IS 1239 Pipe Specifications

The specifications of IS 1239 pipe, including standard, thickness and finishes, are listed in the table given below.

Parameter Value
Standard IS 1239 (Part 1): 2004
Material Mild Steel (Low Carbon Steel)
Size Range 6 mm to 150 mm NB
OD Range 10.3 mm to 168.3 mm
Wall Thickness 1.8 mm to 5.4 mm (varies by class)
Classes A (Light), B (Medium), C (Heavy)
Form ERW
End Type Plain, Screwed (BSP per IS 554), Socketed
Finish Black / Hot-Dip Galvanised

IS 1239 Pipe Sizes & Weight Chart

The IS 1239 pipe chart below shows pipe thickness and weight for key sizes.

IS 1239 Pipe Size & Weight Chart: Class A (Light)

Class A pipes are available from 15 mm to 100 mm NB.

NB (mm) OD (mm) Thk (mm) Wt (kg/m)
15 21.3 2.00 0.95
25 33.7 2.65 1.98
50 60.3 2.90 4.08
100 114.3 3.65 9.75

IS 1239 Pipe Size & Weight Chart: Class B (Medium)

It's the most common class, covering 15 mm to 150 mm NB.

NB (mm) OD (mm) Thk (mm) Wt (kg/m)
15 21.3 2.65 1.22
25 33.7 3.25 2.41
50 60.3 3.65 5.03
100 114.3 4.50 12.2
150 168.3 4.85 18.9

IS 1239 Pipe Size & Weight Chart: Class C (Heavy)

Class C has the thickest wall.

NB (mm) OD (mm) Thk (mm) Wt (kg/m)
15 21.3 3.25 1.45
25 33.7 4.05 2.93
50 60.3 4.50 6.19
100 114.3 5.40 14.5
150 168.3 5.40 21.3

IS 1239 Pipe Price

The IS 1239 Black MS pipes range from INR 45 to 70 per kg; GI pipes from INR 55 to 85 per kg. Internationally, the pipe ranges from $0.60 to $0.90 USD/kg. The final price depends on class, size, finish, and quantity. Contact us for a current price list.

IS 1239 Pipe Chemical Composition

The chemical composition of IS 1239 pipe, along with its proportion, is listed in the table given below.

Carbon C
0.20% max
Manganese Mn
1.30% max
Sulphur S
0.050% max
Phosphorus P
0.045% max

IS 1239 Pipe Mechanical Properties

The mechanical properties of IS 1239 pipe, including tensile strength and elongation is listed in the table below.

320
MPa
Tensile Strength (min.)
20
%
Elongation (min.)
Property Value
Tensile Strength (min.) 320 MPa
Elongation (min.) 20%
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IS 1239 Pipe Classes & Finish

IS 1239 pipes have three classes and two finish types (black MS, galvanised GI).

IS 1239 Pipe Classification by Wall Thickness

Class A: Light Duty IS 1239 Pipes

Class B: Medium Duty IS 1239 Pipes

Class C: Heavy Duty IS 1239 Pipes

Finishes of IS 1239 Pipes

IS 1239 Black Pipes (MS Pipes)

IS 1239 GI Pipes (Galvanised Pipes)

IS 1239 Pipe Industrial Applications

IS 1239 pipes serve these 5 primary high-performing applications. They provide durability and superior corrosion resistance.

Water Supply & Plumbing

IS 1239 galvanised iron pipes in Classes B and C are commonly used as the standard choice for water mains and plumbing risers.

Gas Distribution

Gas distribution systems typically employ IS 1239 medium-class pipes fitted with BSP threads compliant with IS 554 specifications.

Fire Protection Systems

For fire protection systems, sprinkler mains and hydrant risers typically demand heavy-duty IS 1239 Class C pipes for safe operation.

Scaffolding & Construction

IS 1239 Class B scaffolding pipes are designed to match standard scaffolding couplers, offering an outer diameter of 48.3 mm.

HVAC & Industrial Piping

For HVAC and industrial services, compressed air lines and steam condensate pipelines are commonly designed using IS 1239 ERW steel pipes.

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Shipping & Packaging

Main export packaging setup Heavy-duty wooden boxes Packing
Export Packaging Standard

We strictly follow seaworthy export handling standards to protect IS 1239 pipes from transit damage, moisture ingress, and surface contamination during long-distance dispatch.

  • Heavy-duty wooden boxes with moisture barrier lining
  • HDPE stretch film wrapping on all bundles
  • Plastic end caps on threaded and plain-end pipes
  • Silica gel desiccants to minimize moisture exposure
  • ISPM-15 fumigated wooden packaging for export
shipping preparation Pipe Bundle Yard Staging
Shipping packaging Container End-Cap Protection
Shipping stock Wrapped Export-Ready Bundles

We Export Worldwide

Sachiya Steel International supplies Mild Steel Products to major industrial markets across North America, Europe, the Middle East, Asia and Africa with export-ready documentation and logistics support.

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Frequently Asked Questions

What is the IS 1239 Pipe standard?+
IS 1239 (Part 1): 2004 is a BIS specification for mild steel tubes covering water, gas, air, and steam piping from 6 mm to 150 mm NB. MS pipe IS code 1239 is the most referenced Indian piping standard.
What is IS 1239 Pipe price per kg?+
The IS 1239 Black MS pipes range from INR 45 to 70 per kg; GI pipes from INR 55 to 85 per kg. Internationally, the pipe ranges from $0.60 to $0.90 USD/kg. The final price depends on class, size, finish, and quantity. Contact us for a current price list.
What is the difference between IS 1239 and IS 1161 Pipes?+
IS 1239 covers tubes for fluid conveyance (water, gas, steam). IS 1161 covers tubes for structural load-bearing purposes.
What is the difference between IS 1239 and IS 3589 Pipes?+
IS 1239 covers pipes up to 150 mm (6 inch) NB. IS 3589 covers larger diameters above 150 mm NB.
What is IS 1239 Class C Pipe thickness?+
Class C thickness ranges from 3.25 mm at 15 mm NB to 5.40 mm at 150 mm NB, the highest among all classes.
What are the Classes of IS 1239 Pipes (A, B, C)?+
There are three wall-thickness grades: Class A (Light) for low-pressure use, Class B (Medium) for standard piping, and Class C (Heavy) for high-pressure and fire protection.
Is IS 1239 Pipe equivalent to ASTM A53?+
IS 1239 (Part 1) is broadly equivalent to ASTM A53 / A53M, BS 1387, and EN 10255.
What is the weight of IS 1239 Pipes per metre?+
A 50 mm NB pipe weighs 4.08 kg/m (Class A), 5.03 kg/m (Class B), and 6.19 kg/m (Class C). Formula: Weight (kg/m) = (OD - WT) x WT x 0.02466.

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