Mild Steel ERW Pipes/Tubes
Circular Hollow Section
Product Summary
Mild Steel ERW Circular Hollow Sections are manufactured using the Electric Resistance Welding (ERW) process to provide high strength, durability, and uniform thickness. These pipes are known for their excellent structural integrity, smooth surface finish, and strong resistance to pressure and impact. Their circular design ensures even load distribution, making them highly suitable for various industrial, structural, and general-purpose applications.
Circular Hollow Section
Nominal bore / outer diameterNB 15 / OD 21 mm to NB 100 / OD 114 mm
Available thickness0.80 mm to 4.00 mm
Dimension tolerance±0.30 mm
Thickness tolerance±0.05 mm
Checks specific to this product.
The following controls are used for Circular Hollow Section according to the approved specification and supply condition.
Dimension Test
OD, thickness, length and shape accuracy
Weld Quality Inspection
To ensure strong and defect-free joints
Weight Test
To confirm standard section weight
UTM Test
Tensile strength, elongation, bend and flattening test, and drift expansion test
Hydro Test
To check leakage and pressure resistance
Approved product range
Size & thickness availability
Browse the available wall thicknesses for each section size. Final availability is confirmed against quantity, finish and the approved supply requirement.
Available thickness
| Nominal Bore in mm | Outer diameter in mm | Wall thickness (mm) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.80 | 1.00 | 1.20 | 1.40 | 1.60 | 1.80 | 2.00 | 2.20 | 2.50 | 3.00 | 3.20 | 3.60 | 4.00 | ||
| 15 | 21 | Not available | Available | Available | Available | Available | Available | Available | Available | Available | Not available | Not available | Not available | Not available |
| 20 | 26 | Not available | Available | Available | Available | Available | Available | Available | Available | Available | Not available | Not available | Not available | Not available |
| 25 | 33 | Available | Available | Available | Available | Available | Available | Available | Available | Available | Available | Not available | Not available | Not available |
| 32 | 42 | Available | Available | Available | Available | Available | Available | Available | Available | Available | Available | Available | Not available | Not available |
| 40 | 48 | Not available | Available | Available | Available | Available | Available | Available | Available | Available | Available | Available | Available | Not available |
| 50 | 60 | Not available | Available | Available | Available | Available | Available | Available | Available | Available | Available | Available | Available | Not available |
| 65 | 76 | Not available | Not available | Not available | Available | Available | Available | Available | Available | Available | Available | Available | Available | Not available |
| 80 | 88 | Not available | Not available | Not available | Not available | Available | Available | Available | Available | Available | Available | Available | Available | Available |
| 100 | 114 | Not available | Not available | Not available | Not available | Available | Available | Available | Available | Available | Available | Available | Available | Available |
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Nominal Bore in mm15 Outer diameter in mm21
Available wall thickness (mm)
- 1.00
- 1.20
- 1.40
- 1.60
- 1.80
- 2.00
- 2.20
- 2.50
-
Nominal Bore in mm20 Outer diameter in mm26
Available wall thickness (mm)
- 1.00
- 1.20
- 1.40
- 1.60
- 1.80
- 2.00
- 2.20
- 2.50
-
Nominal Bore in mm25 Outer diameter in mm33
Available wall thickness (mm)
- 0.80
- 1.00
- 1.20
- 1.40
- 1.60
- 1.80
- 2.00
- 2.20
- 2.50
- 3.00
-
Nominal Bore in mm32 Outer diameter in mm42
Available wall thickness (mm)
- 0.80
- 1.00
- 1.20
- 1.40
- 1.60
- 1.80
- 2.00
- 2.20
- 2.50
- 3.00
- 3.20
-
Nominal Bore in mm40 Outer diameter in mm48
Available wall thickness (mm)
- 1.00
- 1.20
- 1.40
- 1.60
- 1.80
- 2.00
- 2.20
- 2.50
- 3.00
- 3.20
- 3.60
-
Nominal Bore in mm50 Outer diameter in mm60
Available wall thickness (mm)
- 1.00
- 1.20
- 1.40
- 1.60
- 1.80
- 2.00
- 2.20
- 2.50
- 3.00
- 3.20
- 3.60
-
Nominal Bore in mm65 Outer diameter in mm76
Available wall thickness (mm)
- 1.40
- 1.60
- 1.80
- 2.00
- 2.20
- 2.50
- 3.00
- 3.20
- 3.60
-
Nominal Bore in mm80 Outer diameter in mm88
Available wall thickness (mm)
- 1.60
- 1.80
- 2.00
- 2.20
- 2.50
- 3.00
- 3.20
- 3.60
- 4.00
-
Nominal Bore in mm100 Outer diameter in mm114
Available wall thickness (mm)
- 1.60
- 1.80
- 2.00
- 2.20
- 2.50
- 3.00
- 3.20
- 3.60
- 4.00
Keep exploring
The rest of the range.
Mild Steel ERW Pipes/Tubes
Square Hollow Section
Mild Steel ERW Pipes/Tubes
Rectangular Hollow Section
Hot Dip Galvanized Iron Pipes/Tubes
Circular Hollow Section
Hot Dip Galvanized Iron Pipes/Tubes
Square Hollow Section
Hot Dip Galvanized Iron Pipes/Tubes
Rectangular Hollow Section
Other Products
SDF (Single Door Frame)
Other Products
Railing Tubes
Testing Method
Quality starts before pipe forming.
Incoming MS billets and prepared MS strips are checked before they move into the product-specific manufacturing route.
MS Billets
- Chemical analysis
- Spectrometer test
- Hardness test
- Dimension test
- Surface inspection
- Weight verification
MS Strips
- Chemical analysis
- Tensile strength
- Thickness & width check
- Surface quality inspection
- Weight verification
From material to dispatch
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