IS 1239 Part 1 Light Gauge / Grade Mild Steel Pipes

IS 1239 Part 1 covers light gauge mild steel pipe dimensions and other requirements for low pressure piping. Ferrobend is a Mumbai based stockist and supplier of IS 1239 part 1 light gauge / grade mild steel pipes in Jindal / MSL / Tata / SAIL / ISMT and Swastik brand. IS 1239 Part 1 Pipes must be manufactured by one of the following process.

  • Hot Finished Seamless (HFS)
  • Cold Finished Seamless (CFS)
  • Hot Finished Welded (HFW)
  • Electric resistance welded or high frequency induction welded (ERW or HFIW)
Note: Tubes made by manual welding are not covered by this specification.

Dimensions and Weight Chart of Light Grade Pipes

Nominal Bore
mm 		Outside Diameter Thickness
mm 		Mass of Tube
Maximum
mm 		Minimum
mm 		Plain End
kg/m 		Screw & Socketed
kg/m
6 10.1 9.7 1.8 0.360 0.363
8 13.6 13.2 1.8 0.515 0.519
10 17.1 16.7 1.8 0.670 0.676
15 21.4 21.0 2.0 0.947 0.956
20 26.9 26.4 2.3 1.38 1.39
25 33.8 33.2 2.6 1.98 2.00
32 42.5 41.9 2.6 2.54 2.57
40 48.4 47.8 2.9 3.23 3.27
50 60.2 59.6 2.9 4.08 4.15
65 76.0 75.2 3.2 5.71 5.83
80 88.7 87.9 3.2 6.72 6.89
100 113.9 113.0 3.6 9.75 10.0

Chemical Composition (Laddle Analysis)

Elements Laddle Analysis (%), Max Variation Over (%), Max
Carbon 0.20 0.02
Manganese 1.30 0.04
Sulphur 0.04 0.005
Phosphorus 0.04 0.005

Other Dimension Class