Galvanized Iron (GI) flanges are widely used in industrial piping systems, plumbing, and water distribution networks due to their corrosion resistance, durability, and cost-effectiveness. Understanding the right GI flange type, dimensions, and price list ensures an optimal selection for various applications.
This guide covers:
Types of GI flanges and their applications
GI flange dimensions and size chart
GI flange price list for 2-inch & 4-inch sizes
GI puddle flange specifications and pricing
Why choose Udhhyog for industrial-grade GI flanges?
Types of GI Flanges
GI flanges are classified based on design, pressure rating, and functionality.
1. GI Slip-On Flange (SOF)
Slides over the pipe and is then welded.
Suitable for low to medium-pressure applications.
Common in plumbing and HVAC systems.
2. GI Weld Neck Flange (WN)
Has a long tapered hub for welding.
Ideal for high-pressure and high-temperature pipelines.
Used in water treatment plants and industrial flow lines.
3. GI Blind Flange (BL)
Seals the end of a pipeline, preventing leaks.
Used in testing, maintenance, and system shutdowns.
Common in oil & gas, chemical, and municipal water systems.
4. GI Threaded Flange (THF)
Screwed onto pipes without welding.
Best for low-pressure systems.
Used in gas pipelines and small-diameter applications.
5. GI Puddle Flange
Designed for underground pipe penetrations.
Prevents water leakage in concrete structures.
Common in basements, water tanks, and drainage systems.
GI Flange Dimensions & Size Chart
GI flanges are manufactured following IS 1538, ASME B16.5, and PN16 standards. Below is a standard GI flange dimension chart.
| Nominal Pipe Size (NPS) | Flange Outer Diameter (mm) | Bolt Hole Diameter (mm) | Number of Bolts |
|---|---|---|---|
| 2" | 150 | 19 | 4 |
| 3" | 175 | 19 | 4 |
| 4" | 230 | 19 | 8 |
| 6" | 280 | 22 | 8 |
| 100mm | 210 | 19 | 8 |
| 150mm | 280 | 22 | 8 |
GI Flange Price List (Approximate Rates in INR)
Prices vary depending on size, coating thickness, and manufacturer. Below is a general GI flange price list.
| Flange Size | Class | Price (INR/Piece) |
| 2-inch GI Flange | Class 150 | ₹300 – ₹500 |
| 3-inch GI Flange | Class 150 | ₹500 – ₹750 |
| 4-inch GI Flange | Class 150 | ₹700 – ₹1,000 |
| 6-inch GI Flange | Class 150 | ₹1,200 – ₹1,600 |
| 100mm GI Flange | PN16 | ₹900 – ₹1,400 |
| 150mm GI Flange | PN16 | ₹1,400 – ₹2,000 |
Bulk orders qualify for discounted rates from Udhhyog.
GI Puddle Flange Price List
GI puddle flanges are specialized fittings used for waterproofing applications. Below is the approximate pricing.
| Puddle Flange Size | Price (INR/Piece) |
| 2-inch | ₹400 – ₹700 |
| 3-inch | ₹600 – ₹900 |
| 4-inch | ₹800 – ₹1,200 |
| 6-inch | ₹1,500 – ₹2,200 |
| 100mm | ₹1,200 – ₹1,800 |
| 150mm | ₹1,800 – ₹2,500 |
✅ High-Quality GI Flanges – Available in various sizes and pressure ratings.
✅ Custom Manufacturing – Flanges tailored to industrial needs.
✅ Affordable Pricing – Best rates for bulk and custom orders.
✅ Trusted Supplier – Serving Delhi, Haryana, UP, and J&K.
For premium GI flanges, trust Udhhyog – your reliable supplier of industrial piping solutions.
Conclusion
GI flanges play a crucial role in industrial piping, plumbing, and waterproofing applications. Understanding flange types, sizes, and pricing ensures the best selection for durability and efficiency. Udhhyog supplies high-quality GI flanges, from 2-inch to 150mm sizes, meeting Class 150 and PN16 standards.
For competitive pricing and bulk orders, check out the Udhhyog GI Flange Price List and Catalogue.
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