A puddle flange is a simple yet essential fitting used in civil construction to prevent water leakage where pipes pass through concrete structures. In RCC (Reinforced Cement Concrete) slabs, these flanges act as a seal that stops water from migrating along the outer surface of a pipe. Whether you are working on water tanks, basements, lift pits, or underground pipelines, installing a puddle flange correctly ensures waterproofing and structural durability. This step-by-step guide from Udhhyog , a leading supplier of GI, MS, and SS puddle flanges in India, explains how to use a puddle flange during RCC slab construction. ๐งฐ Step-by-Step Guide ✅ Step 1: Choose the Right Puddle Flange Select a puddle flange based on the pipe size and material (MS, GI, or SS). GI puddle flanges are ideal for general drainage and water pipes. Use stainless steel for corrosive environments or coastal zones. At Udhhyog , we provide puddle flanges in custom sizes with...
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What Is a GI ERW Pipe? Types, Pricing & Industrial Applications in India
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GI ERW Pipe in India (2025): Types, Prices & Industrial Uses Explained
Meta Description: Learn what a GI ERW pipe is, its types, current 2025 prices, and top Udhhyog (industrial) applications in India. Explore brands, suppliers, and buying tips.
A GI ERW pipe is a galvanized iron pipe manufactured using Electric Resistance Welding. These pipes are corrosion-resistant, cost-effective, and ideal for construction, water transport, and industrial (Udhhyog) applications. They come in various diameters and thicknesses and are widely used across India in infrastructure and plumbing systems.
Overview: What Is a GI ERW Pipe?
GI ERW (Galvanized Iron Electric Resistance Welded) pipes are made by cold-forming steel strips into a pipe and welding them longitudinally. Post-welding, these pipes are zinc-coated (galvanized) to resist corrosion, making them perfect for water transport and outdoor applications.
Mild steel base with zinc coating
Manufactured via ERW technique
Long-lasting, strong, and economical
Used in plumbing, fencing, and Udhhyog piping
1. Types of GI ERW Pipes
Type
Description
Applications
Light GI ERW Pipe
Thin wall, lightweight
Residential plumbing, railing
Medium GI ERW Pipe
Balanced thickness and strength
Water supply, greenhouse, scaffolding
Heavy GI ERW Pipe
Thick wall, heavy-duty
Industrial pipelines, construction frames
2. GI ERW Pipe Sizes & Specifications
Diameter: ½ inch to 12 inches
Thickness: 1.2 mm to 6 mm
Length: Standard 6 meters
Coating: 40 GSM to 300 GSM zinc
Standards: IS 1239, IS 3589
3. GI ERW Pipe Price List in India (2025)
Size (Inch)
Thickness (mm)
Type
Price/Meter (INR)
Supplier Location
½"
1.2
Light
₹65–₹85
Delhi, Ludhiana, Kolkata
1"
2.0
Medium
₹90–₹120
Kanpur, Ahmedabad
2"
3.2
Heavy
₹160–₹200
Chennai, Mumbai
Note: Bulk Udhhyog buyers can negotiate rates for 1000+ meter orders.
4. Udhhyog Applications of GI ERW Pipe
GI ERW pipes are critical in Udhhyog operations due to their corrosion resistance and high tensile strength. Common uses include:
Water supply in industrial plants
Structural support in warehouses and factories
Cable conduits
Scaffolding & fencing in construction
Oil and gas pipeline supports (non-pressure lines)
5. Benefits of GI ERW Pipe for Industry
✅ Rust-resistant zinc coating
✅ Uniform strength and surface finish
✅ Easy welding and installation
✅ Available in multiple sizes
✅ Compliant with BIS standards (IS 1239, IS 3589)
Top GI ERW Pipe Manufacturers in India
Jindal (India) Ltd.
Tata Pipes
Surya Roshni Ltd.
APL Apollo
Nezone Group
Leading Suppliers & Dealers (2025)
Dealer Name
Location
Focus Segment
MetalTech Distributors
Delhi
GI ERW & ISI Pipes
Udyog Pipe House
Mumbai
Industrial GI ERW Pipes
Bharat Pipe Udyog
Ahmedabad
Construction & Udhhyog use
Buying Tips for 2025
✅ Compare coating weight (GSM) and grade
✅ Verify ISI certification
✅ Choose dealers with inventory support for urgent delivery
✅ Get quotes from TradeIndia, Justdial, IndiaMART for comparison
✅ Consider total landed cost including transport
FAQ: GI ERW Pipe
Q1. What is the full form of GI ERW Pipe? GI stands for Galvanized Iron and ERW stands for Electric Resistance Welded. Together, it means a zinc-coated steel pipe made by ERW technique.
Q2. Is GI ERW Pipe suitable for drinking water? Yes, if certified and zinc coating is within safe limits. Commonly used in municipal water systems.
Q3. What is the lifespan of a GI ERW Pipe? Generally 10–15 years depending on environment and coating quality.
Q4. How to identify a good-quality GI ERW Pipe? Check for ISI mark, uniform zinc finish, and ask for a mill test certificate.
Q5. Where to buy GI ERW Pipes in bulk? From verified Udhhyog dealers listed on Justdial, IndiaMART, and TradeIndia.
Introduction GI pipes (Galvanized Iron pipes) are a core component in plumbing, structural, and industrial systems across India. Their zinc coating provides excellent corrosion resistance, making them ideal for water supply lines, irrigation, borewells, fencing, and fabrication. But to ensure proper installation and compatibility, it's crucial to understand the standard GI pipe size chart in mm and inches , as defined by ISI standards (IS:1239 Part 1 and Part 2). This guide provides a comprehensive GI pipe size chart with nominal bore (NB), outside diameter (OD), wall thickness , and equivalent inch-mm conversions , helping buyers, engineers, and plumbers make informed choices. ๐ What is a GI Pipe? A GI pipe is a mild steel pipe that has been galvanized with a layer of zinc. The galvanization process helps prevent rust, thereby extending the pipe's lifespan. These pipes are widely used in: ๐ง Water supply and plumbing ๐ Agricultural irrigation ๐️ Structura...
Introduction MS Pipes (Mild Steel Pipes) are widely used in construction, fabrication, plumbing, and infrastructure sectors across India. As raw material prices and transportation costs fluctuate, it's crucial to stay updated with the latest MS pipe price in India for 2025 to make informed purchasing decisions. This guide covers: Latest rate chart of MS pipes (ERW, round, square, seamless) Price factors Buying tips for industries & traders ✅ Short Summary MS pipe price in India (2025) ranges from ₹90 to ₹350 per meter , depending on pipe size, thickness, shape, coating, and quality. ERW MS pipes are the most commonly used, with average rates around ₹110–₹280/m. ๐ MS Pipe Price Chart – India 2025 (Per Meter) MS Pipe Type Size (Inches) Thickness (mm) Price Range (INR) Application MS ERW Pipe 1" – 4" 2.0 – 4.0 ₹100 – ₹240 Construction, fabrication MS Round Pipe 0.5" – 6" 1.5 – 5.0 ₹90 – ₹270 Scaffolding, general plumbing MS Square Pipe ...
Looking for the latest GI pipe prices in India for 2025? Whether you're a contractor, builder, or industrial buyer, this guide provides the full GI pipe price list by size (½ inch to 50mm) , covering B Class and C Class pipes from top manufacturers like Jindal and Tata. GI pipe prices in 2025 vary from ₹75 to ₹1,450 per meter, depending on pipe size , class (B/C) , and brand . B Class is commonly used for general water lines, while C Class suits high-pressure applications. ๐งฑ What is a GI Pipe? GI (Galvanized Iron) pipes are mild steel pipes coated with zinc to prevent corrosion. They're widely used in water supply, plumbing, fire-fighting, construction, and industrial Udyog (เคเคฆ्เคฏोเค) sectors. IS Standard: Most GI pipes follow IS:1239 (Part-1) specifications. ๐ GI Pipe Price List by Size (2025) Size (NB) Outer Dia (mm) B Class Price/Mtr (₹) C Class Price/Mtr (₹) ½” (15mm) 21.3 mm ₹75 – ₹90 ₹105 – ₹120 ¾” (20mm) 26.9 mm ₹95 – ₹110 ₹130 – ₹145 1” (25mm) 33.7 mm ₹1...
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