GP Coil Sheets
Galvanised steel sheets are used primarily in areas where steel is exposed to water, high levels of moisture & high humidity. Galvanising the sheets makes it resistant to rust hence GP sheets are used to manufacture ice boxes, bathroom doors, buckets, water tanks etc.
Rationalised sizes of Galvanised Plain Coils
| Thickness (mm) |
Width (mm) |
| 0.35, 0.4, 0.45 |
900, 1000 |
| 0.5, 0.55, 0.6 |
900, 1000, 1100 |
| 0.63, 0.7, 0.8, 1.0, 1.25, 1.4, 1.6 |
900, 1000, 1100, 1200, 1220 |
Rationalised sizes of Galvanised Plain Sheets
| Thickness (mm) |
Width (mm) |
Length (mm) |
| 0.35, 0.4, 0.45 |
900, 1000 |
2500, 3000 |
| 0.5, 0.55, 0.6 |
900, 1000, 1100 |
2500, 3000 |
| 0.63, 0.7, 0.8, 1.0, 1.25, 1.4, 1.6 |
900, 1000, 1100, 1200, 1220 |
2500, 3000 |
Width 1250mm can be supplies on mutual agreement
Rationalised sizes of Galvanised Corrugated Sheets
| Thickness (mm) |
Width (mm) |
Length (mm) |
| 0.35, 0.4, 0.45, 0.5,
0.55, 0.6, 0.63, 0.7,
0.8, 1.0, 1.25, 1.4, 1.6 |
800 |
2500, 3000, 360 |
GP Coil and Sheets in 0.35 mm can be supplies by mutual agreement
Rationalised sizes of Galvanised Plain Sheets
| Thickness (mm) |
Width (mm) |
Length (mm) |
| 1.25, 1.0, 0.8, 0.63, 0.5, |
900,1000 |
2500 |
| 0.4, 0.35 |
900 |
2500 |
Rationalised sizes of Galvanised Corrugated Sheets
| Thickness (mm) |
Width (mm) |
Length (mm) |
| 1.25(18), 1.00(20), 0.8(22), 0.63(24), 0.50(26) |
810, 910
|
2500, 3000, 3600 |
Packet Weight of GP/GC Sheets
| Plant |
Gp Sheets |
GC Sheets |
| Bokaro Steel Plant (BSL) |
5-11 tonnes |
5-11 tonnes |
| Rourkela Steel Plant (RSP) |
3-10 tonnes |
3-9 tonnes |
Various Zinc coatings available from BSL and RSP, as per specification is: 277/2003 (with revision I of 2008) are as follows
| Class of coating |
Zinx wt g/m2 |
Plant |
| CL II |
450 |
RSP |
| CL III |
350 |
RSP |
| CL IV |
275 |
RSP / BSL |
| CL V |
220 |
RSP / BSL |
| CL VI |
200 |
RSP / BSL |
| CL VII |
180 |
RSP / BSL |
| CL VIII |
120 |
RSP / BSL |
| CL IX |
100 |
RSP / BSL |
| CL X |
80 |
RSP / BSL |
Mechanical Properties
GP Sheets and coils available from BSL, Conforming to meechanical properties
requirements as per IS 277:2003 are as follows:
| Sl No. |
Quality |
Yiled Stress Re Mpa |
Tensile Strength Rm, Mpa |
| i) |
GP |
Ordinary |
- |
- |
| ii) |
GPH |
Ordinary - Hard |
400,min- |
- |
| iii) |
GC |
Corrugated Ordinary |
- |
- |
| iv) |
GPL |
Drawing (Lock Forming) |
350, Max |
450, Max |
