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1. GI Sheet :
a. Physical properties:
1. Thickness: (0.38~0.45) mm
2. Weight of roll: ≤ 5000 kg
3. Width of roll: 900-915 mm (GI Sheet must be supplied as roll)
4. Thickness of Zinc coating ≥ 0.015 mm (each side of GI Sheet)
5. Weight of Zinc coating ≥ 0.0225 gm per sq cm
6. Weight:Sheet unit weight according to size and coating
7. The surface of the sheet/roll is smooth, clean and free from all spotsand
should have crystallized mild steel- checkered special galvanized layer
b. Chemical composition & Mechanical properties:
1. Carbon: 0.15 % Maximum
2. UTS :27~52 kg/mm2
3. Elongation: ≥ 18%
4. Bending Test with standard: ≥ 6 times bending at 90 degree angle.
5. Peeling Test: No peeling at repeated 180 degree bending
c. Packing:
1. The G I Sheet should be packed in roll will be wrapped with moisture/water proof
paper on the top of the roll to protect moisture/water. After wrapping the roll should be
covered with an extra G I Sheet and reinforced in three places with wrap (Two in two
end & in middle). The inner & outer edges of the roll should be covered with angular
sheet so that the edges of the rolled sheet should not affect for reinforcement. Than the
roll to be fastened in lengthwise in four or more places as a required to avoid the
looseness of roll.
2. The first sheet of each roll to be labeled with the following marking:
(a) Name of manufacturer (b) brand Name (c) group No. (d) dimension and weight of
each bundle (e) signature of the technical control department.
3. Galvanized roll can not be transported in any dirty carriages which carries NaCl,
Ca(OH)2 and NH4CI.
4. Galvanized roll for delivery should be painted with neutralized mineral oil.
5. A certification is to be provided along with the delivery of each lot showing -name of
manufacturer, weight, group No., dimension, results of tests and code No. of this
standard.
6. Warrantee for 01 year after acceptance of the stores.
d. 1. Country of origin: Group A Country 2. Country of manufacture: Country of Origin
3. Port of Shipment: Country of Origin.
Kg 200000
2. GI Wire :
Size: Dia 4.00±0.12 mm
Technical Requirement:
1. Tensile Strength = 30-50 kg/mm2
2. Elongation= More than 10%
3. Carbon = 0.15-0.25%
4. Wt of Zinc Coating = More than 95 gm/M2
5. There should not have any ungalvanized spot on the surface of the wire.
6. The wire should pass the torsion test
Kg 2000
sheet, iron sheet, galvanized iron sheet, gi wire
