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Galvanised Products |
 Sizes
Thickness: |
0.5 to 1.5mm |
Width: |
700 to 1500mm |
Lengths: |
1.5 to 4 meters |
| Zn deposition |
120 to 850gm/m2 |
| Pack weight |
Upto -- 5 - 10MT |
Coil inner dia: |
500mm |
Coil outer dia: |
100mm to 1300mm |
Weight |
5 tons |
Specification Of Galvanised Steel Flat Products Grades
Steel
Quality |
Steel
Grade |
Chemical
Composition (Cast Analysis) % |
Mechanical
Properties |
Ref
Standard |
C
Max |
Mn
Max |
Si
Max |
P
Max |
S
Max |
Al
Min |
Yield
Stress
Min.
(N/mm2) |
Tensile
Strength
Max.
(N/mm2) |
Elong'n
%
Min.
Lo=50
mm |
180
Bend
Mandrel
Dia. |
| Commercial |
G-01 |
0.15 |
0.60 |
- |
0.05 |
0.05 |
- |
- |
- |
- |
1a |
ISO
3575-76 |
Lock
Form |
G-02 |
0.12 |
0.60 |
- |
0.04 |
0.04 |
- |
- |
- |
- |
0a |
-do- |
Drawing |
G-03 |
0.12 |
0.5 |
- |
0.04 |
0.04 |
- |
- |
430 |
24 |
- |
-do- |
G-04 |
0.10 |
0.45 |
- |
0.03 |
0.03 |
- |
- |
410 |
26 |
- |
-do- |
|
G-05 |
0.08 |
0.45 |
- |
0.03 |
0.03 |
- |
- |
410 |
29 |
- |
-do- |
|
Structural
|
G-220 |
0.25 |
1.70 |
- |
0.05 |
0.05 |
- |
220 |
320
min |
20 |
1a |
ISO
4998-77 |
G-250 |
0.25 |
1.70 |
- |
0.05 |
0.05 |
- |
250 |
350
min |
18 |
1a |
-do- |
G-280 |
0.25 |
1.70 |
- |
0.05 |
0.05 |
- |
280 |
390
min |
18 |
2a |
-do- |
G-320 |
0.25 |
1.70 |
- |
0.05 |
0.05 |
- |
320 |
430
min |
16 |
3a |
-do- |
1. Other steel grades can be produced against specific orders.
2. 1 Kgf/mm2 = 9.80665 (N/mm2) MPa
Lo = gauge length of test piece in mm
a = Thickness of bend piece
Standard Sizes Of Galvanised Coils As Rolled(Trimmed) Edges
| Thickness, mm
|
0.5, 0.6, 0.8, 1.0, 1.2, 1.5 |
| Width, mm |
(915), 950, (1220), 1250 |
| Coil weight |
5 tons |
Standard Sizes Of Galvanised Sheets As Rolled(Trimmed) Edges
| Thickness, mm |
0.5, 0.6, 0.8, 1.0, 1.2, 1.5 |
| Width, mm |
(915), 950, (1220), 1250 |
| Length, mm |
1830 to 2440 |
| Packet weight |
10 tons |
Thickness Tolerances For GP Coils & Cut Lengths(values in mm)
Specified Widths |
Thickness tolerances, over and under for specified thickness |
0.5 upto &
Including
0.8 |
Over 0.6
Upto &
Including
0.8 |
Over 0.8
Upto &
Including
1.0 |
Over 1.0
Upto &
Including
1.2 |
Over 1.2
Upto &
Including
1.5 |
Upto and
including 1200 |
±0.09 |
±0.10 |
±0.11 |
±0.13 |
±0.15 |
Over 1200 upto
and including 1500
|
±0.10 |
±0.11 |
±0.12 |
±0.14 |
±0.16 |
Thickness is measured at any point on the sheet not less than 40mm from a side edge.
NOTE: The tolerance for grade 320 will be increased by 25% applying normal rounding off procedures.
 USES
Automobiles
Roofing
Shuttering
Panelling
Manufacture of buckets, utensils, cans, containers
Desert coolers, Air conditioners, Water coolers
Fresh water tanks, etc
Domestic appliances
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