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Wuxi JACK I H Beam Assembly Machine, 

Fitting Up T Beam H Beam with High Precision and Efficiency

Models of Wuxi JACK I H Beam Assembly and Tack Welding Machine

1) Function: As the first set of dedicated I H Beam Welding Production Machine in line, I H Beam Assembly Machine fits up T Beam first and then H Beam, from strip plates cut from CNC Strip Flame Cutting Machine. The assembled T H Beam is maintained into shape with CO2 spot welding;
2) Specification: Conventional models of I H Beam Assembly and Tack Welding Machine are from Z15 (For assembling H Beam with the max. height of 1,500mm) to Z30:
Finished assembled H Beam with stitch welding seam: (Fig.1)
 

Different Models of Wuxi JACK I H Beam Assembly Machine Operate at Customer Facility:

Z20 at automatic line in CIS country
Z18 at automatic line in China
Z15 at automatic line in CIS country
Z15 at automatic line in China
Z18 in operation at Chinese steel structure facility
Z15 and CNC-CG4000 CNC Strip Cutting Machine just finished installation in new workshop
Finished Assembled and Painted Z18 at Wuxi JACK workshop
Z30 in operation at customer workshop
Z18 assembles on 40mm thickness 1500mm height large T Beam
Start up operation of Z18 at customer workshop

Newly Produced Wuxi JACK I H Beam Assembly Machine in Year 2025

In the recently past year of 2025, Wuxi JACK supplied over 10 sets of “standard” (Z15 model) and “large” (Z20, Z30 models) I H Beam Assembly and Tack Welding Machine, of which some are designed with special requirement. Below are 2 typical cases:
 

1. “Standard” Z15 Model I H Beam Assembly Machine with Heavy duty Capacity:

In July and August 2025, as part of the 2 and half heavy duty automatic line of H Beam Welding Production Machine, Wuxi JACK delivered 2 sets of Z15 model, with larger H Beam flange width, and heavy flange and web thickness:
H Beam Size for assembly and tack welding: (Fig.1)
    
1) Flange thickness T: 6- 100mm
2) Flange width B       150- 1,000mm
3) Web thickness A    6- 60mm
4) Web height H          200- 1,500mm
5) H Beam length L    4000- 15,000mm
PLC and A.C. inverter for controlling spot welding seam length/ interval, and working velocity
Workshop test on T Beam assembly and CO2 stitch welding
Close view on performance test
Assembly, transmission, and electric conduction units

2. “Large” Z30 Model I H Beam Assembly and Tack Welding Machine:

In November 2025 for an Indian customer produced Z30 model, with the max. web height of 3,000mm:
1) Flange thickness T  6- 80mm
2) Flange width B        200- 1,200mm
3) Web thickness A     6- 60mm
4) Web height H           300- 3,000mm
5) H Beam length L     4000- 12,000mm
Trial on both sides in phase automatic assembly and spot welding
Front view on the assembled main machine
Painted upper section U frame of main machine
Lateral View on the assembled main frame

Technical Strong Points of Wuxi JACK I H Beam Assembly and Tack Welding Machine

1. Downward Press Beam of Wuxi JACK I H Beam Assembly Machine:

1) This unit design in Wuxi JACK machine is completely different from that of other producers, just like in the case of 3 in 1 H Beam Assembly Welding Straightening Machine:
2) Wuxi JACK machine (Left) downward press beam compared with other producers (Right): (Fig.1, 2)
   
3) Shown in the above photos, Wuxi JACK I H Beam Assembly Machine press beam has solid structure of rectangular box structure, with sliding force for driving downward movement for firmly clamping on H Beam. The manufacture cost is much higher, and performance is much reliable and smooth;
4) While in other producers’ machines, the downward press beam is guided with 4 pieces of rolling rollers, the corresponding downward movement is by means of gliding force, the corresponding performance has shorter life than Wuxi JACK products;
 

2. Overall Structure Dimension and Strength of Wuxi JACK I H Beam Assembly Machine:

1) It is not proper to paste the photo on entire set of other producers’ machine here. We just demonstrate on our main machine, to show our solid design:
2) Front view on Wuxi JACK Z15 model I H Beam Assembly Machine in year 2025, for East European customer: (Fig.3)
3) The overall dimension and manufacturing cost of Wuxi JACK I H Beam Assembly Machine is far more larger and higher than other producers. Our goal is to provide durable, stable and high quality products for customers, notShort time throwaway” products;
4) In this era of fierce competition, that many producers stealthily change their design and reduce machine manufacturing cost, so as to lower down selling price to gain more advantageous position in competition, do not truly care on real quality and subsequent performance at customer site, just for making improper profit. It is not easy to sustain belief on “Truly takes customer long term interest as 1st priority”, that Wuxi JACK insists on our design and quality of our machines. We believe customers with sagacious judgement understands value of our machines;
 

3. Solid and Durable Mechanical Assemblies of Wuxi JACK I H Beam Assembly Machine in Year 2025:

Ready for shipment the integral frame: U frame and base bed
Painted U frame
Painted base bed
Transmission roller and supporting racks

Videos of Wuxi JACK I H Beam Assembly and Tack Welding Machine, Other I H Beam Welding Production Machine

Primary Specification of Wuxi JACK I H Beam Assembly Machine

Below are major technical parameters of Wuxi JACK Z models I H Beam Assembly and Tack Welding Machine. For more detailed introduction on technical aspect of the machine, please check ending section of this page:
Models Z15/ Z18/ Z20/ Z25/ Z30
Max. Height of H Beam Web 1500/ 1800/ 2000/ 2500/ 3000mm
H Beam Web Thickness 6-32/ 60mm
H Beam Flange Width 150/200- 800/1000/1200mm
H Beam Flange Thickness 6- 40/60/80/100mm
H Beam Length 4,000- 12,000/15,000mm
H Beam Max. Weight 20 Ton
Flange and Web Assembly Form Automatic, in phase and symmetry
Welding CO2 stitch welding, with interval and length of stitch seam controlled with PLC
Assembly and Stitch Welding Velocity 200- 2000mm/min., controlled with A.C. inverter
CO2 Stitch Welding Power Supply 350- 500A
Work Mode Manual/ Single Cycle/ Automatic
Conveyor Motor 1.1kW
Main Motor 5.5kW
Input and Output Conveyor Roller Table 3 x 2600mm

Composition of Wuxi JACK I H Beam Assembly and Tack Welding Machine

Main Units of I H Beam Assembly Machine

The lefthand scrolling photos: Assemblies and components of Wuxi JACK I H Beam Assembly and Tack Welding Machine

 

To accomplish on sophisticated task of T Beam H Beam assembly and CO2 tack welding, one set of the I H Beam Assembly Machine contain below function units of:

 

1. Mechanical Frame (Main Machine) of I H Beam Assembly Machine:

1) This includes: Mechanical base bed and U shape top gantry. The 2 assemblies are packed separately for transportation, and assembled into an integral body at running site;
2)
During work, a piece of oil cylinder drive long rod, which is assembled in the U shape top gantry in vertical position, goes downward and exerts heavy downward pressure force onto T Beam and H Beam, firmly and precisely holding workpieces steadily;
3)
Central function unit, which complete final precise assembly on T Beam and H Beam, is assembled here onto base bed of mechanical main frame.

 

2. 2 Steps Assembly Units of I H Beam Assembly Machine:

This is very similar to that of 3 in 1 H Beam Assembly Welding Straightening Machine, which includes:
1) 1st step rough assembly: There are 2 pairs of hydraulic drive manipulators (Pulling rod box), which are installed at input conveyor roller tables. When flange and web are sent into machine by way of infeed roller tables, these 2 pairs of hydraulic manipulators act in phase and in sequence, clamping moving flange and web into T or H shape;
2) 2nd step precise assembly unit, this unit is installed at machine central working area, the mechanical base bed. It includes pairs of symmetrically arranged eccentric alignment rollers, which will move forward and inward toward each other, under guidance of gloss bushing driven under oil cylinders, thus in turn clamping flange and web correctly firmly and reliably.

 

3. CO2 Gas Shielded Stitch Welding Unit of I H Beam Assembly and Tack Welding Machine:

This function unit work together with assembly unit, carrying out CO2 stitch welding onto clamped flange and web, strengthening it formed into T Beam or H Beam. This unit includes:
1) 2 sets of CO2 GMAW welding power supply and its control console: Usually 350A -500A specification;
2) 2 sets of cored welding wire feeding unit;
3) 2 pieces of symmetrically installed welding torch, together with its position precise managing group.

 

4. Electric Control System and Operating Panel of I H Beam Assembly Machine:

Of all the major types of I H Beam Welding Production Machine: Including for T Beam and H Beam assembly/ welding and straightening, I H Beam Assembly Machine is the most “complicated” one in terms of machine structure and electric control, which involves PLC to manage on logic controlling stitch welding operation. This includes:
1) A.C. inverter: For continuously controlling working speed of assembly/ stitch welding within the range of 200 ~ 2000 mm/min.;
2) PLC (Programmable Logic Controller): For flexibly and precisely controlling stitch welding seam length and interval on finished T Beam and H Beam;
3) Control relays and contactors;
4) Machine operating panels, including selection on 3 optional working modes of Automatic/ Single/ Manual, digital display on displaying continuously adjustable working velocity, and corresponding turning knob.

Function and Application of Wuxi JACK I H Beam Assembly Machine

A. Raw Material and Finished Workpiece of I H Beam Assembly and Tack Welding Machine:

1. Purpose: I H Beam Assembly Machine carry out assembly and CO2 tack welding from long narrow strip plates (flange and web), turning raw materials into assembled T Beam and H Beam, ready for next step of finished continuous SAW welding;
2. Importance: As the 1st step core equipment of I H Beam Welding Production Machine, I H Beam Assembly Machine sets the stage for highly efficient and quality welding H Beam production, especially producing large size and heavy duty H Beams, the task can not be attained with 3 in 1 H Beam Fabrication Machine (H Beam Assembly Welding Straightening Machine): The max. height of H Beam web can be up to 3,000mm, and flange thickness can be up to 100mm;
3. In terms of technical characteristics, the most salient with this machine on H Beam assembly lies at its high precision on H Beam assembly and sophisticated logic control;
 

4. Input and Related Equipment of I H Beam Assembly Machine:

a) As can be seen from banner of this page, there is usually a set of CNC Strip Plate Flame Cutting Machine being installed at its preceding station, supplying long narrow strip plates as raw materials for I H Beam assembly operation, which will be served as flanges and web of T Beam and H Beam:
b) Working site of Wuxi JACK I H Beam Welding Production Machine at customer workshop: (Fig.1)
(1) Strip plates cut from CNC Strip Plate Cutting Machine;
(2) CNC Strip Plate Cutting Machine:

c) Operating workshop of Wuxi JACK Z18 model I H Beam Assembly Machine, with its finished assembled H Beam on output roller table: (Fig.2)

5. Finished Workpieces of I H Beam Assembly Machine with Tack Welding:

1) Conventional Specifications: The assembled and tack welded T Beam H Beam have common seen sizes up to 1500mm/ 1800mm/ 2000mm web height;
2) Special Specifications: Under customer requirement, the assembled H Beam has large size 2500mm /3000mm web height with special design;
3) Central function unit of Wuxi JACK machine on I H Beam assembly and CO2 tack welding in operation: (Fig.3)
 

B. Technical Features of I H Beam Assembly and Tack Welding Machine:

1. Sophistication: I H Beam assembly is the most complicated one in terms of logic control, in H Beam Welding Production Machine. This is mainly because of:
1) Stitch welding, that interval and seam of stitch welding need to be altered at will based on customer technology requirement;
2) Requirement on accuracy of T Beam and H Beam fitting up, in terms of flange and web relative position;
2. Electric Control: I H Beam Assembly Machine is the only equipment in line of H Beam Welding Production Machine, which has both A.C. inverter for VF (Variable frequency drive) working speed management, and PLC (Programmable logic controller) for flexibly controlling operation logic, and can update conveniently by technician when necessary.

Work Principle of Wuxi JACK I H Beam Assembly Machine

1. The appearance and structure of I H Beam Assembly Machine is quite similar to 3 in 1 H Beam Assembly Welding Straightening Machine. From other perspective, the latter is originated from the former:
2. Customer operation site of 2 machines: Z15 model I H Beam Assembly Machine (The left one), versus PHJ15 model 3 in 1 H Beam Assembly Welding Straightening Machine (The right one): (Fig.1, 2)
 

3. Formation of 3 in 1 H Beam Welding Machine from I H Beam Assembly Machine:

At central function zone of the machine, right following the assembly alignment rollers,
1) Replace the original 2 sets of 350A- 500A CO2 welding power supply into 1000A- 1250A SAW type;
2) Replace the original 2 pieces of CO2 stitch welding torches to SAW continuous welding torches;
3) Add on the group of straightening rollers right following SAW continuous welding torch units;
Thus come into being 3 in 1 H Beam Welding Machine. Shown as below on comparison:
4) Central function units of Wuxi JACK I H Beam Assembly and Tack Welding Machine, versus 3 in 1 H Beam Assembly Welding Straightening Machine: (Fig.3, 4)
 

Work Procedure of Wuxi JACK I H Beam Assembly Machine

A. Workpiece Assembly Step in I H Beam Assembly and Tack Welding Machine:

Same as 3 in 1 H Beam Fabrication Machine, here the assembly operation is also implemented in the two steps of:

1. First Stage Rough Assembly: (The above 1st Photo) in I H Beam Assembly Machine:

1) First, rough positioning and clamping on flange and web by means of hydraulic drive manipulators (Also called pulling rod box);
2) The 2 pairs of manipulators are located in interval along machine infeed roller tables, face to face with each other in symmetry;
3) Such rough fitting up is fulfilled simultaneously, together with flange and web sending into the main machine;

2. Second Stage Precise Assembly (The above 2nd Photo) in I H Beam Assembly and Tack Welding Machine:

1) As the clamped flange and web are sent to main machine, precise positioning and clamping is carried out, by means of hydraulic oil cylinder drive alignment rollers;
2) These alignment rollers are installed in symmetry, and at different height levels, for clamping on flange and web respectively;
3) To acquired accurate assembly effect, these alignment rollers are eccentric type. Which means, position of these eccentric alignment rollers can be adjusted in inching mode, so as to manage on flange and web position correctly, acquiring full proof accurate assembly effect;

3. The above 3rd Photo: Pressing Web with Flange Firmly in Wuxi JACK I H Beam Assembly Machine:

1) During T Beam H Beam assembly and CO2 intermittent welding operation, the workpiece is pressed and held firmly by means of a piece of downward going pressing beam, which is guided with a rod;
2) This rod is driven with an overhead oil cylinder, which are installed into machine top gantry. It is the apex point of the machine;
4. Overall view on T Beam H Beam assembly in Wuxi JACK machine is shown in the above 4th photo.

B. CO2 GMAW Welding in I H Beam Assembly and Tack Welding Machine:

1. Welding mode on H Beam assembly is small to medium current CO2 gas shielded welding, majority in the form of intermittent tack welding;
2. The nominal max. welding current is 500A, and common seen working current is around 350A;

3. Welding Environment of I H Beam Assembly Machine:

1) Unlike I H Beam Submerged Arc Welding Machine, which is adopted with no fume and SAW (Submerged arc welding), CO2 GMAW generates intense heat, fumes, noises, strong arc light;
2) Accordingly, as shown in above photos, operators need to put on proper PPE (Personal protection equipment) for maintaining personnel safety, especially helmet/ glove/ goggles;
3) The CO2 welding torches should be equipped with water cooling function, to maintain its service life.

Put into Use on I H Beam Assembly and Tack Welding Machine

1. Layout of Wuxi JACK I H Beam Assembly Machine:

Typical arrangement on Wuxi JACK Z15/ Z18/ Z20 model I H Beam Assembly and Tack Welding Machine, being installed at customer workshop is shown in below diagram:
1--- Mechanical main frame;
2--- Hydraulic drive manipulators (Pulling rod boxes) for carrying out the 1st stage fitting up of flange and web
3 --- Input conveyor roller tables;
4 --- Output conveyor roller tables;
5 --- Electric control system and operating panel;
6 --- Hydraulic pump station;
7 --- 2 sets of CO2 GMAW power supply and its control operating consoles

 

2. Installation and Operation Sites of Wuxi JACK I H Beam Assembly Machine at Customer Facility:

The above photos demonstrate on various scenarios, of Wuxi JACK I H Beam Assembly Machine being installed at different lines, either fully automatic or semi-automatic line of I H Beam Welding Production Machine. As can be seen from these photos, below points should be taken care on:
1) Logistics: Hoist, loading and flipping of workpiece is either by means of 90° turnover machine in automatic production line, or with overhead cranes in more flexibly arranged working sites;
2) Adjacent Equipment: Preceding station ahead of I H Beam Assembly Machine is CNC Strip Cutting Machine for cutting out narrow long steel plates; Subsequent station is H Beam SAW Welding Machine;
3) Function units with large size, including electric control board, CO2 GMAW welding power supplies, hydraulic pump station are put alongside main machine, convenient for daily operation and maintenance;
4) Workshop electric line should have sufficient capacity, to be sufficient for installing the entire line of I H Beam Welding Production Machine: Assembly, SAW welding, straightening, 60°/ 90°/ 180° overturning.

Work Mode and Operation on Wuxi JACK I H Beam Assembly Machine

A. 3 Working Modes in I H Beam Assembly and Tack Welding Machine:

In sequence of operation at each shift:

1. MANUAL Mode in T I H Beam Assembly Machine:

This working mode is for the purpose of:
1) Confirm on machine normal status: Start on the machine at beginning of each shift every day, for subsequent official continuous work;
2) Troubleshooting when problem happens, help identifying root cause of malfunction;
3) Commissioning on the machine before trial run;
 

2. Single Cycle in I H Beam Assembly Machine:

1) Stitch Welding Seam Form: You may understand that, the intermittent tack welding performed is in the way of one segment welding seam, followed by one segment no welding, then followed by another segment of welding seam... in such circulation:
Stitch welding seam on finished assembled H Beam: (Fig.1)
2) Definition on Single Cycle: Correspondingly, finishing one segment of welding seam together with its adjacent no welding is called Single Cycle;
3) Single Cycle usually is performed after MANUAL mode, to confirm on good operating status of the machine step by step;
 

3. AUTO Mode in I H Beam Assembly Machine:

1) Definition: The continuous performing of Single Cycle is called AUTO (Short for Automatic);
2) It should be carried out only after Manual and Single Cycle mode in sequence;
3) This is the official and major working mode machine at customer site.


B. Operating on I H Beam Assembly and Tack Welding Machine:

1. Operating Panel of I H Beam Assembly Machine:

1) As a kind of fully automatic I H Beam Welding Production Machine, all the working actions on I H Beam assembly and tack welding are manipulated by means of its operation pendant:
2) The above 1st photo and the 2nd photo are English Version and Russian Version respectively;
3) The function buttons on operating panel includes but not limited to: Power On/ Off; Oil Pump Station Start/ Off; CO2 Welding Velocity Selection and Display; Working Mode Selection/ Flange and Web Clamp or Release, etc.;
 

2. Operating Velocity Management in I H Beam Assembly and Tack Welding Machine:

1) There are 8 segments of sequences available for choice, based on H Beam flange and web thickness and welding technology;
2) Such selection is in the manner of switching among 8 optional output frequency section of the A.C. inverter;
3. The above 1st and 2nd Photos: The real time CO2 tack welding speed is displayed in machine operation panel;
4. The above 3rd Photo: Position of the 2 sets of 45° CO2 welding torch can be adjusted precisely by means of handwheel, together with oil cylinder drive slant sliding guided along precise linear rail;
 

5. Stitch Welding Seam Management in I H Beam Assembly Machine:

1) Under both working modes of Single Cycle and AUTO, length and interval of welding seam and no-welding segment can be set up in A.C. inverter and PLC;
2) This is very useful function for customers to determine their preferred finished workpiece, T Beam and H Beam, as shown in the above 4th Photo;
 

6. PLC of I H Beam Assembly and Tack Welding Machine:

PLC and its wiring on control board, inside Wuxi JACK I H Beam Assembly Machine electric cabinet: (Fig.2)
On January 8th 2026, when Cambodian customers had acceptance on their ordered 2 sets of Z15 model machine, the electric engineer of customer raised request on:
1) Share PLC password, to be able to access to PLC program and parameters when necessary;
2) Share PLC program, for the ease of upgrade in the future when needed.

Category and Main Specifications of Wuxi JACK I H Beam Assembly and Tack Welding Machine

Z Series I H Beam Assembly Machine

1. Classification on I H Beam Assembly and Tack Welding Machine:

1) Control Mode:
There are two main types of
a) Semi-Automatic: T Beam H Beam assembly is implemented with manual operation, it is rarely selected nowadays by year 2026;
b) Automatic: T Beam H Beam precise assembly is managed with PLC controller;
2) CO2 Welding Mode:
a) Automatic Welding: Performed with 2 sets of CO2 GMAW welding power supply and its control consoles;
b) Manual Welding: Performed by 2 welders who stand at both sides of machine output roller tables, it is also rarely selected nowadays by year 2026;

2. Model Selection in I H Beam Assembly Machine:

1) Financial Analysis: In this respect, although with 20% higher machine quotation, automatic mode saves 2 operators (Variable cost) than manual mode models;
2) Welding Quality: Besides, automatic stitch welding delivers far more stable and consistent welding seams on assembled T I H Beams than manual operation.

Application and Related Equipment of I H Beam Assembly Machine

1. Major I H Beam Welding Production Machine besides Assembly:

1) H Beam SAW Welding Machine, models: LHA and LHT in semi-automatic line, and LHC in fully automatic line;
2) H Beam Flange Straightening Machine, including:
a) Motor drive medium duty type, HYJ40 and HYJ800 models, for H Beam flange thickness up to 40mm, Q235 carbon steel;
b) Hydraulic drive heavy duty type, YTJ50/ YTJ60/ YTJ80/ YTJ100 models, for H Beam flange thickness up to 100mm, Q345 carbon steel;
c) H Beam Longitudinal Straightening Machine, (BOX Beam H Beam Horizontal Press Straightening Machine), HJ models, including HJ20/ HJ100/ HJ200/ HJ300;

 

2. Auxiliary I H Beam Welding Production Machine:

1) 1st Operation: CNC Strip Plate Cutting Machine, to cut out flanges and web for T Beam H Beam fabrication;
2) EOL (End of Line) Machine: H Beam End Face Milling Machine;
3) Automatic Labor Saving Logistics Unit: Steel Structure H Beam Overturning Equipment, Steel Conveyor;


3. Related Equipment: The start-of-art 3 in 1 H Beam Assembly Welding Straightening Integral Machine (H Beam Fabrication Machine), one set of machine produces small and medium sized welding H Beam;
4. T Beam Production: Besides, I H Beam Assembly Machine can also be applied in T Beam Production Line, serving as set of T Beam Assembly Machine.

Wuxi JACK Other Superior Quality I H Beam Welding Production Machine

CNC-CG4000 CNC Flame Cutting Machine with Strip Torches
HB1500 Automatic H Beam Production Line
LHC H Beam Welding Machine in Automatic Line
YTJ60 Hydraulic H Beam Straightening Machine on Flange
YF1520 Motorized Movable Hydraulic Drive H Beam 180° Turnover Machine
HYJ800 Motor Drive H Beam Straightening Machine- Flange
2 sets of DX1520 BOX Beam H Beam End Face Milling Machine being in test at Wuxi JACK workshop
HJ300 BOX Beam H Beam Horizontal Press Straightening Machine- Longitudinal

FAQ on Wuxi JACK I H Beam Assembly Machine with Tack Welding

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I H Beam Assembly and Tack Welding Machine Blogs

WUXI AMASS MACHINERY CO., LTD
WUXI JACK TECHNOLOGY CO., LTD
0510-83297829
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