How to Use a Puddle Flange in RCC Slab Construction – Step-by-Step Guide

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  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. ๐Ÿงฐ 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 Puddle Flange? GI Types, Pipe Integration & Supplier Details

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Understanding Puddle Flanges in Pipe Systems A puddle flange is a sealing ring or collar that ensures leak-proof pipe penetration through concrete structures like water tanks, basements, or underground ducts. GI (Galvanized Iron) puddle flanges are widely used for their corrosion resistance and affordability, particularly in civil construction and udhhyog applications.

GI Puddle Flange Types

  1. Welded GI Puddle Flange

    • Welded directly to pipe

    • Used in high-pressure and underground setups

  2. Threaded GI Puddle Flange

    • Easy installation

    • Ideal for water tanks and plumbing

  3. Custom Fabricated Puddle Flanges

    • Sizes and hole patterns as per design

    • Best for commercial udhhyog and infrastructure projects

Standard Sizes & Specs

Size (mm)Thickness (mm)Bolt Hole Diameter (mm)Type
80518Welded GI
100620Threaded GI
150822Custom

GI Puddle Flange Price List – May 2025

Size (mm)Price/Unit (INR)TypeCoating Type
80₹180 – ₹250WeldedZinc galvanized
100₹250 – ₹350ThreadedHot-dip galvanized
150₹400 – ₹550CustomZinc/hot-dip combo

Key Applications in Udhhyog and Infrastructure

  • Water tanks and overhead reservoirs

  • Pipe penetration through RCC walls

  • Sewage treatment plants

  • Commercial basements and tunnels

  • Industrial units (udhhyog pipelines & drains)

Benefits of GI Puddle Flanges

  • Rust-proof and weather-resistant

  • Prevents water seepage through pipe openings

  • Compatible with MS, SS, and GI pipes

  • Supports long-term structural sealing

Top GI Puddle Flange Manufacturers & Suppliers in India

Supplier NameLocationSpecialtyVerified
FlowSeal EngineeringDelhi NCRIndustrial GI puddle flanges✅
Techno Metal IndustriesMumbaiWater tank & RCC wall flanges✅
Bharat Piping SolutionsAhmedabadFabricated and customized solutions✅
Udyog Pipe SystemsFaridabadUdhhyog-grade flange and GI connectors✅

How to Choose the Right Puddle Flange

  • Identify RCC wall thickness and pipe diameter

  • Choose flange type: Welded for pressure, Threaded for plumbing

  • Verify with IS:1538 or ASTM A105 standards

Service Coverage Across India

  • Metro Cities: Delhi, Mumbai, Bengaluru, Chennai

  • Industrial Belts: Bhiwadi, Faridabad, Rajkot, Pune

  • Project Sites: Dams, Sewage Units, Udhhyog Parks

FAQs

What is a puddle flange used for? It seals pipe entries through concrete structures to prevent leakage, especially in water tanks and underground ducts.

What is the price of GI puddle flange in India? It ranges from ₹180 to ₹550 depending on size, thickness, and coating type.

Which suppliers are best for construction-grade puddle flanges? Manufacturers like Udhhyog Pipe Systems and Techno Metal Industries offer high-quality, corrosion-resistant GI puddle flanges.

Is a puddle flange needed for all RCC tanks? Yes, especially when pipes pass through tanks, walls, or floors to ensure a leakproof connection.

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