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 ERW Pipe Explained: Applications, Thickness & Market Demand

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Introduction: What Is an MS ERW Pipe?

MS ERW (Mild Steel Electric Resistance Welded) pipes are manufactured using low-carbon steel sheets welded longitudinally through high-frequency electric resistance. These pipes are cost-effective, easy to fabricate, and suitable for structural and industrial use.

In 2025, the demand for MS ERW pipes continues to rise in Udhhyog sectors, infrastructure projects, and fabrication industries across India.

How Are MS ERW Pipes Made?

ERW pipes are produced through the following process:

  1. Cold-formed MS coil is shaped into a cylindrical tube.

  2. Electric resistance welding fuses the edges without using filler material.

  3. Pipes are cut, sized, tested, and treated (galvanized/painted) as per use.

This process makes them smooth, strong, and ideal for custom lengths and thicknesses.

MS ERW Pipe Thickness Chart (Common Range)

Nominal Bore (NB)OD (mm)Wall Thickness (mm)Weight (kg/m)
15 NB (1/2”)21.32.0 – 3.21.1 – 1.5
25 NB (1”)33.42.3 – 4.02.1 – 3.4
50 NB (2”)60.32.9 – 5.04.8 – 7.5
100 NB (4”)114.33.2 – 6.010.8 – 17.3
150 NB (6”)168.34.0 – 7.120.2 – 32.0

Standard lengths: 6 meters (can be custom cut).

Applications of MS ERW Pipes in Udyog & Industry

IndustryApplication
ConstructionScaffolding, structural supports, piping
Water Supply SystemsPlumbing, irrigation piping
Fabrication UnitsFrames, racks, machinery
AgricultureBorewell casing, fencing pipes
AutomotiveExhaust systems, roll cages
Industrial PlantsSteam, air, water, and oil line piping

๐Ÿ”ง Also used in:

  • Power plants

  • Infrastructure (bridges, airports)

  • Prefabricated buildings

Advantages of Using MS ERW Pipes

  • ✅ High dimensional accuracy

  • ✅ Uniform wall thickness

  • ✅ Corrosion resistance (with GI coating)

  • ✅ Cost-effective vs seamless pipes

  • ✅ Ideal for light-to-medium pressure applications

2025 Market Demand for MS ERW Pipes

๐Ÿ“ˆ Market Trends

  • 40% rise in demand from infrastructure & road projects

  • MS ERW pipe exports to the Middle East & Africa increasing

  • Government schemes (PM Gati Shakti, Smart Cities) pushing structural pipe usage

๐Ÿ’ก Top Sectors Driving Growth

  • Construction

  • Pre-engineered buildings (PEB)

  • Industrial Udyog units (chemical, oil, cement)

MS ERW Pipe Price Range in 2025 (India)

SizeThicknessPrice per kg (₹)Price per meter (₹)
25 NB2.3 mm₹62 – ₹68₹145 – ₹165
50 NB3.2 mm₹64 – ₹72₹270 – ₹320
100 NB4.5 mm₹66 – ₹74₹550 – ₹650

Prices may vary based on region, coating, and bulk quantity.

ERW vs Seamless Pipe – Quick Comparison

FeatureMS ERW PipeSeamless Pipe
WeldingLongitudinal weldedNo weld
CostEconomicalCostlier
Pressure HandlingMediumHigh
Fabrication EaseHighModerate
Best ForStructural & water pipingHigh-pressure industrial lines

FAQs – MS ERW Pipe 2025

Q1. What is the full form of ERW?

Ans: ERW stands for Electric Resistance Welded.

Q2. Are MS ERW pipes good for underground use?

Ans: Yes, with galvanized coating or wrapping, MS ERW pipes are suitable for underground applications like water supply.

Q3. What are the standard lengths of ERW pipes?

Ans: Generally 6 meters, but they can be cut-to-size on request.

Q4. What is the pressure rating of MS ERW pipe?

Ans: Suitable for medium-pressure applications; for high pressure, seamless pipes are preferred.

Q5. Which coating is recommended for MS ERW pipes?

Ans: GI (Galvanized Iron) or epoxy painting is used for corrosion resistance.

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