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| Thickness |
: |
0.10 – 2.50 mm
(material in ≤ 0.80 mm thickness can also be supplied in hard temper ) |
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| Thickness Tolerance |
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| 0.10 – 0.25 mm |
: |
± 15 microns (spread of 30 microns) |
| > 0.25 – 0.50 mm |
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± 20 microns ( spread of 40 microns) |
| ≥ 0.50 – 1.0 mm |
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± 30 microns (spread of 60 microns) |
| > 1.0 mm thickness |
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± 2.5 % of thickness or 100 microns |
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(whichever is higher ) |
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| Width |
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| Full width |
: |
760 - 1250 mm |
| Full width tolerance |
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+5/ - 0 mm |
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| Slit width |
: |
50 – 1240 mm |
| Slit width tolerance |
: |
+ 0.50/ - 0.50 mm ( spread pf 1.0 mm) |
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| Length |
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| Length tolerance |
: |
500 – 4000 mm |
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| Standard sheets |
: |
+ 10/- 0 mm (spread of 10 mm) |
| Blanks |
: |
± 1 mm (spread of 2 mm) |
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| Coating |
: |
90 – 275 gsm |
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| Edge Condition |
: |
Trimmed / mill edge |
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| Edge condition tolerance |
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| Edge wavy coils |
: |
4 mm, 3 waves/ meter |
| Edge wavy sheets |
: |
5 mm, 2 waves/ meter |
| Edge camber |
: |
2 mm max. in 2 mtr length |
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| Other Tolerances |
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| Buckling |
: |
5 mm 2 nos. per meter |
| Bow |
: |
10 mm max. |
| Diagonal difference |
: |
5 mm max. |
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| Temper -1 |
: |
Soft / hard |
| Temper -2 |
: |
Stretch leveled/ non stretch leveled/ skin passed |
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| Stretch leveling |
: |
0.23 -2.50 mm thickness |
| Skin passed |
: |
0.30 – 2.50 mm thickness (soft only) |
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| Surface roughness |
: |
0.60 -2.0 microns (after skin passed) |
| Surface finish |
: |
Bright/ matte (regular/ small/ big/ suppressed spangles) |
| Surface treatment |
: |
Chromated/ un-chromated & oiled |
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| Oiling |
: |
100 mg/ m2 to 1000 mg/ m2 each side |
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| Monogram |
: |
On line logo can be given |
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| Coil ID |
: |
508 mm |
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| Coil winding |
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| For soft coils |
: |
Controlled staggered (± 10 mm)/
Straight wound ≥0.40 mm |
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| For hard coils |
: |
Controlled staggered (± 15 mm) |
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| Coil Weight |
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| Thickness |
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| <0.25 mm |
: |
2.0 – 6.0 t |
| >0.25 – 0.50 |
: |
2.0 – 8.5 t |
| >0.50 – 2.50 |
: |
5.0 – 22 t |
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| Packet Weight |
: |
1.50 -4.50 t (max) |
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| Standards |
: |
IS 277, JIS G 3302, ASTM A653, AS 1397,
EN 10142, EN 10147, DIN 17162 and ES C.D7.001 |
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| Grades |
: |
Full hard, CQ,D/DD/LFQ & Structural |
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| Lock forming quality |
: |
Guaranteed only up to thickness 1.25 mm |
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| Non fluting quality |
: |
As per specification
2” mandrel thick > 0.35 mm
3” mandrel thick > 0.30 to _< 0.35 mm
5” mandrel thick _< 0.30 mm |
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| Hardness |
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|
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| Hard |
: |
90 (± 5 HRB) (up to 0.80 mm) |
| Soft |
: |
60 (± 5 HRB) (0.23 – 2.50 mm) |
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| Identification & Making |
: |
Bar code sticker/ metal sticker |
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| Galvanised Corrugated Sheets |
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| Thickness |
: |
0.10 -0.80 mm |
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| Width |
: |
665/ 720/ 740/ 760/ 780/ 800/ 875/ 1065 mm |
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|
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| Length |
: |
1829 - 4877 mm
(Max corrugation length of 4877 mm
can be supplied in thickness 0.22 - 0.65 mm) |
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| Temper – 1 |
: |
Hard/ soft |
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| Temper - 2 |
: |
Stretch leveled/ non stretch leveled |
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| Stretch leveling |
: |
0.60 - 0.80 mm thick (soft) |
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| Non stretch leveling |
: |
0.10 - 0.75 mm thick (hard) |
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| Surface finish |
: |
Regular/ small and big spangles |
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| Zinc coating |
: |
90 - 275 gsm |
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| Packet weight |
: |
1 - 4.5t (max) |
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| Corrugation |
: |
As per specification |
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| Specification |
|
IS 277, JIS G 3316, Ethiopian ES
C.D7.001, or equivalent. |
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| Grade |
: |
Roofing (full hard ) |
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| Hardness |
: |
90 (± 5 HRB) ( up to 0.75 mm ) hard
60 (± 5 HRB) ( 0.60 – 0.80 mm ) soft |
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| Identification & Marking |
: |
Bar code sticker/ metal sticker |
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| Note : Dimensional tolerances same as galvanised plain sheets. |
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