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Steel blooms
Material
Steel grades with the chemical composition and the mechanical characteristics according to the following standards STAS 500/2-80, STAS 791-88, STAS 880-88, STAS 1350-89, STAS 8184-87, STAS 8185-88, STAS 10382-88, STAS 11500/2-89. When agreed, there can also be rolled blooms of other steel grades.

Dimensions and limit tolerances
According to STAS 436/90

Section [mm x mm] Weigh [Kg/m] Section [mm x mm] Weigh [Kg/m] Section [mm x mm] Weigh [Kg/m]

170 x 170 222,6 260 x 260 526,1 380 x 380 1123,7

180 x 180 250,1 265 x 265 546,5 275 x 275 * 593,6

200 x 200 307,9 270 x 270 567,3 230 x 350 * 631,9

220 x 200 371,6 280 x 280 610,1 260 x 320 * 653,1

230 x 230 407,0 300 x 300 700,4 265 x 320 * 665,7

240 x 240 443,9 320 x 320 796,9 265 x 340 * 707,3

250 x 250 482,3 350 x 350 953,3

*) Not Standardized dimension

Side [mm] 170 180 - 220 230 - 250 260 - 280 300 - 350 380

Limit tolerances [mm] ± 5 ± 6 ± 7 ± 8 ± 9 ± 10

Shape deviations and surface condition

Max.diference between the bloom diagonals 0,7 of the side tolerance

Burrs due to cutting max. 8 mm

Max.permissible depth of the flaws (0,5 x a/100) + 2

Max. cleaning depth for 150 < a <= 200 mm
a > 200 mm
5 % of dimension
6 % of dimension

Delivery lengths

Length types Delivery length [m] Permissible deviations [mm]

Manufacture lengths 2 - 6
-

Fixed lengths 2 - 6 + 100/- 0

Delivery state, delivery

Delivery state Delivery

Rough rolled, straightened, without heat treatment, with unpolished and not flame - cleaned surface As individual bars

Section [mm x mm]	Weigh [Kg/m]	Section [mm x mm]	Weigh [Kg/m]	Section [mm x mm]	Weigh [Kg/m]
170 x 170	222,6	260 x 260	526,1	380 x 380	1123,7
180 x 180	250,1	265 x 265	546,5	275 x 275 *	593,6
200 x 200	307,9	270 x 270	567,3	230 x 350 *	631,9
220 x 200	371,6	280 x 280	610,1	260 x 320 *	653,1
230 x 230	407,0	300 x 300	700,4	265 x 320 *	665,7
240 x 240	443,9	320 x 320	796,9	265 x 340 *	707,3
250 x 250	482,3	350 x 350	953,3

Side [mm]	170	180 - 220	230 - 250	260 - 280	300 - 350	380
Limit tolerances [mm]	± 5	± 6	± 7	± 8	± 9	± 10

Max.diference between the bloom diagonals		0,7 of the side tolerance
Burrs due to cutting		max. 8 mm
Max.permissible depth of the flaws		(0,5 x a/100) + 2
Max. cleaning depth for	150 < a <= 200 mm a > 200 mm	5 % of dimension 6 % of dimension

Length types	Delivery length [m]	Permissible deviations [mm]
Manufacture lengths	2 - 6	-
Fixed lengths	2 - 6	+ 100/- 0

Delivery state	Delivery
Rough rolled, straightened, without heat treatment, with unpolished and not flame - cleaned surface	As individual bars