BSL : Cold Rolled Coils and Sheets

Rationalised sizes of CR Coils

Thickness  mm	Width  mm
0.27, 0.30, 0.35	900, 905, 910, 914, 920
0.40, 0.45	900, 905, 910, 914, 920, 1000, 1005, 1010, 1020
0.5	900, 905, 910, 914, 920, 1000, 1005, 1010, 1020, 1105, 1120
0.55, 0.58	900, 905, 910, 914, 920, 1000, 1005, 1010, 1020, 1105
0.60	900, 905, 910, 914, 920, 1000, 1005, 1010, 1020, 1100, 1105, 1120
0.63	900, 905, 910, 914, 920, 1000, 1005, 1010, 1020, 1100, 1105, 1120, 1219, 1250, 1270
0.70	900, 905, 910, 914, 920, 1000, 1005, 1010, 1020, 1105, 1219, 1250, 1270
0.8, 0.9	900, 914, 920, 1000, 1020, 1120, 1219, 1250, 1270, 1420
1.00	900, 914, 920, 1000, 1020, 1120, 1219, 1250, 1270, 1320, 1420, 1520, 1580
1.25,1.50, 1.60, 1.85	900, 914, 920, 1000, 1020, 1120, 1219, 1250, 1270, 1320, 1420, 1520, 1580, 1620
2.00	900, 914, 920, 1020, 1120, 1219, 1250, 1270, 1320, 1420, 1520, 1580, 1620
Bitumen Size
0.63	876, 896, 1120
Barrel Size
0.9	914, 920, 1225, 1320
1, 1.2, 1.25	914, 920, 1225, 1320, 1580

Coil outer diameter: 2200 mm, maximum. 
Coil internal diameter: 510 mm (for 0. 50 m and below, and for 0.63 mm for width up to 1020 mm) and 600 mm (for others). 
Coil weight: 6 -23 tonnes (as per size)
Tolerance as per IS - 513/1994
Common Grades: IS 513/ 1994 (O, D, DD & EDD), IRSM 41, SAILCOR, SAILRIM, 
HSCR - I&II.

For Specifications please click here

Bokaro Steel Plant also produces cold rolled coils and sheets to the following foreign specifications : ASTM A 568/ 366, BS-1449-Pt-1, JIS G 3141 SPCC/CD, DIN-1263 St 12.03 or equivalent, if sufficient orders are available.

Rationalised sizes of Cold Rolled Sheets

Thickness  mm	Width  mm	Length  mm
0.60, 0.63, 0.70	900, 1000, 1100, 1250	2000, 2500, 3000, 3600
0.80, 0.90	900, 1000, 1100, 1250, 1400	2000, 2500, 3000, 3600
100, 1.25, 1.50, 1.60, 1.85, 2.00	900, 1000, 1100, 1250, 1400, 1500	2000, 2500, 3000, 3600
Barrel Size
1.0, 1.25	915, 920	1815
1.0,1.25	1315, 1320	1970, 2000

Common Grades: IS 513/ 1994, IRSM 41, SAILCOR
CR coils/sheets are supplied in oiled condition as per customers' requirements.

Tolerance as per IS - 513/ 1994.

Packaging: CR Coils
Coils are first packed with paper and high-density polythene and then secured with steel strapping. A coil is strapped with three eye and two circumferential straps. For identification, one sticker and one metallic tag with a sticker are provided. These are then loaded into wagons with the eye of the coil in horizontal position. Straps again unitise them.

Packaging: CR Sheets
These are packed in packets of 3 - 10 tonnes each and covered with high density polythene and paper. Thereafter, these are bound with steel straps. They also have stickers inside the packets and metal tags attached to the strips.

Tolerances as per IS 513/ 1994
Tolerance on Thickness of Sheets

          Tolerance on Width of Sheets