Our Achievement: In year 2025 and 2026, Wuxi JACK produced 3 sets of Z30 large models I H Beam Assembly and Tack Welding Machine for customers in India, Middle East, and South America. Customers come from Energy, Steel Structure, Bridge Construction. This is milestone of Wuxi JACK for delivering large models I H Beam Assembly Machine to customers. Summing up, there are several technical special points:
1) Length of input and output conveyor roller table: Large cross section H Beam usually also has longer lengths. So, Z30 model usually is equipped with 4 segments of 2.6m roller tables each, for input and output conveyors;
a) Automatic or Manual Welding? The Z30 model finished production and had FAT (Factory acceptance test) by customer engineers in August 2026 is not automatic CO2 tack welding;
b) This is because that, size of H Beam is very large, especially thickness of flange (80mm) and web (70mm). If adopt automatic welding, sometimes fully penetrated welding seam can not be acquired, and often to be neglected. Under such cases, need operator to make adjustment and have touch- up welding. In this respect, manual tack welding is more applicable for large model I H Beam Assembly Machine;
There are also large changes with machine structure, when H Beam web assembly height is increased from 2,000mm to 3,000mm. The 2 typical modifications are:
I, Downward press beam:
Comparison on main frame front view of Z15- Z20 conventional (Left), versus Z28- Z30 large model (Right) I H Beam Assembly and Tack Welding Machine (Taken in August 2026): (Fig.4, 5)
a) As can be seen from the above 2 photos, in conventional Z15- Z20 model, there is only 1 piece of downward press beam inside upper gantry, to fit on H Beam web height up to 1500mm/ 1800mm/ 2000mm;
b) In Z28- Z30 large models, there 2 pieces of downward press beam in series. The bottom one is for pressing against top surface of H Beam upper flange, same function as in conventional models I H Beam Assembly Machine; The top one is for fitting on 3 grades of H Beam web height: 1500mm, 2000mm, 3000mm. The switch among these 3 grades is by means of travel crane, and manual fixation;
II, External brace:
Comparison on main frame lateral view of Z15- Z20 conventional (Left) versus Z28- Z30 large model (Right) I H Beam Assembly and Tack Welding Machine (Taken in August 2026): (Fig.6, 7)
a) As can be seen from the above 2 photos, in conventional Z15- Z20 model, the upper gantry itself can be maintained upright position with sufficient strength and integrity, without external support;
b) In Z28- Z30 large models, because of large height (6m) of main machine, need 2 pieces of 45° slant braces, to help maintaining upright of Z30 main machine;
| 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 |
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) 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.
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;
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.
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;
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.