Steel plate, sheet, strips and flats IS 1730 :1989

ISPL - Indian stranded plates

Thickness - 5 mm to 80 mm
Size          - 900 X 2200 X 63 mm to 2500 X 13,500 X 25 mm (W * L * T)

ISSH - Indian stranded sheets 

Thickness  - 0.40 mm to 4.65 mm
Size           - 1800 X 600 X 0.40 mm to  4000 X 1500 X 4.65 mm (W * L * T)

ISST - Indian stranded strips 

Thickness  -  1.6 mm to 10 mm
Size           - 100 X 1.6 mm to 1550 X 10 mm

ISF - Indian stranded flats

Thickness  -  3 mm to 50 mm
Size           - 10 mm to 400 mm

For more details : https://law.resource.org/pub/in/bis/S03/is.1730.1989.pdf

Thank you..
The grace of the Lord Jesus be with God's people.