to the required size using cutting machines or torches.
  • Forming the Flange : Expand the diameter of the flange using specialized equipment to achieve the desired size and shape.
  • Machining : Machine the expanded flange to precise dimensions and smooth surfaces using CNC machines.
  • Drilling : Drill bolt holes according to standards like ANSI B16.5 or customer specifications for accurate alignment.
  • Heat Treatment : Apply heat treatment processes like annealing or tempering to improve mechanical properties and relieve internal stresses.
  • Surface Finishing : Perform surface treatments such as polishing or coating to enhance corrosion resistance and improve aesthetics.
  • Inspection and Testing : Conduct rigorous inspection and testing, including dimensional checks and non-destructive testing (NDT) methods like ultrasonic testing, to ensure quality and reliability.
  • Marking and Packaging : Mark the flange with relevant information such as material grade, size, pressure rating, and standards compliance. Then, carefully package the flanges to protect them during transportation.

Features of Expanding Flange :

  • Versatile Connection : Enables connections between pipes of different diameters, expanding the piping system’s versatility.
  • Enhanced Flow Capacity : Smooth transition from a smaller to a larger diameter helps improve flow capacity in pipelines.
  • Leak-Free Performance :Provides a secure and leak-free connection, essential for critical applications.
  • High Pressure and Temperature Resistance : Designed to withstand high pressures and temperatures, suitable for demanding industrial environments.
  • Durable Construction : Made from robust materials to ensure long-term reliability and durability.
  • Precision Engineering : Engineered to precise tolerances to ensure proper fit and alignment in piping systems.
  • Corrosion Resistance : Available in materials with excellent corrosion resistance properties to extend service life in corrosive environments.
  • Customizability : Can be manufactured in various sizes, materials, and pressure ratings to meet specific application requirements.
  • Standards Compliance : Manufactured in accordance with international standards (e.g., ANSI, ASME, ASTM) to ensure quality and reliability.
  • Ease of Installation : Designed for ease of installation and maintenance, reducing downtime and operational disruptions.

Expanding flanges are essential components in piping systems, providing versatile and reliable connections between pipes of different diameters. They are designed and manufactured with precision to ensure durability, high performance, and compatibility with various industrial applications.

Application Of Expanding Flange

Oil and GasUsed in pipelines and refineries where transitions between larger and smaller pipes are necessary for efficient fluid flow.
Chemical IndustryEnables connections in chemical plants where different pipe sizes are required to handle various chemical substances.
Power GenerationFound in power plants for connecting different sections of piping systems, ensuring efficient flow of water, steam, or other fluids
Water TreatmentUsed in water treatment facilities to connect pipes of different diameters, ensuring smooth and efficient water flow.
Pulp and Paper IndustryFacilitates transitions in pipelines within paper mills and pulp processing facilities, where varying pipe sizes are common.
Food and Beverage ProcessingEnables smooth transitions in piping systems used for processing and transporting food and beverage products.
Pharmaceutical IndustryUsed in pharmaceutical manufacturing facilities to connect pipes of varying diameters while maintaining sterile conditions.
Mining and Mineral ProcessingFacilitates connections in pipelines used for transporting minerals and ores in mining operations.
Construction and InfrastructureFound in building HVAC (heating, ventilation, and air conditioning) systems and municipal infrastructure projects for efficient fluid distribution.
Shipbuilding and Marine ApplicationsUsed in shipbuilding for piping systems where different pipe sizes need to be connected to ensure efficient operation at sea.
Structural PipesProviding stable and secure junctions, essential for structural integrity in complex piping systems.

Expanding Flange Available Types

Expander FlangeStainless Steel Expansion Flange
Stainless Steel Expander FlangeForged Steel Raised Face Expander Flange
Carbon Steel Expander FlangeANSI B16.47 Expander Flange
Alloy Steel Expander FlangeClass 150 LBS Expander Flange Stockiests
Nickel Alloy Expander Flange SuppliersMSS SP44 Expander Flange
Inconel Expander FlangeClass 300 LBS Expander Flange
Alloy Steel Expander FlangeClass 600 LBS Expander Flange
Duplex Steel Expander FlangeDIN / EN Expander Flange Manufacturers
Titanium Alloy Expander FlangeASME / ANSI B16.5 Expander Weld Neck Flange
Super Duplex Steel Expander Weld Neck FlangeANSI / ASME Expander Flange
Copper Nickel Expander FlangeHigh Quality Expander Flange Exporters

Others Products

Frequently Asked Questions

Most frequent questions and answers

An expanding flange, also known as an expansion flange, is a type of flange designed to accommodate changes in pipe size or to provide a transition between pipes of different diameters. It typically features a larger diameter on one side and a smaller diameter on the other, allowing it to connect pipes with varying dimensions and facilitating expansion or contraction in the piping system.

Expanding flanges are available in a range of sizes to match different pipe diameters. They are designed to accommodate transitions between various pipe sizes, with standard sizes typically covering a wide range of diameters. Custom sizes and specifications can also be manufactured to meet specific needs.

Expanding flanges are installed by aligning the flange with the pipes to be connected, ensuring that the larger and smaller diameters are properly matched. They are then bolted onto the pipes using bolts and gaskets to create a secure, leak-proof connection. Proper alignment and tightening are crucial for a reliable seal.

Yes, we offer custom manufacturing solutions for expanding flanges to meet specific requirements. Please contact us with your detailed specifications, and we will work with you to produce flanges tailored to your needs.

The lead time for expanding flanges depends on the complexity and volume of the order. After reviewing your specifications, we will provide an estimated lead time. We are committed to delivering all projects on schedule while maintaining the highest quality standards.

Yes, expanding flanges can be used for both liquid and gas applications, provided they are made from appropriate materials and installed correctly to handle the specific conditions of the system, including pressure and temperature.

Expanding flanges are made from various materials, including carbon steel, stainless steel, alloy steel, and other metals. The material choice depends on the application’s requirements, such as the type of fluid or gas, temperature, pressure, and environmental conditions.

Expanding flanges are used in various industries, including oil and gas, petrochemical, water treatment, and construction. They are essential for connecting pipes of different sizes, facilitating expansion or contraction in piping systems, and accommodating changes in pipe dimensions.

Expanding flanges are manufactured to comply with various industry standards, such as ASME B16.5, ASME B16.47, and API standards. These standards define the dimensions, tolerances, and material requirements to ensure compatibility and reliability in piping systems.

Expanding flanges offer several advantages, including:

  • Flexibility: Allows for transitions between pipes of different sizes.
  • Ease of installation: Facilitates the connection of pipes with varying dimensions.
  • High strength and durability: Made from robust materials to handle high-pressure and temperature conditions.
  • Compliance with standards: Ensures quality and reliability in piping systems.

Regular inspection of expanding flanges involves checking for leaks and ensuring that the flange remains securely bolted. It is important to inspect for any signs of corrosion, wear, or damage that could affect the integrity of the seal.