Melt Shop (100 Tons), Rolling Mills (800,000 TPY) Mesh Welding Line (Used)

Plants & Starting Dates of Operation:

Melt Shop: February 2004

Rolling Mill 1: November 2003

Rolling Mill 2: November 2006

Mesh Welding 1: September 2003

Mesh Welding 2: July 2005

Mesh Welding 3: September 2006

Melt Shop – Highlights of the Plant:

Electric Arc Furnace: 

100 t tapped steel, full platform, split shell, water cooled panels, EBT, conductive arms, electrodes  

diameter 600mm, 72 MVA transformer, 3 oxygen modules , 3 burners carbon injection, 105 tph productivity, 

annual production 609.000 tpy.

Ladle Furnace:

Active power 12 MW max., 350 mm electrode diameter.

Continuous Casting Machine:

4 strands, 7m radius, hot tundish, mould 1000mm length parabolic conic, billet size from100x100 mm to 160x160 mm, max billet length 12 m, casting speed 3,0 -3,8 m/min, productivity up to 108 tph, annual

production 600.000 tpy.

Fume Dedusting Plant:

Canopy hood, bag filter with 2 fans 450.000 m3/h each, dust collecting system.

Water Treatment Plant:

Contact and non-contact cooling circuits with cooling tower. Supplier DANIELI.

Cranes:

2X90t and 2x150t.

Scrap Handling:

2 transfer cars for scrap bucket handling.

Rolling Mill 1 – Main Characteristics:

Rolling Mill Nominal Capacity 500.000 tpy

Starting Material Billets 130x130 mm and/or 140x140 mm

Final Products:

Rounds/Deformed bars 8 – 40 mm diameter

Angles 25x3 – 50x5 mm

Channels 30x15 – 50x25 mm

Flats 30x5 – 80x30 mm

Squares 10x40 mm

Equal tees 25 -40 mm

Wire rod 5,5 – 16,0 mm

Deformed bars 8 – 20 mm diameter in 

Spools Supplier: Danieli spa

Rolling Mill 1 – Mill Configuration and Composition:

115 tph Walking Hearth Reheating Furnace

Welding machine for endless rolling

Eighteen (18) H and V alternatively arranged rolling stands, being stands  

16 and 18 Convertible (H/V) type to allow the slitting sequence of smaller  

bar sizes and the twist free rolling of one-strand rolled products

Finishing facilities for bars, sections and coils

Lubrication/hydraulic services for the above

Water treatment plant

Electrical and level1,5 automation

Four slitting for 8 and 10 mm diameter

Reheating Walking Hearth Furnace:

Type: Walking hearth, top fired, lateral and frontal burners

Nominal Output: 115 tph

Fuel: Natural Gas

Supplier: Centro Combustion

Roughing Mill:

No of Stands: six (6) cantilever type Ring Diameter: 680 and 580 mm Ring Changing: In line by crane

Intermediate Mill:

No of Stands: six (6) housingless stands

Roll diameter: 440 mm

Stand changing: off-line with quick changing table

Finishing Mill:

No of Stands: six (6) housingless stands

Roll diameter: 370 mm

Stand changing: off-line with quick changing table

Shears:

Snap Shear: at roughing mill entry side

Crop Shear: at roughing mill exit side

Crop Shear: at intermediate mill exit side

Dividing Shear: at cooling bed entry side

Loopers:

Eight (8) vertical loopers before the intermediate and finishing stands

Water Cooling Line:

Two (2) water box chambers for surface quenching and bar cooling

Product to be cooled: 8 - 40 mm  

Overall length: 21,5 m

Cooling Bed:

Bar cooling and transfer. Overall length: 78 m Overall width: 10,5 m

Multistrand Straightener:

Layer of sections straightening

Pendulum Shear:

Continuous cutting to length Head and tail cropping

Bar Counter:

Counting of bars for exact number of bars bundle forming

Single Head Magnetic Stacker:

Picking up the far layer and stack forming

Overall length: 12 m

Wire Binding Machines:

Wire binding of bar bundles and section stacks

Rolling Mill 2 – Main Characteristics:

Rolling Mill Nominal Capacity 300.000 tpy

Starting Material Billets 130x130 mm and/or 140x140 mm

Final Products:

Rounds/Deformed bars 8 – 20 mm diameter

Wire rod 5,5 – 16,0 mm in Coils

Deformed bars 8 – 20 mm diameter in

Spools Supplier: Danieli spa

Rolling Mill 2 – Mill Configuration and Composition:

80 tph Walking Hearth Reheating Furnace

Sixteen (16) H and V alternatively arranged rolling stands

Finishing block with six (6) mandrel units

Finishing facilities for bars and coils

Lubrication/hydraulic services for the above

Water treatment plant

Electrical and level1,5 automation

Reheating Walking Hearth Furnace:

Type: Walking hearth, top fired, lateral and frontal burners

Nominal Output: 80 tph

Fuel: Natural Gas

Supplier: Centro Combustion

Roughing Mill:

No of Stands: six (6) cantilever type Ring Diameter: 680 and 580 mm Ring Changing: In line by crane

Intermediate Mill:

No of Stands: six (6) cantilever type

Ring Diameter: 450 mm

Ring Changing: In line by crane

Finishing Mill:

No of Stands: four (4) housingless stands

Roll diameter: 370 mm

Stand changing: off-line with quick changing table

Shears:

Snap Shear: at roughing mill entry side

Crop Shear: at roughing mill exit side

Crop Shear: at intermediate mill exit side

Crop Shear: at fast finishing block entry side

Scrapping Shear: at the entry side of Dividing Shear

Dividing Shear: at cooling

bed entry side

Loopers:

Eight (8) vertical loopers before the intermediate and finishing stands

Water Cooling Line:

Water box chambers for surface quenching and bar cooling

Product to be cooled: 8 - 20 mm Overall length: 15.7 m

Pinch rolls:

To withdraw the rolled stock

Cooling Bed:

Bar cooling and transfer. Overall length: 78 m Overall width: 8,5 m

Cut to Length Shear:

Cutting to length Head and tail cropping

Bar Counter:

Counting of bars for exact number of bars bundle forming

Wire Binding Machines:

Wire binding of bar bundles

Rolling Mill 1+2 – WIRE ROD AREA:

Intermediate water cooling line

Pinch roll

Crop shear

Vertical looper

Finishing block with ten (10) mandrel units

Water cooling line with total overall length 35 m approx.

Four (4) pinch rolls

Laying head

Roller cooling conveyor, overall length 85 m

Coil forming station

Reel conveying roller table

Vertical coil compactor

Collecting saddles car

Sund Birsta Tying Machine

Rolling Mill 1+2 – SPOOLER LINE (double):

Diverter

Water cooling line

Pinch roll and Chopping Shear

Pinch roll and Vertical looper

Ring distributor and drum

Manipulator

Sund Birsta Tying Machines

Coil extraction

Roller table and coil evacuation

Mesh Welding Line 1:

Machine Type: EVG ATT 12/126-RV

Production of column and standard reinforcing mesh styles with line wire spacings  

of 100, 125,150 and 200 mm.

Machine works with line and cross wires off spools (cold rolled ribbed wire) and mill coils 

(hot rolled ribbed wire).

Production Data:

Max. width of mesh: 3.000 mm

Max. welding width: 2.900 mm

Max. length of mesh: 5.000 mm  

Line wire diameter: 4 - 12 mm

Line wire spacing: 100, 125, 150 and 200 mm

Max. number of line wires: 30  

Cross wire diameter: 4 - 8 mm

Cross wire spacing: min. 50 mm

Max. production speed: 125 cross wires/min

Mesh Welding Line 2:

Machine Type: EVG G95/126-RV

Production of column, special and standard reinforcing mesh styles with line wire spacing of 

100, 125 and 150 mm.

Machine works with line from bars and with cross wires off mill coils (hot rolled ribbed or plain wire).

Production Data:

Max. width of mesh: 3.000 mm

Min. width of mesh: 1.200 mm

Max. welding width: 2.900 mm

Max. length of mesh: 6.000 mm  

Line wire diameter: 6 - 12 mm

Line wire spacing: 100, 125, and 150 

Max. number of line wires: 30  

Cross wire diameter: 6 - 12 mm

Cross wire spacing: min. 50 mm

Max. production speed: 150 cross wires/min

Mesh Welding Line 3:

Machine Type: EVG G95/126-RV

Production of column, special and standard reinforcing mesh styles with line wire spacing of 

100, 125 and 150 mm.

Machine works with line from bars and with cross wires off mill coils (hot rolled ribbed or plain wire).

Production Data:

Max. width of mesh: 3.000 mm

Min. width of mesh: 1.200 mm

Max. welding width: 2.900 mm

Max. length of mesh: 7.000 mm  

Line wire diameter: 6 - 14 mm

Line wire spacing: 100, 125, and 150 

Max. number of line wires: 30  

Cross wire diameter: 6 - 12 mm

Cross wire spacing: min. 50 mm

Max. production speed: 150 cross wires/min