G.I CORRUGATED SHEETS

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

Galvanized Plain Sheet

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

Cut to Length (mm)upto 4500upto 4500upto 4500upto 4500upto 4500upto 4500

Surface FinishRegular & mim.spangleMatte with zero/min. spangleRegular SpangleMatte, 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