This 650mm hot rolling mill is a high-capacity hot strip production line manufactured by Tianjin Tianzhong in 2012. The equipment features an enhanced configuration including two roughing mills, two edgers, and ten finishing stands, designed for efficient production of mild steel and low carbon alloy steel strips. With total installed power exceeding 20,000kW, this production line can process larger slabs up to 10 meters in length into high-quality hot-rolled coils weighing up to 4.5 tons, with thickness ranging from 1.3mm to 5.7mm and width from 145mm to 380mm.
| Item | Parameter | Remarks |
|---|---|---|
| Equipment Name | 650mm Hot Rolling Mill | Complete Production Line |
| Manufacturer | Tianjin Tianzhong | - |
| Start-up Year | 2012 | - |
| Rolling Materials | Mild Steel, Low Carbon Alloy Steel | - |
| Coil Weight | 4.5 Tons | Higher capacity |
| Item | Specification | Remarks |
|---|---|---|
| Slab Size | 150 × 150 mm | Square billet |
| 165 × 165 mm | Square billet | |
| 165 × 280 mm | Rectangular billet | |
| 165 × 350 mm | Larger rectangular billet | |
| Slab Length | 6000 - 9000 - 10000 mm | Up to 10 meters |
| Item | Specification | Remarks |
|---|---|---|
| Finished Width | 145 - 380 mm | - |
| Finished Thickness | 1.3 - 5.7 mm | - |
| Coil Weight | 4.5 Tons | Higher productivity |
| Section | Configuration | Number of Stands | Description |
|---|---|---|---|
| Roughing Mills (RM) | 3-Hi | 2 stands | R1, R2 - 3-high roughing mills |
| Edgers (E) | Edger | 2 stands | E1, E2 - Edge rolling |
| Finishing Mills (FM) | 2-Hi | 6 stands | F0, F1, F2, F3, F4, F5 - 2-high finishing |
| 4-Hi | 4 stands | F6, F7, F8, F9 - 4-high finishing | |
| Total Stands | - | 14 stands | Complete heavy-duty rolling line |
| Roll Type | Specifications | Applications |
|---|---|---|
| Roughing Mill Roll (BUR) | Φ710/650 mm × 1800 mm | R1, R2 stands |
| Edger Roll - E1 (BUR) | Φ600/560 mm × 220 mm | E1 stand |
| Edger Roll - E2 (BUR) | Φ550/460 mm × 150 mm | E2 stand |
| 2-Hi Finishing Roll (BUR) | Φ630/580 mm × 550 mm | F0, F1, F2 stands |
| 2-Hi Finishing Roll (BUR) | Φ520/460 mm × 550 mm | F3, F4, F5 stands |
| 4-Hi Work Roll (WR) | Φ335/300 mm × 690 mm | F6-F9 stands |
| 4-Hi Backup Roll (BUR) | Φ520/460 mm × 550 mm | F6-F9 stands |
| Stand | Roll Diameter (mm) | Barrel Length (mm) | Speed (rpm) | Voltage (V) | Rolling Force (kN) | Rolling Torque (kN·m) | Power (kW) |
|---|---|---|---|---|---|---|---|
| E1 | Φ600/560 | 220 | 1000 | 400 | 600 | 35 | 335 |
| E2 | Φ550/460 | 150 | 1500 | 400 | - | - | 143 |
Total of 14 rolling stands: 2 roughing mills (3Hi), 2 edgers, 10 finishing mills
Finishing section includes 6 stands of 2-Hi and 4 stands of 4-Hi configuration
More stands than standard configuration for better product quality
Suitable for various steel grades including mild steel and low carbon alloy steel
Two roughing mill motors: 3600kW each, 1000V high voltage design
Six 2-Hi finishing mill motors: 1500kW each (F0-F5)
Three 4-Hi finishing mill motors: 1250kW each (F6-F8)
One 4-Hi finishing mill motor: 1000kW (F9)
Edger motors: 335kW and 143kW for precise width control
Total installed power exceeds 20,000kW - significantly higher than standard mills
Accepts multiple slab sizes: 150×150mm, 165×165mm, 165×280mm, 165×350mm
Extended slab length range: 6000-10000mm (up to 10 meters)
Capable of processing larger billets for higher productivity
High output with 4.5-ton coil weight - nearly double standard capacity
Finished product width: 145-380mm
Finished thickness range: 1.3-5.7mm
Suitable for multiple applications in construction, manufacturing, and automotive industries
Produces high-quality hot-rolled strips with consistent dimensions
Roughing mills: Two 3-high stands with large Φ710/650mm rolls for efficient breakdown
First edger (E1): Φ600/560mm rolls with 220mm barrel, 600kN rolling force
Second edger (E2): Φ550/460mm rolls with 150mm barrel for precision control
Finishing mills: Progressive combination of 2-high and 4-high stands
4-high stands feature work rolls (Φ335/300mm × 690mm) and backup rolls (Φ520/460mm × 550mm)
Extended work roll barrel (690mm) for wider and more stable rolling
Roughing mill speed: 490 rpm
Finishing mill speeds: 550-1200 rpm range
Edger speeds: 1000-1500 rpm for efficient width control
Designed for high-throughput production
Manufactured in 2012 by Tianjin Tianzhong, a reputable Chinese manufacturer
Relatively newer equipment with modern design
Well-maintained during operational period
Complete line with all stands and motors
Ready for inspection and purchase
Processes slabs up to 10 meters in length
Produces 4.5-ton coils for downstream processing - higher than standard
Multiple finishing stands ensure high throughput and quality
Suitable for medium to large-scale hot strip production
Two edger stands with dedicated motors
E1: 600kN rolling force for primary width reduction
E2: High-speed (1500 rpm) for final width adjustment
Ensures accurate finished width within 145-380mm range
This 650mm hot rolling mill represents a high-capacity, well-configured production line for hot-rolled strips. Manufactured by Tianjin Tianzhong in 2012, the line features 14 rolling stands including two 3-high roughing mills, two edgers for width control, and ten finishing mills (six 2-high and four 4-high stands). The powerful drive system, with two 3600kW roughing motors and a combination of 1500kW, 1250kW, and 1000kW finishing motors, ensures efficient processing of mild steel and low carbon alloy steel slabs. Total installed power exceeds 20,000kW, significantly higher than standard mills. The mill can process larger slabs of various sizes (up to 165×350mm and 10 meters in length) into finished coils weighing 4.5 tons, with thickness ranging from 1.3mm to 5.7mm and width from 145mm to 380mm. With its enhanced configuration, higher power capacity, larger slab processing capability, and proven reliability, this hot rolling mill is an excellent choice for investors looking to establish or expand medium to large-scale hot strip production operations.
