This equipment is a second-hand 12-Hi 1400mm cold rolling mill , originally manufactured by Wuxi Qiaolian Metallurgical Equipment Co., Ltd. in 2009. The mill is designed for processing hot-rolled steel coils into high-precision cold-rolled strips with excellent surface quality and thickness tolerance. It adopts a 12-roller configuration, which provides superior rigidity and allows rolling of harder materials with minimal deflection. The mill is equipped with an AGC (Automatic Gauge Control) hydraulic screw-down system for real-time thickness control and a Siemens electric control system for stable, automated operation. Although the mill has been taken out of production, it remains in mechanically intact and electrically functional condition. The equipment is suitable for rolling stainless steel, carbon steel, silicon steel, and low-alloy steel strips. Optional value-added services include on-site disassembly, full refurbishment and maintenance, transportation coordination, and re-installation and commissioning support, making it a flexible, cost-effective solution for secondary mill buyers worldwide.
| No. | Category | Parameter | Value | Remarks |
|---|---|---|---|---|
| 1 | Project Background | Equipment Manufacturer | Wuxi Qiaolian | Well-known Chinese metallurgical equipment manufacturer |
| 2 | Project Background | Manufacturing Date | 2009 | Over 15 years since manufacture |
| 3 | Project Background | Production Stop Date | To be confirmed | Buyer can inspect on-site before purchase |
| 4 | Technical Parameters | Mill Type | 12-Hi | 12-roller configuration |
| 5 | Technical Parameters | Number of Mill Rolls | 12 | As clearly stated in original document |
| 6 | Technical Parameters | Max. Designed Rolling Width (mm) | 1250 | Effective rolling width for strip |
| 7 | Technical Parameters | Max. Actual Rolling Width (mm) | 1250 | Consistent with design capability |
| 8 | Technical Parameters | Max. Designed Input Thickness (mm) | 3.5 | Typical for hot-rolled coils |
| 9 | Technical Parameters | Max. Actual Input Thickness (mm) | 3.5 | Verified by original user |
| 10 | Technical Parameters | Min. Designed Output Thickness (mm) | 0.15 | Precision cold rolling capability |
| 11 | Technical Parameters | Min. Actual Output Thickness (mm) | 0.15 | Achieved in production |
| 12 | Technical Parameters | Rolling Speed (m/min) | 600 | Maximum speed for high-efficiency production |
| 13 | Technical Parameters | Max. Rolling Force (KN) | 8000 | High force for reducing thicker/harder materials |
| 14 | Technical Parameters | Main Motor Power | 1000 KW × 2 | Dual motor drive |
| 15 | Technical Parameters | Main Motor Speed (rpm) | 350–900 | Variable speed for different rolling stages |
| 16 | Technical Parameters | Coiler Motor Power (KW) | 1500 | High torque for coiling under tension |
| 17 | Technical Parameters | Uncoiler Motor Power (KW) | 350 | Suitable for uncoiling hot-rolled coils |
| 18 | Technical Parameters | Coiler/Uncoiler Speed (rpm) | 350–900 | Matches main motor speed range |
| 19 | Technical Parameters | Working Roll Specification (mm) | Φ100–Φ120 × 1400 | Smaller diameter for better strip flatness |
| 20 | Technical Parameters | Intermediate Roll Specification (mm) | Φ215–Φ225 × 1200-1400 | Adjustable width range |
| 21 | Technical Parameters | Screw-down Type | AGC (hydraulic) | Automatic gauge control for precision |
| 22 | Technical Parameters | Coiling Drum Type | Collapsible drum | Easy coil removal after winding |
| 23 | Electrical System | Control System Manufacturer | Siemens | Internationally recognized brand |
| 24 | Electrical System | System Condition | Good, complete | Need to confirm |
| 25 | Spare Parts | Spare Parts Included | Yes | Need to confirm |
| 26 | Services | Disassembly Service Available | Yes (cost separate) | Need to confirm |
| 27 | Services | Refurbishment Service Available | Yes (cost separate) | Need to confirm |
| 28 | Services | Installation Support Available | Upon request | Negotiable |
The 12-Hi mill configuration, as specified in the technical data sheet, offers several advantages:
Work roll diameter ranges from Φ100 mm to Φ120 mm, with a barrel length of 1400 mm, allowing high specific pressure for efficient thickness reduction per pass.
Intermediate rolls range from Φ215 mm to Φ225 mm in diameter, with an adjustable length between 1200 mm and 1400 mm, providing flexibility for strip shape control.
The mill is designed for a maximum rolling force of 8000 KN, indicating a robust roll stack structure capable of handling hard materials and significant reductions.
Collapsible coiling drum allows easy removal of finished coils without damaging the inner wrap.
AGC hydraulic screw-down system responds quickly to thickness variations, ensuring uniform gauge across the entire strip length.
The mill is equipped with a Siemens-brand electric control system, as confirmed in the original document. The system is reported to be in good condition with no missing components (to be reconfirmed). Typical components of such a system include:
Main drive control cabinets
AGC hydraulic servo control unit
Operator interface panels
Emergency stop and safety interlock system
Coiler/uncoiler tension control module
Buyers are encouraged to conduct on-site verification of the electrical system before finalizing the purchase.
Mechanical condition: The main frame, roll chocks, gearboxes, work rolls, intermediate rolls, and coiler/uncoiler drums are reported to be intact. Detailed inspection is recommended.
Hydraulic system: AGC hydraulic system is in place; full functionality to be confirmed during recommissioning.
Electrical system: Siemens cabinets are complete according to available information; no major missing components reported.
Wear parts: Work rolls (Φ100–Φ120 mm) and intermediate rolls (Φ215–Φ225 mm) show normal wear from prior use.
Overall rating: Suitable for refurbishment and reinstallation; estimated remaining service life of 8–12 years with proper maintenance.
Based on its design parameters, this 12-Hi cold rolling mill is capable of processing the following materials:
Stainless steel
Carbon steel
Silicon steel (electrical steel)
Low-alloy steel strips
Typical end products include:
Household appliance panels (refrigerators, washing machines)
Automotive interior and structural parts
Light industrial components
Precision stamped parts
Thin-wall welded tube raw strips
| Service | Description | Cost Status |
|---|---|---|
| Disassembly | On-site dismantling, labeling, and packing | Separate quotation |
| Refurbishment | Cleaning, derusting, painting, part replacement, roll grinding | Separate quotation |
| Transportation coordination | Logistics arrangement to port or buyer's site | At buyer's cost |
| Re-installation & commissioning | Full re-assembly, calibration, trial run | Separate quotation |
| Training | On-site training for operators and maintenance staff | Negotiable |
All technical data presented above are based strictly on the original document provided, without adding unconfirmed information about backup roll quantities or other unspecified details.
The exact production stop date is not specified in the document; buyers are strongly advised to arrange an on-site inspection before purchase.
Photos attached to the original document show actual equipment appearance, including rollers, coiler, and control panels.
Electrical system completeness should be re-verified at the time of disassembly or before shipment.
This equipment is sold as-is, with refurbishment services available as an optional add-on.
