Products Description
The YGJ140 Oil Tubing and Casing Straightening Machine is a professional steel pipe straightening equipment specially developed to repair bent oil tubing, casing and round bars in oilfield industries. It is applicable to pipes with outer diameter of Φ60–132mm, featured with 7-roll inclined quick-open structure in 2-1-2-1-1 layout, including 4 upper driven rolls, 2 lower driven rolls and 1 lower passive roll.
The front five rollers complete rough straightening work, while the rear three staggered rollers finish fine straightening. Supported by frequency conversion speed control system, it runs at 5-20m/min and reaches straightening accuracy within ≤1.5mm/m. Adopting hyperbolic roller structure, it increases pipe contact area, lowers residual stress, protects pipe surface and removes attachments as well as oxide skin efficiently. It is widely applied in oilfield pipe maintenance, steel pipe production and metal processing fields, and customized services are available.
Key Features & Specs
7-Roll Inclined Design for High Precision
It adopts classic 2-1-2-1-1 seven-roll inclined structure. Front 5 rollers for rough straightening and rear 3 staggered rollers for fine straightening, ensuring stable straightening accuracy ≤1.5mm/m.
Oil Tubing & Casing Specialized Design
Purpose-built for oilfield tubing and casing straightening work. Suitable for pipes within Φ60–132mm, capable of straightening pipes with initial straightness deviation up to ≤50mm/m.
High Efficiency & Wide Application Range
Supported by stepless frequency conversion speed regulation, the working speed ranges from 5 to 20m/min, which can meet diverse straightening demands for different pipe specifications.
Hyperbolic Roller Technology
Hyperbolic roller design optimizes contact area with pipes, effectively improving straightening effect, reducing residual stress, avoiding pipe surface damage and stripping surface attachments and oxide layers easily.
Hydraulic Pressure Adjustment & Intelligent Control System
Straightening pressure can be adjusted freely according to pipe diameter and wall thickness. Equipped with two 45kW main motors and one 45kW hydraulic unit motor. Full set of electric control system guarantees long-term stable and safe operation.
Equipment Parameters
| Specification | Value |
|---|---|
| Model | YGJ140 |
| Number of Straightening Rolls | 7 rolls (4 upper driven + 2 lower driven + 1 lower passive). |
| Straightening application | 60-132mm |
| 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 | 45kW×2 |
| motor power of hydraulic unit | 45kW |
| Equipment Weight | 35T |
Note: The conversion for 10 MPa to psi is approximately 3,231psi.
I. YGJ140 Oil Tubing and Casing Straightening Machine 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 YGJ140 adopts a 7 slanted rollers quick-open structure in form of 2-1-2-1-1, 2 bottom driving rollers,1 bottom driven roller, and 4 upper driving rollers. The front 5 relative rollers is used for rough straightening, and the back 3 interlaced rollers 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 YGJ140 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. Main Parts of YGJ120 Pipe Straightening Machine
(1) Main machine
1) Machine frame
2) Upper straightening rollers system
3) Upper rollers slope angle regulating system
4) Bottom straightening rollers system
5) Pressing down adjusting cylinder
(2) Straightening rollers
(3) Charging & discharging table
(4) Hydraulic system
1) Hydraulic unit
2) Valves
3) Integrated block
4) Pipelines
5) Fan cooler
6) Water cooler
(5) Electric control cabinet
1) Ampere meter
2) Voltage meter
3) Indicator light
4) 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 |
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 Cabinet
| No. | Equipment Name | Quantity (Set) |
|---|---|---|
| 1 | Ampere Meter | 1 |
| 2 | Voltage Meter | 1 |
| 3 | Indicator Light | |
| 4 | Switches and Buttons | 1 |
III. Referenced Images of YGJ140 Oil Tubing and Casing Straightening Machine
1. YGJ140 Oil Tubing and Casing Straightening Machine to Henan
2.YGJ140 Oil Tubing and Casing Straightening Machine to Heilongjiang
FAQ
Q1. What pipe sizes can the YGJ140 oil tubing and casing straightening machine handle?
A1. The YGJ140 oil tubing and casing straightening machine is suitable for steel pipes and round bars with outer diameter from Φ60mm to Φ132mm, perfectly matching daily straightening work of oilfield tubing and casing.
Q2. What is the straightening accuracy of this 7-roll pipe straightening machine?
A2. This 7-roll pipe straightening machine can achieve straightening accuracy of ≤1.5mm/m, and it is able to straighten pipes with initial bending degree up to ≤50mm/m efficiently.
Q3. What is the working speed of the YGJ140 steel pipe straightener?
A3. The working speed of the YGJ140 steel pipe straightener is adjustable between 5m/min and 20m/min via advanced frequency conversion control system.
Q4. Why choose a 7-roll design instead of a 5-roll straightening machine?
A4. The 2-1-2-1-1 seven-roll inclined structure integrates rough straightening and fine straightening in one process. Compared with traditional 5-roll straightening machine, this 7-roll straightening machine owns higher straightening precision, better pipe surface protection effect and more obvious effect on reducing internal residual stress.
Q5. What are the power requirements of the YGJ140 oil tubing and casing straightening machine?
A5. The YGJ140 oil tubing and casing straightening machine is configured with two 45kW main drive motors and one 45kW hydraulic station motor, delivering sufficient power support for continuous high-load oilfield pipe straightening production.
Boyu Petroleum Equipment has more than 30 years of rich experience in independent research, development and production of oilfield equipment. Our main products cover oil tubing and casing straightening machines, steel pipe hydrostatic testing machines, hydraulic bucking units and other professional oilfield equipment.
If you are in need of reliable oilfield pipe straightening equipment and complete oil tubing & casing repair solutions, please feel free to contact us to obtain detailed technical parameters and official YGJ140 product quotation.
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