Products Description
Equipment Parameters
| Specification | Value |
|---|---|
| Model | YGJ120 |
| Number of Straightening Rolls | 7 rolls (4 top rolls, 3 bottom rolls) |
| Straightening application | Ø60-Ø114mm |
| Roll Configuration | 2-1-2-1-1 seven-roll inclined arrangement |
| Straightness tolerance before being straightened | ≤ 50mm/m |
| Working speed | 5~20m/min |
| Straighten accuracy | ≤ 1.5mm/m |
Roll Drive System | Electrically drive |
| Main motor power | 30kW×2 |
| motor power of hydraulic unit | 22kW |
| working pressure of hydraulic system | 10MPa |
Control System | Siemens S7-1200 PLC + 15" industrial PC control ,PLC auto control / Push-button operation |
| Equipment Weight | 35T |
Note: The conversion for 10 MPa to psi is approximately 1,450 psi.
I. Structures and Features
1. Overview
The straightening machine is a special equipment to repair bend pipes, the model YGJ140 is used for 60-132mm pipes & bars.
The straightening machine YGJ120 adopts a 2-1-2-1-1 seven slanted rollers straightening. 2 bottom driving rollers and 3 upper driving rollers are used for rough straightening. 1 bottom driven roller and 1 upper driven roller are used for fine straightening. The reducing motor (stepless frequency conversion adjusted) drives the main power. The hyperbolic rollers can enlarge the contacting surface on the pipes.
The straightening pressure can be regulated according to the pipe diameter & wall thickness. In straightening, the 2 pairs of rollers keep the fixed pressure to increase the friction force & reliability and reduce the slipping.
The YGJ120 straightening machine has features of big straightening capacity, high efficiency, good quality, low residual stress, high linearity, smooth surface, extend the pipe service life effectively, also can shed adhesion layer & oxide skin inner or outer the pipe.
2. Process Workflow
Feeding Pipe → Pipe Flipping → Conveying by Transmission Rollers → Rough Straightening → Fine Straightening → Collar Bypass Handling → Reciprocating Straightening → Discharge to Output Rack → Next Cycle
3. Main Parts of YGJ120 Pipe Straightening Machine
Main machine
Machine Frame
Upper Straightening Rollers System
Upper Rollers Slope Angle Regulating System
Bottom Straightening Rollers System
Pressing Down Adjusting Cylinder Assembly
Traightening Roller
Charging table
Discharging table
Hydraulic system
Hydraulic Unit
Valves
Integrated Block
Pipelines
Fan Cooler or Water Cooler
Electrical Control System
Electric control cabinet
Ampere Meter
Voltage Meter
Indicator Light
Switches and Buttons
II. Scope of Supply
1.Main machine
| No. | Equipment Name | Quantity (Set) |
|---|---|---|
| 1 | Machine Frame | 1 |
| 2 | Upper Straightening Rollers System | 1 |
| 3 | Upper Rollers Slope Angle Regulating System | 1 |
| 4 | Bottom Straightening Rollers System | 1 |
| 5 | Pressing Down Adjusting Cylinder Assembly | 1 |
| 6 | Charging Table with Turn-Over Plates | 1 |
| 7 | Discharging Table with Saving Rack | 1 |
| 8 | Point Straightening Device (for blind areas) | 1 |
2. Hydraulic System
| No. | Equipment Name | Quantity (Set) |
|---|---|---|
| 1 | Hydraulic Unit | 1 |
| 2 | Valves | 1 |
| 3 | Integrated Block | 1 |
| 4 | Pipelines | 1 |
| 5 | Fan Cooler or Water Cooler | 1 |
3. Electrical Control System
| No. | Equipment Name | Quantity (Set) |
|---|---|---|
| 1 | Electric Control Cabinet | 1 |
| 2 | Ampere Meter | 1 |
| 3 | Voltage Meter | 1 |
| 4 | Indicator Light | |
| 5 | Switches and Buttons | 1 |
III. Referenced Images of YGJ120 Pipe Straightening Machine
1. YGJ120 Pipe Straightening Machine to Canada



2. YGJ120 Pipe Straightening Machine to Liaoning Province



3. YGJ120 Pipe Straightening Machine to Ningxia



4. YGJ120 Pipe Straightening Machine to Shanxi Province



5. YGJ120 Pipe Straightening Machine to Shandong Province

![1752650291928461.jpg P190611_13.33_[01].jpg](/static/upload/image/20250716/1752650291928461.jpg)

6. YGJ120 Pipe Straightening Machine to Shanxi Province



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