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Steel BOX H Beam Horizontal Press Straightening Machine 7

Wuxi JACK Hydraulic Drive BOX H Beam Longitudinal Horizontal Press Straightening Machine, 

Reliably and High Efficiently Correcting Lengthways Deform of Long Steel Structure Workpieces

Applicable Workpieces of Wuxi JACK Steel Structure BOX H Beam Longitudinal Straightening Machine

1) Function: As a specialized and featured product of I H Beam Straightening Machine, Wuxi JACK HJ models steel structure BOX H Beam Lengthways Straightening Machine is used for correcting on longitudinal deformation along the entire length of long workpieces, including but not limited to: H Beam/ BOX Beam/ Section Steel/ Square Pipe/ Any elongated steel structure;
2) Application Background: The longitudinal deformation of workpieces may be caused from large current SAW heat input, transportation, or storage:
a) Length direction winding H Beam, which needs to be straightened in steel structure BOX H Beam Lengthways Straightening Machine: (Fig.1)

Fig1 Steel Structure BOX H Beam Horizontal Press Straightening Machine 1

b) Straightening on a piece of BOX Beam, with Wuxi JACK HJ20 model Steel Structure BOX H Beam Longitudinal Straightening Machine, during machine production: (Fig.2)

Fig2 Steel Structure BOX H Beam Longitudinal Straightening Machine 19

c) In June 2026, when a South Korean customer contacted with Wuxi JACK on HJ models BOX H Beam Longitudinal Horizontal Press Straightening Machine, photo of the H Beam they plan to straighten on, along its longitudinal body: (Fig.3)

Fig3 BOX H Beam Longitudinal Straightening Machine 3

3) Another Function of Machine: On the other hand, this BOX H Beam Lengthways Straightening Machine can also be used for doing reverse job: to bend a straight long workpiece into arc shape: (Fig.4)

Fig4 Steel Structure BOX H Beam Horizontal Press Straightening Machine 54

Various Models of Wuxi JACK Steel Structure BOX H Beam Lengthways Straightening Machine

1. Major Specifications of Wuxi JACK Steel Structure BOX H Beam Longitudinal Horizontal Press Straightening Machine:

Unlike other types of steel structure straightening machines:
1) H Beam Straightening Machine;
2) Angle Steel Straightening Machine;
3) Steel Plate Angle Stiffener Unit Straightening Machine;
Which differs among models based on the max. specification of workpieces, especially thickness, here HJ models BOX H Beam Longitudinal Horizontal Press Straightening Machine is kind of Hydraulic Press Machine, which act along longitudinal direction of workpieces to straighten. So, machine models are determined on the basis of the max. hydraulic drive output pressing force in the unit of tonnage:
For example:
1) The smallest model HJ20 implicates the max. straightening force of 20 tons;
2) The largest model HJ300 corresponds with the max. straightening force of 100 tons;
 

2. Different Models of Wuxi JACK BOX H Beam Longitudinal Straightening Machine:

Wuxi JACK assembler packs main frame of HJ20
Make delivery on HJ300, at Wuxi JACK workshop
HJ300 BOX H Beam Longitudinal Straightening Machine finished installation at customer facility
The same set of HJ300, customer mechanic and main machine
HJ270 and its workpiece (H Beam), at East European customer workshop
The last generation HJ200 in operation, over 10 years (2015) ago
The assembled main frame of HJ100 BOX H Beam Lengthways Straightening Machine at Wuxi JACK workshop
The old generation HJ220 straightens on BOX Beam

Wuxi JACK Newly Produced Steel Structure BOX H Beam Longitudinal Horizontal Press Straightening Machine in Year 2025 and 2026

1. Wuxi JACK Position on Steel Structure BOX H Beam Longitudinal Straightening Machine:

Relatively small selling volume, but ranks top in industry:
1) This is one of the featured products of Wuxi JACK: It is a type of niche product in market, which does not have as much as customer demand as other types of steel structure straightening machines. Correspondingly, only very few professional companies in industry, who has strong technical strength and rich experience to design and produce this BOX H Beam longitudinal Horizontal Press Straightening Machine, with stable and high quality, and Wuxi JACK is the leading company in this field;
2) From January 2025 to today end of July 2026, within the past 19 months, Wuxi JACK has produced 8 sets of BOX H Beam Longitudinal Straightening Machine, from HJ20 model to HJ300 model:
 

2. HJ300 Model Large Steel Structure BOX H Beam Lengthways Straightening Machine:

This is the largest model, and also the most often selected by customer. In 2025 and the first 7 months of year 2026, Wuxi JACK delivered 3 sets of HJ300 to customers:
0 Steel Structure BOX H Horizontal Press Straightening Machine 42
In January 2026, an East European customer purchased 2 sets of HJ300 BOX H Beam Longitudinal Horizontal Press Straightening Machine. The machines were produced at Wuxi JACK
Assemble on straightening unit: Bushing of oil cylinder, straightening stroke ruler
Main frame of the 2 sets of HJ300 before painting, and hydraulic pump station
Painted and ready for delivery main frames of the 2 sets of HJ300
Packed rollers of input and output conveyors

3. HJ20 Small Model Steel Structure BOX H Beam Longitudinal Horizontal Press Straightening Machine:

HJ20 is the smallest model, suitable for high efficiently straightening on small workpieces. It has advantages of compact size and low investment. In December 2025 to January 2026, Wuxi JACK produced a set of HJ20 for another East European customer:
Straightening mechanism of finished HJ20
From customer, the installed Wuxi JACK HJ20 at their new workshop, in March 2026
2 main sections composing main machine: Base bed and workpiece pressing beam
Input and output conveyor roller tables of BOX H Beam Lengthways Straightening Machine

Operating Videos of Wuxi JACK Steel Structure BOX H Beam Longitudinal Straightening Machine

Model Selection on Wuxi JACK Steel Structure BOX H Beam Longitudinal Horizontal Press Straightening Machine

HJ20
HJ100
HJ300
HJ200

1) The most important step for customers purchasing on BOX H Beam Longitudinal Straightening Machine, is to decide on the max. straightening force that should be acquired, and hence model of the machine can be confirmed. For example, if customer wants to acquire up to 220 tons straightening force, then machine model is HJ220;
2) For this purpose, sometimes customer ask Wuxi JACK engineers to give suggestion on proper straightening capacity of machine, and give us workpieces specifications accordingly;
3) As reference, below is rule of thumb on applicable specifications of H Beam, that can be used for selecting proper models of our BOX H Beam Lengthways Straightening Machine. These empirical data is accumulated by Wuxi JACK engineering team with 20+ years hard work and experience. Other types of common seen steel structure workpieces, such as BOX Beam/ Pipe/ Section steels can take these data as reference:

4) H Beam Specifications and Proper Wuxi JACK Steel Structure BOX H Beam Longitudinal Straightening Machine:

 

Machine Model Max. Output Straightening Force Specifications of Max. Applicable H Beam
Web
Height		 Web Thickness Flange
Width		 Flange
Thickness
HJ20 20 Ton 400 10 200 12
HJ100 100 Ton 500 12 400 20
HJ200 200 Ton 600 30 500 35
HJ300 300 Ton 800 32 600 40

 

Technical Parameters of Wuxi JACK Steel Structure BOX H Beam Longitudinal Straightening Machine

Steel BOX H Beam Longitudinal Straightening Machine 19 IMG_7329

1. Model examples of our BOX H Beam Lengthways Straightening Machine: HJ20/ HJ100/ HJ200 and HJ300, which are nominated on the basis of the max. generated pressing force for straightening. Any other specific rated force within this scope (20 Ton - 300 Ton) is available for production:

 

2. Technical Specifications of Wuxi JACK Steel Structure BOX H Beam Longitudinal Horizontal Press Straightening Machine:

 Machine Model  HJ20 to HJ300
 The Max. Output Pressing Force for Straightening  20 to 300 ton
  Source of Straightening Force  Hydraulic oil cylinder
 Diameter of Oil Cylinder  Φ400mm
  Diameter of Piston Rod  Φ320mm
 Stroke of Oil Cylinder and Pressing Head   700- 800mm,
  measured by ruler
 Hydraulic Drive Motor   3/ 7.5/ 11/ 22 kW
 Rated Pressure of Hydraulic System   25 MPa
 Max. Pressure of Hydraulic System  32 MPa
 Power of Input and Output Conveyor Roller Table  1.5kW x 2
 Machine Weight  3.2 to 12 ton

Order to Delivery Value Chain of Wuxi JACK Steel Structure BOX H Beam Longitudinal Horizontal Press Straightening Machine

1 BOX H Beam Horizontal Press Straightening Machine 16 IMG_7088
2 BOX H Beam Longitudinal Straightening Machine 39 IMG_7126
3 BOX H Beam Lengthways Straightening Machine 13 IMG_1642
4 BOX H Beam Horizontal Press Straightening Machine 42
5 BOX H Beam Longitudinal Straightening Machine 35 IMG_7127
6 BOX H Beam Lengthways Straightening Machine 14 IMG_7004

Technical Brief on Wuxi JACK Steel Structure BOX H Beam Lengthways Straightening Machine

A. What Can Steel Structure BOX H Beam Longitudinal Straightening Machine Do for Customers:

1. Deformation generated on workpieces: At the completion of welding BOX/ I / H Beam fabrication, there are 2 major types of deformation generated during welding, which are caused from SAW/ GMAW welding heat input:
1) H Beam Flange up bend deformation;
2) Deflection along the entire length direction of workpiece- This can also be caused from long distance transportation, or long time storage of BOX H Beams;
2. Straightening Operation: These flange and longitudinal deformations should be corrected by means of different types H Beam Straightening Machine, to make these steel structures eligible for subsequent process technology:
1) H Beam flange being straightened with Wuxi JACK YTJ80 hydraulic H Beam Straightening Machine: (Fig.1)

Fig1 Hydraulic H Beam Straightening Machine 24

2) BOX Beam being straightened along in its longitudinal body, in Wuxi JACK HJ20 model Beam Longitudinal Straightening Machine: (Fig.2)

Fig2 Steel BOX H Beam Longitudinal Straightening Machine 32

2. Workpieces Applicable for Wuxi JACK Steel Structure BOX H Beam Longitudinal Horizontal Press Straightening Machine:

1) Besides H Beam and BOX Beam, this machine can also be used for straightening on other long structure workpieces. These workpieces had better with small cross section, and should with square/ rectangular shape;
2) Typical workpieces include: H Beam/ Section Steel/Channels steel/ BOX Beam/ Cross Beam / Structure member, etc.. Using special fixture, this machine can also straighten on round workpieces like long pipes;
3) Meanwhile, customer can also utilize heavy reliable hydraulic force, to bend the original straight workpieces into curve body;
4) Summing up, this is an important Steel Structure Straightening Machine, being extensively applied in related industries.
 

B. Operation and Advantages of Wuxi JACK Steel Structure BOX H Beam Longitudinal Horizontal Press Straightening Machine:

1. Work Mode of Steel Structure BOX H Beam Longitudinal Straightening Machine：

1) Workpiece Positioning and Secure: During work, workpiece is laid onto worktable, in perpendicular to lateral straightening head. Longitudinal direction deformation is then straightened segment by segment, along the entire length of workpiece;
2) Straightening Force and Acting Direction: Lengthways straightening is carried out under hydraulic oil cylinder drive:
3) H Beam being straightened in Wuxi JACK HJ300 model machine at customer facility: (Fig.3)

Fig3 Steel BOX H Beam Horizontal Press Straightening Machine 7

2. Strong Points of Wuxi JACK Steel Structure BOX H Beam Lengthways Straightening Machine:

1) Universal Use: Suitable on all types of elongated steel structure workpieces;
2) Double Functions: Both straightening and bending operations;
3) Reliability: Heavy and consistent straightening force, driven with hydraulic oil cylinder;
4) Quality: Precise and manageable straightening stroke control with mechanism;
5) Safe, easy and intuitive operation;
6) High productivity and low running cost

Work Principle of Wuxi JACK Steel Structure BOX H Beam Longitudinal Horizontal Press Straightening Machine

Design sketch on work unit of Wuxi JACK steel structure Beam BOX H Beam Longitudinal Horizontal Press Straightening Machine: (Fig.1)

Fig1 Steel structure BOX H Beam Horizontal Press Straightening Machine 41

The below handwriting sketch illustrates on how to straighten on H Beam along its lengthways direction:
1. Straightening Form: The workpiece is straightened segment by segment. Each segment has adjustable length of 1500mm to 2000mm;
2. 3 Points Acting Straightening Theory: Workpiece is held against machine pressing beam, in the way of 3 points act: Point 1 and 2 (The above 1st sketch and 2nd photo) are force bearing points, determining length of segment for straightening;
3. Straightening Act Point: The opposing side of workpiece is pressed on Point 3 (As indicated in the above 1st sketch and 2nd / 3rd photos) by means of pressing head, which is in turn driven with oil cylinder guided with gloss bushing;
4. Summary: In all, during operation of Wuxi JACK steel structure BOX H Beam Longitudinal Straightening Machine, point 1 and 2 are fixed positioning points (Its positions should be adjusted ahead of time), for firmly holding on H Beam, and point 3 is for applying on straightening force, within the stroke of 700mm;
5. Straightening Theory: In this respect, we can say that HJ models machines work in the principle of "Three Points Loading";
 

6. Workpiece Release in Steel Structure BOX H Beam Lengthways Straightening Machine:

1) The 2 pieces of ejectors with 1335 mm distance apart (Shown in the above 2nd photo, point 4 and 5) are for pushing the workpiece away from the pressing beam, every time at the completion of straightening;
2) In this way, the workpiece is straightened along its length direction in segments, until the entire piece going thru the BOX H Beam Longitudinal Horizontal Press Straightening Machine, and acquire longitudinal straightened workpiece;
 

7. Workpiece Transportation in Wuxi JACK Steel Structure BOX H Beam Longitudinal Straightening Machine:

1) Workpiece Send Forward: After straightening current segment, workpiece is pushed forward under motor drive, and the next segment straightening begins. This explains why, for technical parameters of this machine, there is no conveying speed of input and output conveyors, because it is not in continuously manner;
2) Operation: Workpiece send forward is by pressing button on remote pendant: (Fig.3)
Fig2 Steel Structure BOX H Beam Longitudinal Straightening Machine 17

Put into Use on Wuxi JACK Steel Structure BOX H Beam Longitudinal Straightening Machine

1. Operating Pendant of Wuxi JACK BOX H Beam Lengthways Straightening Machine:

The above 1st photo:
1) Cable of operating pendant has sufficient length. So, the pendant can be taken flexibly within the entire work zone. During work, operator takes operating pendant, for managing and monitoring on straightening operation;
2) All working steps: Machine start on and switch off/ indicating lamp/ Workpiece clamp/ pressing head forward and retreat, can all be managed conveniently with this pendant;
 

2. Precise Straightening Stroke Management in Wuxi JACK Steel Structure BOX H Beam Longitudinal Horizontal Press Straightening Machine:

The above 2nd photo:
1) To precisely control straightening stroke of pressing head, the critical process control parameter of longitudinal straightening, there is indicating ruler right above the pressing head and oil cylinder;
2) During straightening operation, the indicating index moves to the related indication on the ruler, corresponding to actual straightening stroke of pressing head at that moment, thus acquiring correct negative feedback on straightening stroke control;
 

3. Applicable for Different Workpieces Specifications in Steel Structure BOX H Beam Longitudinal Straightening Machine:

The above 3rd photo:
1) Depending on workpiece cross section width, distance between the 2 force bearing points: Point 1 and 2 can be adjusted, within the range of 1500mm to 2000mm;
2) This is originated from delicate design of Wuxi JACK engineers. Here it just serves as rough guide on proper operation. In all, the force bearing points 1 and 2 can be adjusted flexibly and secured firmly, along guide slot of pressing beam;
 

4. Small Model HJ20 Steel Structure BOX H Beam Longitudinal Horizontal Press Straightening Machine:

The above 4th photo:
1) Integral Design: For compact size HJ20 model, its electric control board and operating panel are integrated onto machine main frame;
2) Split Structure: Larger models (HJ100 / HJ200, and HJ300) have split structure: Control board and operating panel are separated from machine main frame.

Installation of Wuxi JACK Steel Structure BOX H Beam Lengthways Straightening Machine at Customer Facility

1. Layout of Wuxi JACK Steel Structure BOX H Beam Longitudinal Straightening Machine:

Below is on site layout of Wuxi JACK HJ300 model (The max. 300 Ton straightening force) steel structure BOX H Beam Lengthways Straightening Machine:
We can see that:
1) Total length of HJ300 is slight longer than 22m;
2) Workshop floor width for installing HJ300 is 7m;
3) Height of input and output conveyors top surface is 720mm;
4) Hydraulic pump station and electric control board should be put alongside machine main frame, the straightening worktable;
5) Straightening unit height of HJ300 is 1400mm, applicable for adult male operator. This conforms to Chinese national ergonomics standard.
Steel Structure BOX H Beam Horizontal Press Straightening Machine 53

2. Main Units of Wuxi JACK Steel Structure BOX H Beam Longitudinal Horizontal Press Straightening Machine:

1) Mechanical Main Frame of Steel Structure BOX H Beam Lengthways Straightening Machine:

The above 1st photo:
a) This is machine worktable for longitudinal straightening;
b) During work, workpiece is laid along machine conveyor roller tables;
c) Longitudinal straightening is implemented in sections. In this way, workpiece is sent forward bit by bit, with the pace controlled by operator, going through the machine gradually;
d) Straightening worktable can be further disassembled into pressing head (The above 3rd photo) and pressing beam (The above 4th photo);
 

2) Overall Layout of Steel Structure BOX H Beam Lengthways Straightening Machine:

The above 2nd photo:
This reflects on actual on-site arrangement of the machine:
a) Straightening worktable, including 2 main sections of base bed and pressing beam;
b) Input and output conveyor roller tables;
c) hydraulic pump station;
d) Electric control board;
Need to leave out sufficient space for personnel move, and workpiece loading;
 

3) Straightening Press Head of Wuxi JACK Steel Structure BOX H Beam Longitudinal Straightening Machine:

The above 3rd photo:
a) Operation Way: Moving forward is driven with hydraulic oil cylinder, with stroke controlled visually by operator. This is the core element of straightening operation;
b) Alarm Color for Safety Purpose: This pressing head is painted into eye catching red and black staggered stripe pattern, so as to warn operator not to approach, or come into direct contact;
c) Precision and Reliability: Driven with oil cylinder, straightening operation of pressing head is guided accurately with precisely machined bushing, and indicated intuitively with ruler;
d) Material and Workmanship of Press head: It is made of 35 molybdenum alloy material, and went thru advanced heat treatment, guaranteeing on sufficient strength and toughness, to sustain daily repeat straightening job. This fully promises long term consistent and reliable performance of our Steel Structure BOX H Beam Longitudinal Straightening Machine;
e) Service Life: This pressing head has the same service life as machine itself. It is not consumables, and should be maintained properly;
 

4) Fixed Pressing Beam of Steel Structure BOX H Beam Longitudinal Horizontal Press Straightening Machine:

The above 4th photo:
a) This is the fixed section of machine;
b) The 2 pieces of force bearing points (Point 1 and 2) for workpiece positioning purpose, together with workpiece ejectors are installed on its internal surface. This can be observed on the machine.

Application and Related Equipment of Steel Structure BOX H Beam Longitudinal Straightening Machine

1. Application of Steel Structure BOX H Beam Longitudinal Horizontal Press Straightening Machine:

1) Application: This machine does not have as extensive application as more the frequently seen H Beam Flange Straightening Machine, which is requisite in I H Beam Production Line. If customer does not have this BOX H Beam Lengthways Straightening Machine, the common practice for straightening length direction deform, is to use flame torch, and straighten manually. Of course, such manual practice is outdated, low efficiency, the straightening effect is hard to control;
2) Potential Market Demand: On the other hand, this featured machine is not confined to H Beam Production Line use. It is a general purpose Hydraulic Press Machine, for straightening on lengthways deformation of all workpieces with long length and regular cross section. So, this machine can be applied in all Steel Structure production lines, such as BOX Beam Production Line, and Square Pipe production facility, etc.;
 

2. Related Equipment with Steel Structure BOX H Beam Lengthways Straightening Machine:

1) For Welding H Beam Production: PHJ and ZHJ series 3 in 1 H Beam Fabrication Welding Machine (3 in 1 H Beam Assembly Welding Straightening Integral Machine), this popular machine produces light to medium duty welding H Beam with single set of equipment. Under majority conditions, the finished H Beam need to be straightened along its length direction;
2) For Post Fabrication End Face Machining: DX series steel structure pipe BOX H Beam End Face Milling Machine. This machine is important in steel structure production field, suitable for similar scope of workpiece specifications as HJ models;

3. Other Important Steel Structure Straightening Machine:
1) ASM series Angle Steel Straightening Machine: It is also used for straightening longitudinal deform, on Angle Steels with thickness from 3mm to 20mm, side width from 20mm to 200mm;
2) Reinforced Ribbed Plate Unit Straightening Machine: This is another niche product of Wuxi JACK, which is o used in large project site of Port Machinery/ Shipbuilding/ Bridge Construction, etc.
HB1500 Automatic H Beam Production Line
BOX1500 BOX Beam SAW Welding Machine
CNC-DX3030 Steel Structure BOX Beam CNC End Face Milling Machine
YTJ-80 Hydraulic drive H Beam Flange Straightening Machine
PHJ15 model 3 in 1 H Beam Fabrication Welding Machine
ASM100 Angle Steel Straightening Machine
J20 Reinforced Stiffener Plate Unit Straightening Machine
RH1000 Small Steel Plate Edge Rounding Machine

FAQ on Wuxi JACK Steel Structure BOX H Beam Longitudinal Horizontal Press Straightening Machine

  • Q Is Wuxi JACK Steel Structure BOX H Beam Longitudinal Straightening Machine a fully automatic machine? What are its operating tips?

    A
    1. 1) Like other Hydraulic Press Machines, this machine involves adjustment on pressing force tonnage, and distance between two force bearing points. These are crucial for making sure reliable length direction straightening effect;
    2. 2) For operators, after loading workpiece onto its infeed roller tables, and sending it to straightening worktable, he/ she should adjust on proper hydraulic force, based on thickness/ structure/ material/ size of workpiece. In this respect, we can not say that this BOX H Beam Lengthways Straightening Machine is a fully automatic machinery;
    3. 3) On the other hand, after setting up working pressure of hydraulic valves, which is usually around 16MPa, and interval between the 2 force bearing points on press beam, hydraulic system will automatically adjust on its output pressure, and hence straightening force, based on reactive force from workpiece. Operators do not need to fret over what precisely the output straightening force should be. Hydraulic system of our machine is very “smart”. In this respect, our BOX H Beam Longitudinal Horizontal Press Straightening Machine is a highly effective and user friendly automatic equipment.

  • Q How do Wuxi JACK engineers make sure safe operation of Steel Structure BOX H Beam Longitudinal Horizontal Press Straightening Machine?

    A
    1. 1) Interlock: Electric control system of machine has interlock between adjustment step and hydraulic valves, that during operators manipulating on distance between the two clamping points, and hydraulic pressure, oil cylinder of pressing head will not act. This eliminates potential risk of accidental injury on operator;
    2. 2) The “dangerous” part of machine: Straightening head, is painted in eye catching color;
    3. 3) The extend forward velocity of pressing head is first in fast speed, then in inching mode, thus not only of high efficient and precise performance, but also avoids accidental bump between moving pressing head onto operator hands, in case of operator negligence;
    4. 4) On the other hand, no machine can guarantee fully safe work, if operator does not pay any attention. For this Steel Structure BOX H Beam Longitudinal Straightening Machine, customer team should set up proper work instruction and safe regulation, and enforce it seriously.

  • Q What are Key Points to Note for Daily Operation and Service on Steel Structure BOX H Beam Lengthways Straightening Machine?

    A
    1. 1) The careful maintenance on hydraulic system, guided with well managed TPM (Total Preventive Maintenance Plan);
    2. 2) The regular and well managed replacement plan on hydraulic oil and mechanic lubricating oil;
    3. 3) The Contamination Control of on site work environment, especially oils and moving parts (Straightening head and its drive oil cylinder);
    For these critical points of attention, we (Wuxi JACK) as producer of this BOX H Beam Longitudinal Horizontal Press Straightening Machine, give detailed suggestion in machine manual book.

  • Q How Long is Service Life of Wuxi JACK Steel Structure BOX H Beam Longitudinal Straightening Machine? Are there any Consumables needed?

    A
    1. 1) Although delivering heavy straightening force up to 300 ton, structure of this machine is relatively simple and easy to grasp, for customer mechanics. Besides, its operation is also concise, but involve proficient skill;
    2. 2) The expected high standard, controllable and stable performance of our BOX H Beam Lengthways Straightening Machine can be at least 10 -15 years, under the precondition of proper operation and maintenance;
    3. 3) There are no any consumables necessary for machine daily operation. Its running cost is rather low: Only electricity and oil.

Steel Structure BOX H Beam Longitudinal Straightening Machine
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Steel Structure BOX H Beam Horizontal Press Straightening Machine
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Steel Structure BOX H Beam Horizontal Press Straightening Machine
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