GI Puddle Flange: What It Is, How It Works & Top Suppliers in India

1. What Is a Puddle Flange?

A puddle flange is a circular ring or collar installed around a pipe that passes through a concrete wall or floor slab. It is designed to prevent water from seeping along the outer surface of the pipe and entering the structure.

Key Functions:

• Creates a watertight seal between the pipe and surrounding concrete
• Prevents leakages through floor slabs and walls
• Used in both horizontal and vertical pipe penetrations

2. What Is a GI Puddle Flange?

GI Puddle Flange stands for Galvanized Iron Puddle Flange. It’s made of iron and coated with zinc to prevent rusting and enhance durability in wet environments.

Features of GI Puddle Flange:

• Galvanized to prevent corrosion
• Compatible with PVC, HDPE, and MS pipes
• Suitable for underground and submerged installations
• Available in various diameters and pressure ratings

3. Why Use Puddle Flanges in Construction?

Puddle flanges are indispensable in any construction project involving waterproof concrete structures. They ensure no capillary action or water migration occurs along the pipe route.

Common Use Cases:

• Basement drainage
• Water treatment plants
• Firefighting pipelines
• Retaining walls
• Roof drain systems

4. Materials Used in Puddle Flanges

5. Puddle Flange Sizes and Types

Puddle flanges come in a variety of sizes, typically ranging from 50mm to 600mm and beyond. Custom sizes can also be fabricated depending on the pipe diameter and slab thickness.

Types:

• Plain GI puddle flange
• MS puddle flange with epoxy coating
• SS puddle flange for high-grade applications
• Flexible rubber puddle flange (used with PVC/HDPE pipes)

6. Installation of GI Puddle Flange

Installation must be done during concreting to ensure full integration. The flange should be positioned midway through the slab/wall with full bonding to concrete on all sides.

Installation Steps:

• Place the puddle flange around the pipe
• Seal the interface with mastic or sealant
• Embed fully within concrete (ensure no movement during pour)
• Apply waterproofing around the pipe as needed

7. Puddle Flange Supplier in India

Looking for a reliable puddle flange supplier in India?

Here are some trusted names:

• Udhhyog – Delhi-based supplier of GI and MS puddle flanges
• AquaSeal India – Known for quality and fast delivery
• Techno Pipe & Fittings – Offers GI and SS flanges
• Pipe Dream Pvt Ltd – Custom flange fabrication for all pipe types

8. Puddle Flange Manufacturer in India

When quality and customization matter, go straight to the manufacturer.

Top Puddle Flange Manufacturers:

• Udhhyog – ISO-certified GI puddle flange manufacturer
• Aqua-Tech Industries – Offers CNC precision flanges
• Unitech Projects – Specializes in fire-fighting & waterproofing flanges
• FlowSeal Pvt Ltd – Bulk manufacturer for civil contractors

9. How to Choose the Right Puddle Flange

• Material compatibility (GI for corrosive environments)
• Size & wall thickness of the pipe
• Concrete depth where flange is to be embedded
• Project application (roof, tank, basement)
• Delivery time & warranty

10. FAQs

Q1: What is the use of a puddle flange?
A: To prevent water from leaking along the outside of pipes passing through concrete structures.

Q2: Where are GI puddle flanges used?
A: In water supply, drainage, basements, tanks, and underground piping systems.

Q3: Who are the top puddle flange suppliers in India?
A: Udhhyog, AquaSeal, Techno Pipe & Pipe Dream are leading names.

Q4: What is the difference between GI and SS puddle flanges?
A: GI is zinc-coated iron, economical and corrosion-resistant. SS is stronger and used in highly corrosive conditions.

Q5: Can puddle flanges be customized?
A: Yes, most manufacturers offer custom diameters, thicknesses, and coatings based on your project needs.