BSP: Semis
Rationalised
sizes of Blooms, Billets and Slabs
|
Item
|
Size
mm
|
Sectional Weight
kg/m
|
Mill
|
|
Blooms
|
150 x 150
|
172.00
|
BBM
|
|
260 x 300
|
585.00
|
BBLM
|
|
280 x 285
|
581.00
|
BBLM
|
|
295 x 320
|
700.00
|
BBLM
|
|
300 x 325
|
730.00
|
BBLM
|
|
300 x 335
|
765.00
|
BCCS
|
|
310 x 340
|
770.00
|
BBLM
|
|
320 x 320
|
735.00
|
BBLM
|
|
Billets
|
60 x 60*
|
28.00
|
BMM
|
|
90 x 90
|
60.70
|
BBM
|
|
100 x 100
|
76.20
|
BBM
|
|
110 x 110
|
92.00
|
BBM
|
|
Slabs
|
200 x 1250
|
1942.00
|
BCCS
|
|
200 x 1300
|
2020.80
|
BCCS
|
|
200 x 1500
|
2355.00
|
BCCS
|
|
250 x 1500
|
2943.75
|
BCCS
|
|
320 x 1500
|
3768.00
|
BCCS
|
* Rounded corners
square
|
Abbreviation used
|
BCCS
|
Bhilai Continuous Casting
Shop
|
|
|
BBLM:
|
Bhilai Blooming Mill
|
|
|
BBM:
|
Bhilai Billet Mill
|
|
|
BMM:
|
Bhilai Merchant Mill
|
Common grades:
IS 2830/1992, IS 2831/1975, SAE 1070,
EN 8, EN 9, SAILTower, SAILMA, 20 Mn Cr 5, IS 1875/1992.
For
Chemical Composition click here
Tolerance
|
|
Product
|
Width across Flat mm
|
Thickness
mm
|
Tolerance
mm
|
|
IS:2830/ 1992
|
Billets
|
Up to 75
Over 75
|
-
-
|
± 1.5
± 3
|
|
|
Blooms
|
Up to 150
Over 150
|
-
-
|
+ 4.0, - 3.0
+ 6.0, -3.0
|
|
|
Slabs
|
-
Up to 300
Over 300
|
Over 150
Up to 150
|
+ 3.0, - 4.0
+ 3.0, - 6.0
+ 5.0, -10.00
|
Applications
|
Specification
|
Application
|
|
IS 2830/1992
IS 2831/1975
|
For rolling into structurals
for load bearing purposes
|
|
SAE 1070
|
For manufacture of tractor discs
|
|
EN 8, EN 9
IS 1875/1992
|
For forging purposes
|
|
SAILTower
|
For rolling into structurals
for TLT segment
|
|
SAILMA 350
|
For rolling into high tensile
structurals
|
|
20 Mn Cr 5
|
Case hardening steel for automobile
gear manufacturing
|
|
SWR-14
|
For rolling into Wire Rods
|
|
SAIL HCR
|
For rolling into high corrosion
resistant rebars
|
|
