A flange is a critical mechanical component used for connecting, sealing, and supporting various piping and structural systems. It is widely used in plumbing, industrial pipelines, construction, and mechanical engineering to ensure strong and leak-proof connections.
This guide covers:
What is a flange used for?
Different types of flanges
Flange applications in engineering and plumbing
Flange materials and dimensions
How Udhhyog provides premium-quality flange solutions
What is a Flange Used For?
Flanges serve as connectors, reinforcements, and sealing components in various industries. Some key uses include:
✅ Connecting Pipes: Used in oil & gas pipelines, water supply systems, and industrial plants.
✅ Sealing Joints: Prevents leaks in plumbing and mechanical connections.
✅ Structural Support: Reinforces beams, columns, and mechanical structures.
✅ HVAC & Plumbing Systems: Essential in heating, ventilation, and drainage systems.
✅ Chemical Processing: Used in high-pressure and high-temperature chemical transport systems.
Types of Flanges
Flanges come in various types depending on their applications and industry needs.
1. Pipe Flanges
Used in industrial piping, gas transmission, and water distribution systems. Common types include:
Weld Neck Flange (WN): Provides high-strength welded connections, ideal for high-pressure applications.
Slip-On Flange (SOF): Slides over the pipe and welded for easy installation.
Blind Flange (BL): Used to close pipe ends, perfect for maintenance and testing.
Threaded Flange (THF): Screws onto pipes without welding, suitable for low-pressure use.
Lap Joint Flange (LJF): Used with a stub end, allowing for easy rotation and alignment.
2. Structural Flanges
Used in engineering and construction, flanges provide stability and strength to structures.
Beam Flanges: Reinforce I-beams and H-beams for load-bearing applications.
Plate Flanges: Used in machine assembly and industrial equipment.
3. Plumbing & Sanitary Flanges
Toilet Flanges: Connect toilets to drainpipes for a leak-proof installation.
PVC Flanges: Lightweight and corrosion-resistant, used in water and drainage systems.
4. Flanges in Special Applications
Breast Pump Flanges: Medical-grade flanges ensuring a comfortable and efficient milk extraction process.
Vacuum Flanges: Used in scientific and industrial vacuum systems.
Flange Applications in Engineering & Plumbing
Flanges are used in various industries to ensure safe and efficient operations.
1. Oil & Gas Industry
Used to connect and seal pipelines in refineries and drilling rigs.
Withstand high pressure and extreme temperatures.
2. Water Treatment & Plumbing Systems
Found in water supply networks, drainage systems, and plumbing fixtures.
Prevents leaks and ensures long-term durability.
3. Construction & Infrastructure
Reinforces bridges, tunnels, and structural steel frameworks.
Provides stability to beams and columns.
4. Power Plants & HVAC Systems
Used in steam pipelines, cooling systems, and industrial heating networks.
Helps in temperature and pressure regulation.
5. Chemical & Pharmaceutical Industry
Enables safe transportation of chemicals and corrosive fluids.
Resistant to corrosion and chemical exposure.
Flange Dimensions & Materials
Flanges are available in various standard dimensions, often following ASME, ANSI, and IS specifications. Below is a sample dimension chart for pipe flanges.
| Nominal Pipe Size (NPS) | Flange Diameter (mm) | Bolt Hole Diameter (mm) | Number of Bolts |
|---|---|---|---|
| 1/2" | 90 | 15 | 4 |
| 1" | 125 | 19 | 4 |
| 2" | 150 | 19 | 4 |
| 4" | 230 | 19 | 8 |
| 6" | 280 | 22 | 8 |
| 8" | 345 | 22 | 8 |
| 10" | 405 | 25 | 12 |
Flanges are made from various materials, including:
✅ Mild Steel (MS): Cost-effective and strong.
✅ Stainless Steel (SS): Highly corrosion-resistant.
✅ Brass: Common in plumbing applications.
✅ PVC: Lightweight and resistant to chemicals.
✅ Silicone: Used in medical applications like breast pumps.
Why Choose Udhhyog for Flanges?
✅ High-Quality Industrial Fittings – Pipe, toilet, beam, and PVC flanges available.
✅ Precision Engineering – Ensures accurate dimensions and durability.
✅ Competitive Pricing – Affordable rates for bulk and custom orders.
✅ Trusted by Professionals – Serving Delhi, Haryana, UP, and J&K.
For top-quality flanges, trust Udhhyog – your reliable industrial supplier.
Conclusion
Flanges are essential components in plumbing, construction, mechanical, and industrial applications. Selecting the right flange type and material ensures efficiency, durability, and leak-proof connections. Udhhyog provides industry-leading flange solutions, from pipe flanges to medical-grade breast pump flanges.
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