ISI 1538 GI Puddle Flanges – Sizes, Price & Application Guide | Udhhyog

 

Introduction to ISI 1538 GI Puddle Flanges

ISI 1538 GI Puddle Flanges are specialized galvanized iron flanges designed as per Indian Standard IS 1538 to provide water-tight sealing where pipes pass through concrete structures. These are essential in preventing leakage and seepage in RCC walls, basements, tanks, and underground lines.



At Udhhyog, we manufacture GI puddle flanges that meet ISI 1538 dimensional and quality standards, ensuring long life, rust protection, and dependable performance.


📐 ISI 1538 – What Does It Mean?

ISI 1538 is a standard by the Bureau of Indian Standards (BIS) that specifies technical dimensions, pressure ratings, and material quality for cast iron and fabricated flanges used in pipelines.

Udhhyog’s puddle flanges follow:

  • Type A & B flange outlines

  • Bolt circle and hole dimensions

  • Correct thickness and face alignment

  • Standard sizes for NB (Nominal Bore)

📏 Available Sizes at Udhhyog

Nominal Bore (NB)Outer Diameter (OD)Thickness (mm)Bolt Holes
50 mm165 mm10 mm4
80 mm200 mm10 mm4
100 mm220 mm12 mm8
150 mm285 mm14 mm8
200 mm340 mm16 mm8
250 mm395 mm18 mm12
300 mm445 mm20 mm12
350 mm & aboveOn requestAs requiredAs required

👉 Custom sizes, thicknesses, and collar flanges are also available at Udhhyog.

💰 GI Puddle Flange Price List (Estimated)

Size (NB)Price Range (₹/unit)
50 mm₹150 – ₹220
100 mm₹280 – ₹350
150 mm₹400 – ₹550
200 mm₹600 – ₹750
300 mm₹950 – ₹1,200
400 mm+Contact for Quote

💡 Bulk order discounts and GST invoice available. Prices may vary based on coating, thickness, and delivery location.

🛠️ Where Are GI Puddle Flanges Used?

Udhhyog’s ISI 1538 GI puddle flanges are used in:

  • 🏢 Basement & lift pits – to stop water seepage around pipe entries

  • 🚿 Water tanks & overhead reservoirs – for leak-proof inlets/outlets

  • 🏗️ Concrete sumps & RCC walls – during casting

  • 🏞️ Underground drainage lines – long-term waterproofing

  • 🧯 Firefighting & STP pipelines – strong anchoring and sealing

✅ Benefits of Udhhyog’s ISI 1538 GI Puddle Flanges

  • ✔️ Manufactured as per IS 1538 Type A/B standards

  • ✔️ Made from top-quality galvanized iron

  • ✔️ Hot-dip galvanized coating for corrosion resistance

  • ✔️ Leak-proof joint between pipe and concrete

  • ✔️ Quick availability and pan-India shipping

  • ✔️ Custom flange collar, anchor ribs, or rubber seal options

📦 Order Process & Delivery

  1. Submit your pipe size, quantity, and site location

  2. Udhhyog team shares price & lead time

  3. Invoice & dispatch within 2–5 working days

  4. Get doorstep delivery with tracking

❓ Frequently Asked Questions (FAQs)

1. What is the advantage of using ISI 1538 standard flanges?

ISI 1538 ensures uniform dimensions, safe pressure handling, and reliable fitting across different pipe systems. Udhhyog strictly follows this standard in all puddle flange models.

2. Are Udhhyog GI puddle flanges suitable for concrete casting?

Yes. Our puddle flanges are designed for embedment in concrete, ensuring perfect sealing around pipes in RCC structures.

3. Do these flanges support HDPE or PVC pipes?

Yes. Udhhyog GI puddle flanges are compatible with HDPE, PVC, DI, MS, and CI pipes when installed with proper clamping or collars.

4. What is the coating thickness of GI flanges from Udhhyog?

We apply 70–120 microns zinc layer via hot-dip galvanization, ensuring durability even in corrosive environments.

5. Can I get technical drawings for approval?

Absolutely! Udhhyog provides CAD drawings, MTCs, and pressure charts upon request.

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