Rolling Mill
For the rolling mill and the downstream facilities shown below, SSIT can provide process design, supply complete set of equipment, construction supervision, project consultancy, technical services and undertake projects on a turnkey basis.
1. Various bar rolling lines
| Arrangement of mills |
Continuous rolling line
over 10 nos. alternatively arranged H-V mills for rolling line |
| Types of mills |
Houseless, high rigidity, short stress path |
| Production capacity |
200,000-800,000 TPA |
| Specification |
Φ8-32mm rebars,Φ12-40mm bar Product could be TMT treated as request |
2. High speed wire rod line
| Arrangement of mills |
Continuous rolling line
Alternatively arranged H-V mills for rough/intermediate mills
Top 45°crossing high speed mills for pre-finishing train and finishing train |
| Rolling speed |
Max 105 m/s |
| Weight of a coil |
1-2.5 t |
| Production Capacity |
400,000-700,000TPA |
3. HR lines for narrow strips
| Arrangement for narrow strip rolling mill |
Semi-continuous rolling:
One reversing edging Mill,
One reversing 2-Hi horizontal mill for rough rolling
Continuous rolling:
One Nos. edging Mill, six-seven stand continuous 4-Hi mill for finish rolling |
| Specification |
thickness: 1.5-8mm
width: 150-350mm strip coil |
| Weight of coil |
Max. 3t |
| Rolling Capacity |
300,000-400,000TPA |
4. HR line for middle width strip
| Arrangement of mills |
Semi-continuous rolling:
One reversing edging mill, one 2-Hi reversing mill for rough rolling. continuous rolling:
One edging Mill, two 2-Hi(or 4-Hi)Horizontal mills, one edging mill, two 2-Hi(or 4-Hi) horizontal mill, for rough rolling;
One edging mill, six-seven finishing mill for finish rolling |
| Specification |
thickness 1.5-8mm
width:350-1100mm
Weight of strip coil: Max. 8t |
| Rolling Capacity |
400,000-1,000,000 TPA |
5. HR lines for wide strips
Arrangement of mills
| ASP line |
Walking beam reheating furnace, one edging mill, one 4-Hi reversing roughing mill for rough rolling, six-seven 4-Hi continuous finishing mill (with hydraulic AGC) for finish rolling; Laminar flow cooling; two nos. coilers. |
| CSP line |
Thin slab continuous casting, tunnel furnace, six-seven stand 4-Hi continuous mill (with hydraulic AGC); Laminar flow cooling; 2 Nos. coilers. |
| Specification |
Strip coil with thickness of 1.2-25mm
Width of 1200-2150mm
Weight of strip coil: Max. 30t |
| Rolling capacity |
Max. 500,000 t |
6．HR lines for medium-wide plate
| Main equipment |
Two-three nos. walking beam reheating furnace, one-two stand 4-Hi mills, hot straightener, walking cooling bed, end cropping shear, side shear, slitting shear, cut-to-length shear, heat treatment line, cold straightener. |
| Specification |
Thickness: 5-150(400) mm
Width: 900-5200 mm
Length: 6000-12000 mm |
| Rolling capacity |
400,000-2,000,000 TPA |
7．Push-pickling line（PPL）
| Strip thickness |
1.2-4.5mm |
| Strip width |
500-1300mm |
| Coil weight |
Max.25t |
| Line speed |
Max.120m/min |
| Capacity |
400,000tons/year |
| Continuous Pickling Line |
Strip thickness: 1.2-4.5mm |
| Strip width |
500-1530mm |
| Coil weight |
Max. 30tons |
| Line speed |
300m/min |
| Capacity |
800,000tons/year |
8. Acid Regeneration Plant
| WPL(waste pickled acid) entering the plant |
3000-6000 l/h. |
| Regenerated acid total HCl-content |
approx. 190 - 210 g/l (bound + free) |
| Fe-concentration |
approx. 5 g/l approx. 5 g/l |
9. Reversible Cold Rolling Mill
| Entry thickness |
1.80-4.0mm |
| Exit thickness |
0.18-2.0mm |
| Strip width |
700/1600mm |
| Rolling speed |
1000mm/min |
| Max coil weight |
29t |
10. Continuous Hot-dip galvanizing Line(CGL)
| Material |
CQ,DQ,DDQ sheet |
| Width |
300-1250mm |
| Coating type |
GI, GL(Galvalume) |
| Coating weight |
both sides coating 80-300g/m2 |
| Thickness |
0.3(+zinc)-2mm(Max) |
| Line speed |
50-180m/min |
11. Color Coating Line（CCL）
| Raw material |
CR plate or galvanized sheet |
| Thickness |
0.15-1.5mm |
| Width |
300-1550mm |
| Line speed |
20-100m/min |
| Thickness of dry film |
8-15μm |
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