Product name
G.I. CORRUGATED SHEET
 
Reference standard
ASTM 755
 
0ther containing standards
JIS G3312, IS 14236, ECCA
 
Strip thickness mm
0.20 to 1.2 0
 
Strip widths mm
900 to 1250
 
Substrate material
Zinc coating as per ASTM A 653/A 653M with steel base as per ASTM std
 
Substrate Coating mass gms/m2
Substrate coating mass class
80 to 275
Z120; Z150; Z180 and Z275 as per ASTM std
Or As mutually agreed
 
Grade designation

Gr 50/ Gr 80/CS type A, B as per ASTM std
 
Yield strength Mpa min
Tensile strength Mpa min
340 for Gr 50 & 550 for Gr 80
410 for Gr 50 & 570 for Gr 80
 
Paint type
Regular Polyester/Silicon Polyester/PVDF
 
Paint coating thickness (DFT)
Top coat 18 to 22 microns (+5 microns primer)
Back coat 5 to 8 (including primer)
 
Digital DFT meter accuracy
Accuracy +/- 2% of reading) as per ASTM A 153
 
Pencil hardness
H or Harder
 
Gloss
15-80% at 60 degrees ASTM D 523
 
Resistance to chalking QUV
ASTM D 53
1000 HRS –rating ≤4 for PVDF, 
750 HRS –rating ≤4 for others
 
Resistance to corrosion
(ASTM B 117)
500 HRS with blister density ≤2, creepage ≤2 mm.
 
Resistance to Humidity
1000 HRS blister density ≤ 2 (ASTM D 2247)
 
Resistance to color change QUV- ASTM G 53
2000 HRS (delta E ≤ 5 unit) for PVDF
1000 HRS (delta E ≤ 5 unit) for others
 
Flexibility
4 T- (ECCA) - no cracking
 
Resistance to abrasion
≤20 mg as per 100 cycles
 
Resistance to Acid/solvents
No discoloration/no blistering- ASTM D 1308
 
Product certification
All products are accompanied with MTC and packing list.
 
Quality System
ISO 9001 - 2000
 
Galvanized Plain Coil
Technical details/specifications
 
Thickness (mm)0.10 to 2.500.30 to 2.500.12 to 1.600.30 to 2.500.40 to 1.200.60 to 1.60
Width (mm)upto 1350upto 1350602,762,800,
900,1050200 to 1350100 to 1350100 to 1350
Surface Finish Regular & mim.spangle Matte with zero/min. spangle Regular Spangle Matte, Bright Finish, No spangleMatte finish, No spangleMatte, Bright finish, No spangle
Coating Mass (gms/m2)80 to 30080 to 30080 to 30020 to 8060 to 9060 to 80
GradesSoft/Lock formingEDD, DD,D, SPCEN, SPCD,SPCCRoofingEDD, DD,D, SPCEN, SPCD,SPCCSPCD, SPCCSPCEN, SPCD, SPCC