KOSTO


	Murray & Roberts Group
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	Murray & Roberts Steel
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	BRC Mesh Reinforcing
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	CISCO
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	Freyssinet Posten
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	Reinforcing Steel Contractors
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	RSC International Trading
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	Specialist Equipment Manufacturers

Capabilities

REINFORCING BAR

R-BAR: SMOOTH ROUND REINFORCING ROUND BARS IN LENGTHS AND BUNDLED
Purpose	Concrete reinforcement, commercial and manufacturing
Packing	Secured with high tensile steel strapping at evenly spread intervals
Bundle weight	±1 000kg on shorter lengths and ±2 000kg on longer lengths
Bar lengths	9m – other lengths on application
Rolling tolerances specification	To the applicable steel specification tolerance table
Diameters	Kg/m	Standard steel grades
6.0mm (straightened from coil)	0.222	BS 4449 / MS10: grade 250
8.0mm (rolled straight or straightened from coil)	0.395	SANS 920 grade 250
10.0mm (rolled straight or straightened from coil)	0.617	BS 4449 grade 250
12.0mm	0.888	Other grades on application
16.0mm	1.580
20.0mm	2.470
25.0mm	3.850
32.0mm	6.310

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Y-BAR: DEFORMED REINFORCING ROUND BARS IN LENGTHS AND BUNDLED
Purpose	Concrete reinforcement
Packing	Secured with high tensile steel strapping at evenly spread intervals
Bundle weight	±1 000kg on shorter lengths and ±2 000kg on longer lengths
Bar lengths	6m / 12m / 13m – other lengths on application
Rolling tolerances specification	To the applicable steel specification tolerance table
Deformation and marking	According to the applicable steel specification
Diameters	Kg/m	Standard steel grades
6.0mm (straightened from coil)	0.222	BS 4449 / MS10: grade 250
8.0mm (rolled straight or straightened from coil)	0.395	BS 4449 / MS10: grade 460
10.0mm (rolled straight or straightened from coil)	0.617	BS 4449 / MS10: grade 460
12.0mm	0.888	BS 4449 / MS10: grade 460
16.0mm	1.580	BS 4449 / MS10: grade 460
20.0mm	2.470	BS 4449 / MS10: grade 460
25.0mm	3.850	BS 4449 / MS10: grade 460
32.0mm	6.310	BS 4449 / MS10: grade 460
40.0mm	9.869	BS 4449 / MS10: grade 460

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SQUARE BARS IN LENGTHS AND BUNDLED
Purpose	Commercial and manufacturing
Packing	Secured with high tensile steel strapping at evenly spread intervals
Bundle weight	±1 000kg on shorter lengths and ±2 000kg on longer lengths
Bar lengths	6m - other lengths on application
Rolling tolerances specification	To the applicable steel specification tolerance table
Diameters	Kg/m	Standard steel grades
10mm x 10mm	0.770	Mild steel commercial grade
12mm x 12mm	1.116	Other grades on application

BILLET

BILLET FOR RE-ROLLING IN LENGTHS UNBUNDLED
Purpose	Re-rolling
Packing	9 x 6m billets securely wire tied
Bundle weight	Approximately 6mt (with 9 x 6m billets tied together)
Bar lengths	6m - other lengths on application
Rolling tolerances specification	To the applicable steel specification tolerance table
Diameters	Kg/m	Standard steel grades
120.0 x 120.0mm	114.5	SANS 920 grade 450
		Other grades on application

STEELMAKING PROCESS

The billets are rectangular pieces of steel 120mm x 120mm and 4.5m to 6m long.

The billets are sent to the rolling mill for rolling. Before the billets can be rolled, it has to be heated up to 1 280°C inside the reheating furnace. The billets are then sent to the rolling mill where they are rolled into rebar. The range of rebar that can be rolled is 8mm to 32mm.

The rolled rebar is cooled down and cut to length. Commercial lengths range from 13m to 6m and the stock length is 9m. The rebar is then piled into either 1t or 2t bundles which are strapped and tagged before being placed into the stock yard. A quality management system is implemented and monitors the steel throughout the manufacturing process.