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. 🧰 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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Top Puddle Flanges for Drainage & RCC Applications in Industrial Udyog

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 Explore the best puddle flanges for RCC and drainage pipe applications. Learn types, materials, prices, and industrial (Udyog) uses to ensure leak-proof and durable construction.

🔍 Introduction: Why Puddle Flanges Matter in Udyog & RCC Projects

In industrial Udyog environments, ensuring a leak-proof seal where pipes pass through concrete (RCC) structures is vital for longevity and safety. That's where puddle flanges come in. From drainage to chemical containment, puddle flanges prevent water or gas seepage through concrete interfaces.

This blog highlights the top puddle flanges for drainage and RCC applications, including types, materials, and industrial advantages.

🧱 What is a Puddle Flange?

A puddle flange is a sealing ring installed around a pipe where it penetrates concrete walls or slabs. It ensures watertight integrity between the pipe and concrete, especially in wet or underground environments.

🏭 Industrial Udyog Applications of Puddle Flanges

Common RCC & Industrial Use-Cases:

  • Drainage lines under factory floors

  • Pipe penetrations in concrete tanks

  • Chemical containment pits

  • Pump houses & sumps

  • Fire-fighting pipeline risers

  • STP (Sewage Treatment Plant) and ETP (Effluent Treatment Plant) infrastructure

🏆 Top Puddle Flange Types for RCC & Drainage

Puddle Flange TypeMaterialIdeal ForFeatures
SS Puddle FlangeStainless SteelChemical & wastewater tanksRust-proof, durable, hygienic
GI Puddle FlangeGalvanized IronStormwater and underground drainsEconomical, moderate corrosion resistance
HDPE Puddle FlangeHigh-Density PolySewerage, lightweight RCC structuresNon-reactive, low-cost
MS Puddle FlangeMild SteelGeneral RCC slabs & factory constructionStrong & affordable
Rubber Coated FlangeRubber Coated MSVibration-sensitive or corrosive areasShock-resistant, chemical resistant

✅ Key Features to Look for in RCC/Drainage Puddle Flanges

  • High bonding grip for concrete sealing

  • Pressure-resistance (5 to 10 bar)

  • Rust & chemical resistance

  • Easy installation during slab casting

  • Range of sizes (2" to 16"+)

💰 Price Range of Industrial Puddle Flanges in India (2025)

Size (inches)SS Puddle FlangeGI Puddle FlangeHDPE Puddle Flange
2”₹250 – ₹450₹150 – ₹280₹100 – ₹180
4”₹400 – ₹700₹250 – ₹450₹180 – ₹300
6”₹600 – ₹950₹400 – ₹650₹250 – ₹400
8”₹900 – ₹1500₹600 – ₹950₹350 – ₹500
10”+₹1400 onwards₹950 onwards₹500 onwards

📌 Note: Prices vary by brand, quality, and location (e.g., Faridabad, Ludhiana, or Gujarat industrial zones).

🧰 Installation Tip for RCC Applications

"Install puddle flanges during concreting, not afterward. This ensures the concrete bonds tightly around the flange to create a leak-proof seal."

🛠 Top Brands & Suppliers (India/Udyog Sector)

  • Jindal (SS/HDPE)

  • Zoloto Engineering

  • Aquatech Puddle Flanges

  • Ashirvad Piping Systems

  • Local Udyog MSME Fabricators in Punjab, Gujarat, Haryana, and Maharashtra

💼 Who Uses These in Udyog?

  • Civil Contractors for RCC foundations

  • Drainage line installers

  • Water tank & STP builders

  • Udyog engineers in chemical plants

  • Factory EPC companies

📈 Why Udyog & Industrial Projects Prefer Puddle Flanges

  • ✔️ Stops water leakage into basements

  • ✔️ Prevents chemical seepage

  • ✔️ Reduces maintenance costs

  • ✔️ Increases RCC lifespan

  • ✔️ Ensures safety in industrial zones

📦 Puddle Flange Sizing Guide (Drainage & RCC)

Pipe Size (NB)Outer Dia (mm)Flange ThicknessBolt Holes
50mm (2")160–2005–10 mm4–6
100mm (4")220–2606–12 mm6–8
150mm (6")280–3408–12 mm8–10
200mm (8")340–42010–15 mm10–12

❓ FAQ Section

Q1. Can puddle flanges be used in existing RCC structures?
No, they are designed for installation during concreting. Retrofitting reduces effectiveness.

Q2. What’s the best flange for drainage in chemical plants?
Stainless Steel puddle flanges are preferred due to high corrosion resistance.

Q3. How long do puddle flanges last in drainage systems?
They can last 20+ years when correctly installed with quality material.

Q4. Can HDPE puddle flanges handle pressure?
Yes, for low-to-medium pressure systems. Use SS or MS for high-pressure needs.

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