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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MS Puddle Flange Sizes & Price Chart for Civil Projects

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Introduction



Mild Steel (MS) puddle flanges are essential components used to prevent water leakage where pipes pass through concrete structures such as tanks, manholes, and basements. Whether you're a civil contractor, plumber, or project manager, having a clear understanding of MS puddle flange sizes and prices is crucial for budgeting and planning your construction projects in 2025.

In this post, we’ll cover standard sizes, applications, pricing trends, and how to select the right MS puddle flange for your project.

What is an MS Puddle Flange?

An MS puddle flange is a round or square metal disc welded or fixed around a pipe that is cast into concrete to create a watertight seal. It helps to block water seepage at the entry/exit points of pipes in RCC structures.

Common Applications in Civil Projects

  • RCC water tanks

  • Sewage treatment plants (STPs)

  • Drainage lines

  • Basement waterproofing

  • Concrete walls and retaining structures

  • Manholes and sumps

MS Puddle Flange Sizes Chart (Standard)

Pipe Size (NB)Outer Diameter (mm)Flange Thickness (mm)Bolt HoleApprox. Weight (kg)
50 mm (2")165841.2
80 mm (3")185841.6
100 mm (4")2001042.0
150 mm (6")2851083.2
200 mm (8")3401285.1
250 mm (10")3951286.5
300 mm (12")44515128.9

Note: Custom sizes available based on project specifications.

MS Puddle Flange Price List (2025 Estimated Rates)

Size (NB)ThicknessMaterialAvg. Price (INR/Piece)
2"8 mmMS₹200–₹300
3"8 mmMS₹250–₹350
4"10 mmMS₹350–₹500
6"10 mmMS₹600–₹800
8"12 mmMS₹900–₹1,200
10"12 mmMS₹1,200–₹1,600
12"15 mmMS₹1,800–₹2,400

Disclaimer: Prices may vary by location, quantity, and coating (e.g., anti-rust treatment). Always confirm with your local supplier.

Factors That Affect MS Puddle Flange Pricing

  • Thickness & Size: Larger sizes and heavier gauges cost more.

  • Anti-Corrosion Coating: Hot dip galvanizing or epoxy coating increases cost.

  • Quantity Ordered: Bulk orders receive better per-unit rates.

  • Brand or Fabricator: Prices differ between manufacturers.

  • Transport & GST: Local taxes and delivery costs affect final rates.

Choosing the Right MS Puddle Flange for Your Project

  1. Determine Pipe OD/NB – Always match the flange to your pipe size.

  2. Check Civil Drawing Specs – Follow RCC wall/tank thickness and design.

  3. Choose Coating Based on Application

    • Plain MS for non-corrosive environments

    • Epoxy/bitumen-coated MS for damp environments

    • Galvanized MS for underground or water-intensive use

  4. Verify Bolt Hole Pattern – Required for bolting or anchoring in some cases.

  5. Confirm Load Rating – For high-pressure areas or heavy structures.

Benefits of Using MS Puddle Flanges in Civil Construction

  • Excellent structural strength

  • Long-lasting sealing when embedded in concrete

  • Withstands vibration and external pressure

  • Suitable for high-flow pipes and RCC tanks

  • Easy to fabricate and customize for unique applications

Where to Buy MS Puddle Flanges in India

  • Online Marketplaces: IndiaMART, TradeIndia, Amazon Business

  • Direct Manufacturers: Search local steel fabricators and pipe fittings companies

  • Industrial Suppliers: Dealers in civil hardware and infrastructure equipment

  • Custom Orders: Get flanges made to your specs via CNC or lathe shops

FAQs on MS Puddle Flange Sizes and Prices

Q1. What is the most common size of MS puddle flange?
For domestic and small civil work, 100mm and 150mm are the most commonly used sizes.

Q2. Can I get custom MS puddle flange sizes?
Yes, most manufacturers offer customization based on OD, thickness, and coating needs.

Q3. What is the best coating for MS puddle flanges?
Bitumen or epoxy paint is commonly used. Galvanized MS flanges are preferred for long life.

Q4. Are MS flanges cheaper than SS puddle flanges?
Yes, MS flanges are generally 40–60% more affordable than stainless steel ones.

Q5. Can MS puddle flanges be used in sewage systems?
Yes, but they should be coated or galvanized to avoid corrosion in chemical-laden environments.

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