If you're in the industrial, construction, or plumbing sector and need high-quality GI flanges, you know the importance of choosing the right supplier. GI (Galvanized Iron) flanges are essential for pipeline connection, known for their corrosion resistance, durability, and cost-effectiveness.
In this detailed 1500-word guide, we explore everything from GI flange specifications and applications to price trends and supplier insights—with a special spotlight on Udhhyog, a leading GI flange manufacturer and supplier in Delhi.
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What is a GI Flange?
A GI flange is a galvanized iron flange used to connect pipes, valves, pumps, and other equipment to form a pipeline system. The galvanization process provides a zinc-coated finish that protects against rust and corrosion.
🔩 Key Features:
Rust-proof coating
Sturdy mild steel base
Available in standard sizes (15mm to 300mm)
IS 1538 / PN6 / PN10 / Class 150 compliance
Applications of GI Flanges
🚿 Water pipelines and tank systems
🧯 Firefighting and sprinkler systems
🌐 Underground piping networks
🏭 Industrial construction
🌊 Sewage and drainage projects
Types of GI Flanges Available
| Type | Description | Best Use Case |
|---|---|---|
| Slip-On Flange | Pipe fits inside flange, then welded | Easy-to-install systems |
| Blind Flange | Solid flange used to close end of pipeline | Termination or future expansion provision |
| Threaded Flange | Threads allow connection without welding | Low-pressure, quick-installation setups |
| Puddle Flange | Water-sealing flange embedded in concrete | Borewell and underground construction |
All flange types at Udhhyog come with custom drill options, standard bolt hole dimensions, and can be coated with hot-dip or electro-galvanized finishes.
GI Flange Price List – Delhi Market (2024)
| Size (Inch) | NB (mm) | Type | Thickness (mm) | Weight (kg) | Price (INR/piece) |
| 1" | 25 mm | Slip-On | 14 | 1.0 | ₹75 – ₹100 |
| 2" | 50 mm | Slip-On | 16 | 1.8 | ₹110 – ₹150 |
| 3" | 80 mm | Slip-On | 18 | 3.2 | ₹180 – ₹240 |
| 4" | 100 mm | Slip-On | 20 | 4.8 | ₹270 – ₹340 |
| 6" | 150 mm | Slip-On | 22 | 7.2 | ₹420 – ₹540 |
📝 Prices may vary with coating thickness, bolt size, and bulk quantity. GST extra.
📥 Download full catalog: GI Flange Catalogue – Udhhyog
Why Udhhyog is the Best GI Flange Supplier in Delhi
🏭 In-House Manufacturing
We manufacture flanges in our Delhi facility with strict quality checks, IS compliance, and custom drill support.
🛠️ Complete Stock in All Sizes
Ready stock from ½ inch to 12 inch available in:
Slip-On
Blind
Puddle
Threaded types
🚚 Fast Delivery in North India
We ship to:
Delhi NCR
Haryana
Punjab
Uttar Pradesh
Rajasthan
Jammu & Kashmir
Himachal Pradesh
Delivery time: 1–4 days depending on location.
🔩 Customization Available
Extra-thick GI coating
Custom bolt hole drilling
Branding and embossing
💰 Best Price Guarantee
Being a direct manufacturer, we offer factory prices, bulk order discounts, and OEM supply.
GI Flange Manufacturing Process at Udhhyog
Raw Material Cutting (Mild Steel)
Machining & Drilling as per flange standards
Galvanizing (Hot-dip or electro-plated)
Quality Inspection
Marking & Packing
Client Testimonials
⭐️⭐️⭐️⭐️⭐️ “We source 4-inch GI flanges from Udhhyog regularly – strong build, accurate drilling, and fast delivery.” – Construction Contractor, Delhi
⭐️⭐️⭐️⭐️⭐️ “Their puddle flanges are the best in the market. No leaks even after 6 months underground!” – Borewell Engineer, Haryana
Ordering & Support
📞 Call Now: +91-XXXXXXXXXX
🌐 Website: https://udhhyog.com
📦 Bulk Order Support: Available
✍️ Custom Order Lead Time: 2–4 days max
Visit our Contact Page to send RFQs or get product consultation.
FAQs
Q1: What is the delivery time in Delhi?
A: Within 24–48 hours for ready stock items.
Q2: Can I request GI flanges with extra coating?
A: Yes, we offer both hot-dip and electro-galvanized options.
Q3: What sizes are available in puddle flanges?
A: 2-inch to 8-inch puddle flanges are readily available.
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