Wuxi JACK BOX Beam Production Line, Mature and Highly Efficient Turnkey Project of Various

BOX Beam Welding Machine and Supporting Equipment

Application of Wuxi JACK BOX Beam Production Machine

A. Finished Workpieces Fabricated from BOX Beam Assembly Machine and Others:

1. Welding BOX Beam has square shape cross section, with the best degree of overall integral intensity and mechanical strength. It is one of the most important workpieces being applied in Steel Structure field;
2. Applied Industry: BOX Beam are widely used for constructing high rise buildings/ Bridge construction etc. of large project. Correspondingly, BOX Beam Production Line is indispensable equipment group in Steel Structure/ Bridge/ Infrastructure for producing BOX Beam:
3. Welding BOX Beam manufactured from Wuxi JACK BOX Beam Production Line: (Fig.1)

Fig1 BOX Beam Production Line 4

4. Specifications of BOX Beam Fabricated from Wuxi JACK BOX Beam Production Line:

This is the professional machine group for producing welding BOX Beam with specifications of:
1) Cross section size of BOX Beam: 300 x 300mm to 1200 x 1200mm (BOX1200 model) or 1500 x 1500mm (BOX1500 model);
2) BOX Beam Length: 3000mm to 12000mm;
3) The max. weight of single piece of BOX Beam can be up to 20 Ton;
4) Welding BOX Beam being polished at EOL (End of line) station, by means of Wuxi JACK CNC-DX2020 CNC control H BOX Beam End Face Milling Machine: (Fig.2)

Fig2 CNC control BOX Beam End Face Milling Machine 5

B. Major BOX Beam Production Machines involved in the Production Process:

1. CNC Flame Cutting Machine: For cut off steel plates into narrow strips, serving as raw materials of next station BOX Beam assembly and tack welding;

2. BOX Beam Assembly Machine:

Depending on different stages and workpieces of welding BOX Beam production, there are 2 types of machines on BOX Beam assembly:
1) First step: Internal Baffle Plate and U Beam assembly:
a) 3D design of internal baffle plate assembly: (Fig.3)

Fig3 Baffle Plate and U Beam Assembly Machine 1

b) Actual finished workpieces of baffle plate assembly: (Fig.4)

Fig4 Baffle Plate and U Beam Assembly Machine 1C

2) Finished assembly: BOX Beam assembly with CO₂ tack welding:
a) 3D design of BOX Beam assembly: (Fig.5)

Fig5 U Beam Box Beam Assembly Machine 1C

b) Actual finished workpieces of BOX Beam assembly: (Fig.6)

Fig6 U Beam Box Beam Assembly Machine 1E

3. BOX Beam Welding Machine:

Depending on different stages and welding technology being adopted in welding BOX Beam production, there are 3 types of machines on BOX Beam welding:
1) BOX Beam Electroslag Welding Machine, for welding internal baffles of assembled U Beams:
a) Carry out electroslag welding on BOX Beam with Wuxi JACK machine: (Fig.7)

Fig7 BOX Beam Electroslag Welding Machine 5

b) Welding head unit of Wuxi JACK BOX Beam Electroslag Welding Machine: (Fig.8)

Fig8 BOX Beam Electroslag Welding Machine 1

2) BOX Beam CO₂ Back Welding Machine, for completing on primer welding on assembled BOX Beam:
Welding torch mechanism of Wuxi JACK BOX Beam Back Welding Machine by means of CO₂ gas shielded: (Fig.9)

Fig9 BOX Beam CO2 Back Welding Machine 1A

3) BOX Beam SAW Welding Machine, for fulfilling on finished Submerged arc welding on the assembled and back welded BOX Beam:
Having finished SAW welding on BOX Beam by means of advanced tandem arc SAW, in Wuxi JACK gantry form BOX Beam Welding Machine: (Fig.10)

Fig10 BOX Beam Welding Machine 3

4. BOX Beam Overturning Equipment Turntable:
Being deployed at different work stations of BOX Beam Production Line, and among these work stations, serving as manipulators for flipping and conveying BOX Beams within the scope of 0°- 60°/ 90°/ 180°, to get expected operating positions;
5. H BOX Beam End Face Milling Machine:
Being installed at EOL (End of line) station, for performing on end face milling on fabricated BOX Beam, so as to be qualified on subsequent painting and assembly.

C. Strong Points of Wuxi JACK BOX Beam Production Line:

1. Highly Efficient Fluent Process Flow among BOX Beam Production Machine:

1) Turnkey Project for Customer: The assistant work stations on BOX Beam production, including internal baffle plate manual welding/ CO₂ back welding/ cutting arc strike and riser in electroslag welding, IPV (Internal process validation) can all be prepared by Wuxi JACK for customer. Customer just need to prepare on workshop, layout and its utilities;
2) Fully Automation: Manual operation is reduced to the minimum level. Operators can be relieved from painstaking job of WIP (Work in process) movement, and hard to manage job of manual welding. Traveling crane is only used at U Beam assembly station, and finished BOX Beam being loaded offline from BOX Beam Production Line;
3) High Efficiency and Quality Promise: The entire line on BOX Beam production has controllable TAKT time and performance, eliminating all factors causing fluctuations on quality and productivity;
4) Saving Variable Cost: Correspondingly, number of operators on BOX Beam production can be far less than original manual production on BOX Beam;

2. Advanced Welding Technique Adopted at 3 Major BOX Beam Welding Machine:

a) Technical Difficulty: Due to the enclosed structure of BOX Beam, internal baffle plates are difficult to access for carrying on welding. Let alone guarantee efficiency and quality;
b) Our Solution: Wuxi JACK engineering team adopts series of advanced technique to solve the problem. Techniques on BOX Beam welding all take the lead in Welding Equipment Industry:
1) Internal Baffle plate welding to be implemented at BOX Beam Assembly Machine;

2) Two types of BOX Beam Electroslag Welding Machine:

a) Twin arc CO₂ gas shielded welding at BOX Beam back welding station;
b) consumable nozzle and welding electrode type electroslag welding;
c) Implement on electroslag welding on assembled BOX Beam during machine production at Wuxi JACK: (Fig.11)

Fig11 BOX Beam Electroslag Welding Machine 3

3) Tandem arc and triple arc SAW (submerged arc welding) at finished BOX Beam welding stations;

3. Welding Quality Assurance from Wuxi JACK BOX Beam Welding Machine:

1) Optimum Welding Orientation: By means of 90° and 180° motorized moving hydraulic drive overturning rack turntable, all the automatic and manual welding operations in are implemented in optimum position (Upright Downward Welding), guaranteeing the best degree of high standard welding quality, high productivity, and operator friendly ergonomics operation;
2) Welding torch orientation in of Wuxi JACK LHC12 model column trolley structure BOX Beam SAW Welding Machine: (Fig.12)

Major Machines of Wuxi JACK BOX Beam Production Line

Our Achievement: From March 2029 to today April of year 2026, Wuxi JACK has successfully designed, produced and delivered dozens of sets of machines on BOX Beam production, including assembly and welding, not only in the form of turnkey project of complete BOX Beam Production Line, but also in the form of individual BOX Beam Production Machine, according to customer practical condition and preference:

1. Various BOX Beam Assembly Machine:

GZ12 Internal Baffler Plate Assembly Machine

GZ15 BOX Beam Internal Baffle Plate Assembly Machine

UBZ12 model on U Beam BOX Beam assembly and CO₂tack welding

UBZ15 model on 1500mm height BOX Beam assembly and spot welding

Inquiry

2. Various BOX Beam Welding Machine:

XD15 Overhang Beam structure consumable nozzle type BOX Beam Electroslag Welding Machine

XQ12 Column Boom structure BOX Beam CO₂ Back Welding Machine

LHE12 Gantry structure BOX Beam SAW Welding Machine

LHC12 Column Trolley structure BOX Beam SAW Welding Machine

Inquiry

3. Other Support Equipment for BOX Beam Production Line:

CNC-CG4000 CNC Strip Flame Cutting Machine, for cutting out steel plates as BOX Beam webs, side plates, top cover and base plates

SXBJ-12 Double Heads Edge Milling Machine, for milling out welding groove in straight or slant angle, to acquire good welding quality

CNC-DX3030 CNC Control BOX H Beam End Face Milling Machine, for milling end face of fabricated BOX Beams, before subsequent painting and assembly

YF1520 Hydraulic drive BOX H Beam 180° Overturning Machine with moving wheels, for moving and flipping BOX at and among different work stations

Inquiry

4. Wuxi JACK BOX Beam SAW Welding Machine in Year 2026:

This year from January to today April, Wuxi JACK has delivered 2 times of machines on BOX Beam SAW welding, for 2 East European customers respectively:
1) Model LHC Triple Arc Submerged Arc welding, 8 sets, for welding BOX Beam up to 1500mm height, and 100mm thickness;
2) Model LHT Tandem Arc Submerged Arc welding, 1 set, for welding BOX Beam up to 1200mm height, and 80mm thickness:

Assembly on the 8 sets of LHC at Wuxi JACK workshop

At customer facility, tried on BOX Beam SAW welding

The finished SAW welded BOX Beam from LHC model BOX Beam Welding Machine

The tandem arc SAW welding on BOX Beam with LHT model machine

Inquiry

Produce High Quality Welding BOX Beam with Wuxi JACK BOX Beam Production Line

1. Design Sketch of Sample Welding BOX Beam from Wuxi JACK BOX Beam Production Machine:

Below is design print on the medium sized welding BOX Beam that can be produced by our line of BOX Beam Production Machine. This BOX Beam has specifications of:
1) Side length of square shape cross section: 500mm;
2) BOX Beam plates thickness: 30mm;
3) BOX Beam length: 600mm;
4) There are numerous internal baffle plates inside the BOX Beam to strengthen the entire pieces of BOX Beam, every 310mm length one piece of the internal baffle plate, by means of electroslag welding after BOX Beam assembly:

2. Process Technology and Involved BOX Beam Production Machine of BOX Beam Production Line:

Illustration on workpieces flow and major operation at stations of BOX Beam production:
a) Work Stations: There are totally 35 automatic and manual working stations in complete configured machine group on BOX Beam production;
b) Process Step: The 35 working stations on BOX Beam production can be divided into 14 major steps of:
1. 1^st Operation Plate Cutting: By means of CNC Strip Plate Cutting Machine, at steel plates cut off zone for susequent BOX Beam production. The cut out plates will be sent to assembly station by means of travel crane, or other support equipment;
2. Mark Line on Workpiece: Confirm position of internal Baffle plates and electroslag welding holes cutting;
3. Machining Welding Groove on Steel Plate: By means of Edge Milling Machine, for machining U/ V/ X 30° to 45° to 60° slant bevels on edges of steel plate, before the next station of BOX Beam Welding Machine. Benefitting from these around 45° slant bevel, the BOX Beam back CO₂ welding, SAW welding all have sufficient fusion of finished welding seam;
4. Internal Baffle Plate Assembly and Tack Welding Machine: These internal baffle plates serve as stffeners of BOX Beam. This machine works in semi-automatic fashion;
5. Tack Welding on Internal Baffle Plates onto Web: This is completed at conveyor of BOX Beam Assembly Machine;
6. U Beam BOX Beam Assembly Machine：By this time and station, BOX Beam comes into being initially, will be turned into finished workpieces by means of subsequent welding stations;
7. 90° Overturn of Assembled U Beam：This is acquired with motor drive moving 180° Overturning Equipment turntable, at assembly zone of the production line;
8. Assembly Top Cover onto BOX Beam: This is performed with BOX Beam Assembly Machine at assembly zone of the production line, producing finished assembled BOX Beam;
9. 90° Turning of Assembled BOX Beam：This is carried out by means of motor drive moving 180° Overturning Rack turntable, at assembly area of the BOX Beam Production Line;
10. BOX Beam CO₂ Back Welding Machine: This fulfils the 1st step of BOX Beam welding;
11. Internal Baffle Electroslag Welding: This is implemented with cantilever structure BOX Beam Electroslag Welding Machine. There are 2 types of electroslag welding differed on welding consumables, either with consumable type or wire electrode type;
12. Assembled and Back Welded BOX Beam being Sent to Submerged Arc Welding Station：This is carried out with motor drive moving 180° Flipping Equipment turntable;
13. BOX Beam Finished Submerged Arc Welding：By means of LHC model column trolley structure, or LHE model gantry frame structure BOX Beam SAW Welding Machine, at SAW welding Area of BOX Beam Production Line;
14. BOX Beam End Face Milling：This is carried out with BOX Beam End Face Milling Machine, model DX1520 to large ones of DX3030.

3. Layout of Wuxi JACK BOX Beam Welding Machine:

Below is design print on simplified and typical layout of Wuxi JACK BOX Beam Production Line, on the basis of the above introduced process technology. As can be seen from the layout drawing,
1) Land occupation: The line takes workshop floor area of: 133m length x 24m width = 3192 m²;
2) Primary Work Stations and Machines: In sequence of material flow (From right to left),
a) CNC-CG4000 CNC Flame Plasma Cutting Machine, for carbon steel plate flame cutting off;
b) GZ12/ GZ15 Internal Baffle Plate Assembly and Tack Welding Machine;
c) UBZ12/ UBZ15 U Beam and BOX Beam Assembly Machine;
d) XD12 / XSD15 Internal Baffle Plate Electroslag Welding Machine;
e) YF1220 / YD1520 Motor drive moving hydraulic drive BOX Beam 180° Turnover Machine;
f) LHE12/ LHE15 gantry frame structure tandem arc BOX Beam SAW Welding Machine as finished welding;
g) DX1520 BOX Beam End Face Milling Machine, with or without CNC control

List and Brief on Wuxi JACK Main BOX Beam Production Machine

1. GZ12/ GZ15 BOX Beam Internal Baffle Plate Assembly Machine:

1. Function of BOX Beam Internal Baffle Plate Assembly Machine:

1) Task and Structure: This machine is for assembling and welding internal baffles, which will be assembled and welded to internal of BOX Beam at subsequent stations of BOX Beam Production Line. As shown in the above photos, this machine looks like and has similar operating type of Welding Fixture;
2) Internal Baffle Plate: The design sketch and photo of finished internal baffle plates produced from the machine, is shown in the above 3^rd and 4^th photos;
3) Models: There are two applicable models of the machine: GZ12 and GZ15, corresponding with 1200mm and 1500mm side size BOX Beam respectively;
4) Quantity of the Machine: There is 1 set of the machine necessary in welding BOX Beam Production Line;

2. Work Principle of BOX Beam Internal Baffle Plate Assembly Machine:

1) Work Mode: The machine works in semi-automatic way. Workpiece (Internal baffle plates) need to be placed onto the machine rack, and secured by means of manual operation. Design of the rack is similar to Welding Fixture, which makes sure correct positioning of the internal baffle plates;
2) Automatic Flipping: This machine has rotating range of ±180°, which is driven with braking type A.C. motor. So, workpiece can be locked at any angular position reliably;
3) Workpiece Secure: Upon arriving at target angular position, the internal baffle plate is secured firmly, by means of air cylinders onto the flipping rack of the machine;
4) Fit Up and Welding: Next, internal baffle plate is welded manually in the machine.

3. Technical Parameters of GZ12/ GZ15 Internal Baffle Plate BOX Beam Assembly Machine:

Model	GZ12/ GZ15
BOX Beam Cross Section Size H × W	300 × 300 – 1200 × 1200 mm 300 × 300 – 1500 × 1500 mm
BOX Beam Length	3000 - 12000 mm
Max. Weight of BOX Beam	20 Ton
Internal Baffle Plate Thickness	≤80 mm
Internal Baffle Plate Flip Motor Power	0.75 - 2 kW
Internal Baffle Plate Flip Speed	1 - 1.8 rpm
Loading Capacity of Work Table	1200 - 1500 kg
Height of Flip Center	1000 - 1200 mm
Flip Range of Work Table	±180°

2. UBZ12 / UBZ15 U Beam BOX Beam Assembly Machine:

1. Usage of UBZ12 / UBZ15 U Beam BOX Beam Assembly Machine:

Function: This machine assembles 4 pieces of BOX beam board (Web) and 4 pieces of internal baffle plates into a piece of integral assembled and tack welded BOX Beam: First U Beam, then BOX Beam;

2. Process Route of BOX Beam and Internal Baffle Plates Assembly Machine:

1) Step 1: 1 piece of base plate and 4 pieces of erected internal baffle plates are assembled into a stiffener plate unit;
2) Step 2: 2 pieces of longitudinal lateral plates to be assembled onto the workpiece, assembled into U Beam;
3) Step 3: The cover plate is then assembled onto workpiece in process of U Beam assembly;
4) Step 4: Assembled into a piece of finished BOX Beam;
In this way, the 4 pieces of webs and 4 pieces of internal baffle plates can be assembled and tack welded into U Beam, then into BOX Beam:

3. Technical Features of U Beam BOX Beam Assembly Machine:

1) Workpieces Variation: 4 pieces of Webs and 4 pieces of internal baffles respectively → 1 piece of U Beam → 1 piece of assembled BOX Beam;
2) Work Principle: The workpiece is assembled and tack welded during its moving through the machine. It is secured in 2 points of top downward and lateral pressing, driven with hydraulic oil cylinders;
3) Moving rails of workpieces are heavy duty 38kg/m type, to promise stable movement of heavy BOX Beam;
4) Assembly Precision Guarantee: There is high strength pulling rod system equipped in the machine, of downward orientation, guaranteeing precise assembly of U Beam and BOX Beam;
5) Machine Quantity: There is 1 set of the UBZ12/ UBZ15 model BOX Beam Assembly Machine to be deployed in BOX Beam Production Line.

4. Technical Parameters of UBZ12 / UBZ15 U Beam BOX Beam Assembly Machine:

Model	UBZ12, UBZ15
Cross Section Size of Assembled BOX Beam	300ｘ300 - 1200ｘ1200 mm/ 1500ｘ1500 mm
Length of BOX Beam	4000 – 15000 mm
Max. Weight of BOX Beam	20 Ton
BOX Beam Assembly and Tack Welding Speed	400- 4000 mm/ min., controlled with A.C. inverter
Gantry Move Speed (Idle Movement)	4000 mm/ min.; 6000 mm/ min.
BOX Beam Sending Speed on Conveyor	9300 mm/ min.
Hydraulic Pressure	14 MPa
Max. Pressure of Sideward Stroke Cylinders	15 Ton
Max. Pressure of Downward Stroke Cylinder	30 Ton
Max. Stroke of Sideward Cylinders	800 mm
Max. Stroke of Downward Cylinders	900 mm
Elevation Stroke of Left and Right Press Cylinder	1000 mm
Power of Gantry Move Motor	0.85 / 1.1 kW x 2
Hydraulic Oil Pump Motor of U Beam BOX Beam Assembly Machine	11 kW

3. YF1220 / YF1520 Hydraulic Drive BOX Beam 180° Overturning Rack Turntable:

1. Usage of Movable Hydraulic Drive BOX Beam 180° Overturning Rack Turntable:

1) Role: YF1220 / YF1520 motor drive moving Hydraulic drive BOX Beam 180° Overturning Rack is supplementary logistics equipment in BOX Beam Production Line. It has 2 purposes: Accomplish 90°/ 180° flipping of BOX Beam, and transferring BOX Beam among work stations in the line;
2) Working Way: The 180° Flipping Rack turntable works in the form of 2 sets per group, to overturn and support the entire piece of BOX beam effectively and reliably;
3) Drive Way: Flipping of BOX Beam is driven with hydraulic oil cylinder; Movement of BOX Beam is driven with A.C. motor reducer;
4) Quantity of the Equipment: There are 4 sets (Or, 2 groups) of 180° Flipping Rack turntable deployed in BOX Beam Production Line.

2. Technical Parameters of YF1520 Motorized Moving Hydraulic Drive BOX Beam 180° Flipping Rack Turntable:

Model	YF1520
Max. Weight of BOX Beam	20 Ton
Power of Moving Motor Reducer	1.5 kW
Flipping Rack Turntable Moving Speed	5000 mm/min.
Diameter of BOX Beam Flipping Drive Cylinder	Φ150 mm
Max. Hydraulic Pressure	16 MPa
Rail Center Span of Moving Racks	700 mm
BOX Beam Overturning Range	±180°

4. XQ12 /XQ15 BOX Beam Welding Machine for Back:

1. Usage and Operation on BOX Beam Back Welding Machine:

1) Function: This machine performs the 1^st step of BOX Beam welding (Totally 3 steps: CO₂ back welding, electroslag welding, finished SAW welding): Twin Arc CO₂ back welding on assembled BOX Beam, which is fabricated from the previous station of BOX Beam Assembly Machine;
2) Structure: As shown in the above photo, this machine has structure of motorized moving trolley, being installed with 2 pieces of welding torch onto its overhead beam;

3) Work Way of XQ12/ XQ15 BOX Beam Back Welding Machine:

a) Welding Mode and Major Steps:
i. The BOX Beam is laid onto conveyor of the machine;
ii. Machine conveyor sends BOX Beam forward in adjustable welding speed, which is controlled with A.C. inverter, implementing Twin Arc CO₂ back welding at the same time;
b) Welding Position Management: Welding torch carriage can be adjusted on its position along vertical/ transverse direction along boom of the moving trolley, based on size of BOX Beam. This is for guaranteeing always accurate position of welding tip onto BOX Beam;
c) Welding Seam Track Unit: During work of the BOX Beam Back Welding Machine, position of welding torch is always traced and adjusted by means of the mechanical style arc guiding seam track unit. This is also for guaranteeing always accurate position of welding tip, so as to promise top grade welding quality;

4) Quantity of BOX Back Beam Welding Machine and Welding System:

a) In BOX Beam Production Line, there are 2 sets of XQ12/ XQ15 model machines, for performing on back welding at both lateral sides of BOX Beam simultaneously;
b) One set of XQ12/ XQ15 machine is equipped with 2 sets of twin arc CO₂welding power supply respectively.

2. Technical Parameters of XQ12/ XQ15 BOX Beam Back Welding Machine:

Model	XQ12/ XQ15
Cross Section Size of BOX Beam	300ｘ300 - 1200ｘ1200 mm / 1500ｘ1500 mm
BOX Beam Length	4000 – 15000 mm
CO₂ Backing Welding Speed	240 - 2400 mm/min., controlled with A.C. inverter
Idle Sending Speed on BOX Beam	3000 mm/min.

5. BOX Beam Welding Machine with Electroslag:

1. Usage and Technical Characteristics of BOX Beam Electroslag Welding Machine:

1) Function: In process route of BOX Beam Production Line, electroslag welding is for completing on final welding of internal baffles plates into the assembled BOX Beam. The preceding station is BOX Beam Assembly Machine: Assembly and tack welding internal baffles plates into BOX Beam;

2) Classification on BOX Beam Electroslag Welding Machine:

From perspective of technology, there are two types of electroslag welding: Consumable nozzle type, and non-consumable wire electrode type:
a) Consumable nozzle type electroslag welding:

b) Non-consumable wire electrode type electroslag welding:

3) Technical and Running Specialties of Two Types BOX Beam Electroslag Welding Machine:

a) Consumable nozzle type electroslag welding works in the way of consuming welding nozzle. It has lower machine price and relative higher running cost;
b) Non-consumable wire electrode type has relative higher machine price and lower running cost;
4) Advantages of the Machine: Welding Quality: For carrying out electroslag welding on BOX Beam, cutting holes are cut out ahead of time at preceding stations. So that the quality issue of cutting fluid staying in the hole which bring negative effect can be removed, promising the best degree of welding performance;
5) Machine Model: Consumable nozzle type BOX Beam Electroslag Welding Machine has 2 models of XD12 and XD15; Non-consumable wire electrode type machine has single model of XSD12;
6) Machine Quantity: In BOX Beam Production Line, there are 2 sets of BOX Electroslag Beam Welding Machine, for fulfilling internal baffles plates of BOX Beam at both sides simultaneously.

2. Technical Parameters of BOX Beam Electroslag Welding Machine:

Model	XD12 / XD15 / XSD12
Cross Section Size of BOX Beam	300ｘ300 – (1200ｘ1200mm/ 1500ｘ1500mm/ 1200ｘ1200mm)
BOX Beam Length	4000 - 15000 mm
Trolley Rail Span	1,000 mm
Trolley Moving Speed	6000 mm/min.
Trolley Moving Motor Power	0.55 / 0.75/ 0.55 kW

6. BOX Beam Welding Machine with SAW Technology:

1. Usage and Role of BOX Beam SAW Welding Machine:

1) Function and Welding Mode: This machine performs twin arc or triple arc submerged arc welding on the half finished BOX Beam: Assembled, tack welded, back welded, and electroslag welded in the previous stations of BOX Beam Production Machines on assembly, welding, and turnover respectively;
2) Classification: Based on structure of the machine mechanical main frame, there are 2 major types of BOX Beam Welding Machine with submerged arc welding: LHE12/ LHE15 models Gantry structure, and LHC12/ LHC15 models Cantilever (Column trolley) structure;

3) Work Way of BOX Beam SAW Welding Machine:

LHE12/ LHE15 and LHC12 / LHC15 models machines operate in the same work way:
a) BOX Beam is put in stationary onto conveyor of the machine;
b) SAW Welding Operation: Mechanical main frame of gantry or cantilever trolley moves in adjustable welding speed, performing twin arc or triple arc SAW (Submerged arc welding) at the same time on workpiece: BOX Beam;
4) Welding Quality Control: During work, welding torch is controlled with air cylinder drive mechanical style welding seam track unit, guaranteeing on superior and stable welding quality and productivity on BOX Beam production;

5) Operating Nature of BOX Beam SAW Welding Machine:

a) LHE12 / LHE15 gantry structure model BOX Beam Welding Machine has very similar mechanical structure and working principle as H Beam Gantry Welding Machine;
b) LHC12 / LHC15 models cantilever (Column trolley) structure models machine can be replaced as column structure H Beam Welding Machine, which are deployed 4 sets in a group in automatic H Beam Production Line;
6) Machine Quantity: In BOX Beam Production Line, there are:
a) Either 2 sets of LHE models gantry structure machine;
b) Or 4 sets of LHC models cantilever structure BOX Beam SAW Welding Machine.

2. Technical Parameters of BOX Beam Welding Machine with SAW Technology:

Model	LHE12, LHE15 / LHC12, LHC15
Mechanical Main Frame Structure	LHE: Motor drive moving gantry LHC: Motor drive moving trolley and Boom
Cross Section Size of BOX Beam	300ｘ300 - 1200ｘ1200 mm / 1500ｘ1500 mm
Length of BOX Beam	4000 - 15000 mm
Welding Mode	Tandem arc or Triple arc SAW, Welding wire Φ4.2mm – Φ5.0mm
Length of Gantry Moving Rail	18,000 mm
Gantry Moving Rail Span	1400 mm
Gantry Moving Stroke	15,500 mm
Submerged Arc Welding Speed	150 - 1500 mm/min., controlled with A.C. inverter
Gantry Idle Moving High Speed	2400 mm/min.
Gas Pressure for Mechanical form Welding Torch Track Unit	0.4 - 0.8 MPa
Power of SAW Welding Flux Recovery Unit	2 x 3 kW
Power of BOX Beam SAW Welding Machine	3 kW

Application and Related Equipment of BOX Beam Production Line

1. Application Field: As high strength steel structure raw materials made from complicated process technology, BOX Beam is widely applied in Steel Structure Industry / Bridge/ Offshore derrick/ Port Machinery, producing welding BOX Beams as workpieces for big construction;
2. Other 2 Common Seen Steel Structure Production Lines:
1) H Beam Welding Production Line;
2) T Beam Welding Production Line;

3. Other Necessary BOX Beam Production Machine:

In the sequence of process technology on BOX Beam production:
1) CNC-CG series CNC Strip Flame Plasma Cutting Machine;
2) XBJ series single or double heads steel plate Edge Milling Machine;
3) YF series Hydraulic drive H Beam BOX Beam 90° or 180° Overturning Rack Turntable;
4) Hydraulic drive H Beam BOX Beam lifting and sending machines;
5) Steel Structure Conveyor;
6) H Beam and BOX Beam End Face Milling Machine.
Below are the some of the above listed machines delivered by Wuxi JACK from March 2009 to today April year 2026:

MP20 Steel Plate Butt Joint Welding Machine

CNC-CG4000 CNC Plasma Flame Cutting Machine

SXBJ18 Double Heads Long Stroke Edge Milling Machine

YF1520 Motorized Moving Hydraulic Drive BOX H Beam 180° Turnover Machine

TSW30 T Beam CO₂ Welding Machine

HB1500 Automatic H Beam Production Line at East Europe

CNC-DX3030 CNC Control BOX H Beam End Face Milling Machine

Hydraulic drive H Beam BOX Beam Lifting and Sending Machines (Steel Conveyor)

Other Series of Products We Own besides BOX Beam Production Line

General Purpose Automatic Lengthwise ASM63 Angle Steel Straightening Machine

Special Size And Custom Made PHJ/ZHJ Automatic I Beam Welding Machine

ZHJ10 Special Made Automatic 3 in 1 I H Beam Welding Machine

Fit Up Full PHJ ZHJ H Beam Assembly Welding Straightening Integral Machine

Steel Column Member Use DX1520 End Face Milling Machine

Medium Large DX3030 Steel Structure End Face Milling Machine

HMI Control Advanced Function SXBJ-12 Large Edge Milling Machine

Pair Heads SXBJ-18 Large Size Plate Edge Milling Machine

MP20 To MP50 Sheet Metal Steel Plate Butt Joint Welding Machine

6 And 7 Axis CNC-CP6/7-2000~3000/L CNC Large Pipe Cutting Machine

5 Axis CNC-CP5-1400/L Classical Medium Size CNC Pipe Cutting Machine

Z30 Heavy Duty Large I H Beam Assembly Machine

Manual Assembling And Automatic Welding Z18 I Beam Assembly Machine

Middle Size 1800mm Height Semi-Automatic Welded H Beam Production Machine Line

HB-series High Quality Automatic Welding H Beam Production Line

LHA4Z/LHA5Z/LHA55Z Center Management I H Beam Gantry Welding Machine

LHT T Frame BOX Beam H Beam SAW Welding Machine

Vertical Position YTJ40 Hydraulic I Beam Flange Straightening Machine

High Efficiency Hydraulic Drive YTJ-50 I Beam Straightening Machine

Heavy Duty Thick Thickness YTJ-80 I Beam Straightening Machine

Blogs of Wuxi JACK BOX Beam Production Machine

Process Technology of BOX Beam Production Line
1. Overview on BOX Beam Production Line: 2. Definition on BOX Beam Production Line: 3. Process Technology of BOX Beam Production Line and its Challenge: 4. Summary on BOX Beam Production Line: Read More
Technical Analysis on Steel Structure Overturning Equipment
1. Brief on this Article on Steel Structure Overturning Equipment: 2. Demand on Steel Structure Flipping Equipment: 3. Classification on Steel Structure Overturning Equipment: 4. Characteristics and Design of Steel Structure Flipping Equipment: 5. Apply of Steel Structure Overturning Equipment: Read More
Technical Specialty of T Beam Production Line
Characteristics of T Beam and T Beam 3 in 1 Production Line; Shipbuilding Use T Beam and T Beam Production Line; Steel Structure Use T Beam and T Beam Welding Machine; Process Technology and Technical Specialty of T Beam Production Line; Cost Effective Single Equipment 3 in 1 T Beam Fabrication Machine; Summary on Wuxi JACK T Beam Production Line Read More