THE DIFFERENCE IS QUALITY!

Products
G.I. Pipes
  • Specification & Standards
  • According to BS 1387 : 1985
  • Special Product

G.I Pipes — Range
Outer Diameter 20.80 mm - 323 mm (1/2" - 12")
Thickness (1.6 - 5.5 mm) or (as per customers specifications)

 

G.I Pipes — Specification and Standards
British Standard BS 1387 (for galvanizing) - BS 21 (for threading)
Length 6.0 meter + 06 mm. (Customized length of 4.88 meter to 7.00 meter)
Thickness

Extra Light & Light Tubes    -8%

Medium & Heavy Tubes    -10%

Outer Diameter In accordance with BS-1387 standards
Weight One single tube -8%, +10%; Mean consignment weight ±4%
Zinc Coating Thickness 55-77 Microns
Straightness 0.2% of any length measured along the center line or on customer requirement
Packaging Bundled hexagonally by sealing metal straps and each bundle is tagged for size, thickness, weight etc. Product can be supplied with galvanized sockets.

 

Chemical Composition (Ladle) Mechanical Properties Performance Test
C
Max.
%
Mn
Max.
%
P
Max.
%
S
Max.
%
Yield
Strength
(min.)
N/mm2
Tensile
Strength
-
N/mm2
Elongation
Min.
%
Applies
Up to
DN 50
Applies
Greater
than
DN 50
0.20 1.20 0.045 0.045 195 320-460 20 MS: 180o
GI: 90o
Platens
Distance
60% of the
OD
Dimensions of G.I Pipes : Extra Light
Dimensions of Steel
Tube
Extra Light
Nominal
Size (DN)
Designation
of Thread
Outside Diameter Thickness
(mm)
Weight of Black
Tube
Hydrostatic
Test
Pressure
Threads
Per Inch
Max.
(mm)
Min.
(mm)

Plain

End

Kg. / m

Plain

End

Kg. / 6m

Bar BS 21
1985
15 1/2 21.3 20.8 1.80 0.854 5.124 50 14
20 3/4 26.6 26.1 2.00 1.201 7.206 50 14
25 1 33.5 32.8 2.30 1.752 10.512 50 11
32 1-1/4 42.2 41.6 2.30 2.246 13.476 50 11
40 1-1/2 48.1 47.5 2.60 2.898 17.388 50 11
50 2 60.2 59.3 2.60 3.660 21.96 50 11
65 2-1/2 75.7 74.9 2.90 5.177 31.062 50 11
80 3 88.4 87.6 2.90 6.086 36.516 50 11
100 4 113.5 112.6 2.20 8.668 52.008 50 11
125 5 139.0 138.0 3.60 11.975 71.85 50 11
150 6 165.0 163.0 3.60 14.239 85.434 50 11

 

Dimensions of G.I Pipes : Light
Dimensions of Steel
Tube
Light
Nominal
Size (DN)
Designation
of Thread
Outside Diameter Thickness
(mm)
Weight of Black
Tube
Hydrostatic
Test
Pressure
Threads
Per Inch
Max.
(mm)
Min.
(mm)

Plain

End

Kg. / m

Plain

End

Kg. / 6m

Bar BS 21
1985
15
1/2 21.4 21.0 2.0 0.947 5.68 50 14
20 3/4 26.9 26.4 2.3 1.38 8.28 50 14
25 1 33.8 33.2 2.6 1.98 11.88 50 11
32 1-1/4 42.5 41.9 2.6 2.54 15.24 50 11
40 1-1/2 48.4 47.8 2.9 3.23 19.38 50 11
50 2 60.2 59.6 2.9 4.08 24.48 50 11
65 2-1/2 76.0 75.2 3.2 5.71 34.26 50 11
80 3 88.7 87.9 3.2 6.72 40.32 50 11
100 4 113.9 113.0 3.6 9.75 58.50 50 11

 

Dimensions of G.I Pipes : Medium
Dimensions of Steel
Tube
Medium
Nominal
Size (DN)
Designation
of Thread
Outside Diameter Thickness
(mm)
Weight of Black
Tube
Hydrostatic
Test
Pressure
Threads
Per Inch
Max.
(mm)
Min.
(mm)

Plain

End

Kg. / m

Plain

End

Kg. / 6m

Bar BS 21
1985
15 1/2 21.7 21.1 2.6 1.21 7.26 50 14
20 3/4 27.2 26.6 2.6 1.56 9.36 50 14
25 1 34.2 33.4 3.2 2.41 14.46 50 11
32 1-1/4 42.9 42.1 3.2 3.10 18.60 50 11
40 1-1/2 48.8 48.0 3.2 3.57 21.42 50 11
50 2 60.8 59.8 3.6 5.03 30.18 50 11
65 2-1/2 76.6 75.4 3.6 6.43 38.58 50 11
80 3 89.5 88.1 4.0 8.37 50.22 50 11
100 4 114.9 113.3 4.5 12.2 73.20 50 11
125 5 140.6 138.7 5.0 16.6 99.60 50 11
150 6 166.1 164.1 5.0 19.7 118.20 50 11

 

Dimensions of G.I Pipes : Heavy
Dimensions of Steel
Tube
Heavy
Nominal
Size (DN)
Designation
of Thread
Outside Diameter Thickness
(mm)
Weight of Black
Tube
Hydrostatic
Test
Pressure
Threads
Per Inch
Max.
(mm)
Min.
(mm)

Plain

End

Kg. / m

Plain

End

Kg. / 6m

Bar BS 21
1985
15
1/2
21.7
21.1
3.2 1.44 8.64 50 14
20 3/4 27.2 26.6 3.2 1.87 11.22 50 14
25 1 34.2 33.4 4.0 2.94 17.64 50 14
32 1-1/4 42.9 42.1 4.0 3.80 22.80 50 11
40 1-1/2 48.8 48.0 4.0 4.38 26.28 50 11
50 2 60.8 59.8 4.5 6.19 37.14 50 11
65 2-1/2 76.6 75.4 4.5 7.93 47.58 50 11
80 3 89.5 88.1 5.0 10.30 61.80 50 11
100 4 114.9 113.3 5.4 14.50 87.00 50 11
125 5 140.6 138.7 5.4 17.90 107.40 50 11
150 6 166.1 164.1 5.4 21.30 127.80 50 11
Steelex Special Product
Dimensions of Steel
Tube
Steelex Special Product
Nominal
Size (DN)
Designation
of Thread
Outside Diameter Thickness
(mm)
Weight of Black
Tube
Hydrostatic
Test
Pressure
Threads
Per Inch
Max.
(mm)
Min.
(mm)

Plain

End

Kg. / m

Plain

End

Kg. / 6m

Bar BS 21
1985
15 1/2 21.3 20.8 1.60 0.77 4.60 50 14
20 3/4 26.6 26.1 1.60 0.96 5.77 50 14
25 1 33.5 32.8 1.60 1.24 7.46 50 11
25 1 33.5 32.8 2.00 1.54 9.21 50 11
32 1-1/4 42.2 41.6 1.60 1.59 9.54 50 11
32 1-1/4 42.2 41.6 2.00 1.97 11.80 50 11
40 1-1/2 48.1 47.5 1.60 1.82 10.93 50 11
40 1-1/2 48.1 47.5 2.00 2.26 13.55 50 11
50 2 60.2 59.3 1.60 2.29 13.76 50 11
50 2 60.2 59.3 2.00 2.85 17.09 50 11
50 2 60.2 59.3 4.00 5.55 33.32 50 11
65 2-1/2 75.7 74.9 1.60 2.91 17.44 50 11
65 2-1/2 75.7 74.9 2.00 3.62 21.69 50 11
65 2-1/2 75.7 74.9 2.60 4.66 27.96 50 11
65 2-1/2 75.7 74.9 4.00 7.10 42.61 50 11
80 3 88.4 87.6 2.00 4.24 25.44 50 11
80 3 88.4 87.6 2.60 5.48 32.85 50 11
80 3 88.4 87.6 3.60 7.52 45.12 50 11
80 3 88.4 87.6 4.50 9.35 56.12 50 11
100 4 113.5 112.6 2.00 5.48 32.86 50 11
100 4 113.5 112.6 2.60 7.08 42.48 50 11
100 4 113.5 112.6 4.00 10.80 64.77 50 11
100 4 113.5 112.6 4.87 13.12 78.70 50 11
125 5 139.0 138.0 2.00 6.73 40.39 50 11
125 5 139.0 138.0 2.60 8.71 52.28 50 11
125 5 139.0 138.0 3.20 10.68 64.06 50 11
125 5 139.0 138.0 4.00 13.32 79.89 50 11
125 5 139.0 138.0 4.50 14.93 89.55 50 11
150 6 165.0 163.0 2.60 10.35 62.08 50 11
150 6 165.0 163.0 3.20 12.69 76.13 50 11
150 6 165.0 163.0 4.00 15.88 95.28 50 11
150 6 165.0 163.0 4.50 17.82 106.93 50 11