Below is one example of Wuxi JACK Welding Center business case, completed in May 2026:
A. Customer: A semi-trailer manufacturer located in Middle East;
B. Task: Welding an LPG tankers and Stainless steel chemical tankers;
C. Customer Requirement on Welding Center:
1. LPG Tanker General Data on Column Boom Welding Manipulator Machine and Welding Roller Rotator:
1) Material of pipe: P355NL1 thickness 10- 18 mm
2) Pipe length: Up to 18,000mm
3) Pipe diameter: Φ1,500mm- Φ3,000mm
4) Max. empty weight of pipe: 25 tons
5) Welding method: Submerge arc welding, with Φ3.2mm -Φ4mm wire diameter;
6) Finished joint welding seam: Single V @60° butt joint with 2- 3mm space;
2. SST Tankers General Data on Column Boom Welding Manipulator Machine and Welding Roller Rotator:
1) Material of pipe: SST 2205-304L- 316L thickness 4- 10mm
2) Pipe length: Up to 13000mm
3) Pipe diameter: Φ1,500mm -Φ3,000mm
4) Max empty wight of pipe: 12 Tons
5) Welding method: MIG - flux cord wire Φ1.2mm diameter;
6) Finished joint welding seam: Square butt joint 2- 3mm space;
3. Important note: System should be able to weld on longitudinal and circumferential seems, internal and external;
D. Technical Brief on (LHZ4055 + HGZ20) Welding Center:
1. LHZ4055 Column and Boom Welding Manipulator,
1) Quantity: 1 set,
2) Structure: Fixed base, with column revolve ±180°;
3) Welding Technology: With both SAW and MIG welding systems, to be able to weld on tankers with materials: P355NL1, SST 2205-304L- 316L, aluminum;
4) SAW welding power source: AOTAI 1250A single arc;
5) MIG welding power source: MEGMEET made DEX2 500MQ PLUS, which can be used to welding on Stainless steel and aluminum. Welding wire can be both solid and cored flux wires;
6) The switch between SAW and MIG is by means of manual take off and assembly on site;
2. HGZ20 Motorized Moving Automatic Self-Adjust Welding Roller Rotator:
Quantity: 2 groups, with 1 set of drive and 1 set of follower Welding Roller Bed/ Group;
E. Welding Machinery of (LHZ4055 + HGZ20) Welding Center:
1. Column Boom Welding Manipulator Machine:

Model LHZ4055, 1 set:
Type: Fixed base, with column revolve ±180° and locked by manual
Vertical Stroke: 4,000mm
Horizontal Stroke: 5,500mm
Tanker Diameter: Φ1,500- Φ3,000mm
Max. Length of Tanker: 5,000mm
Tanker Wall Thickness: 10- 18mm under SAW, and 4- 10mm under MIG
Tanker Material: P355NL1 under SAW, and SST 2205-304L- 316L/ aluminum under plus MIG
LPG Tanker Max. Weight: 25 tons under SAW, and 12 tons under MIG
Heavy duty mechanical construction in LHZ4055 Column Boom Welding Manipulator Machine:
1) Larger dimension and rigidity of horizontal Boom and upright column;
2) Larger cross roll bearing;
3) Heavy duty rectangular guiderails on horizontal boom and upright column;
Horizontal Boom anti-deflection design:
1) Larger dimension and rigidity of horizontal Boom and upright column;
2) With eccentric roller;
Anti-fall safety mechanism:
1) Row of rectangular holes on upright, pawl at saddle;
2) Brake type motor for driving elevation of horizontal boom;
Applicable for longitudinal and circumferential Welding on internal and external shells of tankers
Adjustable Welding Speed: 100- 1000mm/min., controlled with Mitsubishi or Scheider A.C. inverter
Horizontal boom elevation speed: Constant 1200mm/min.
Heavy duty High Precision Rectangular Guiderail on Horizontal Boom and Upright Column
With high precision cross slides for adjusting welding torch, 150mm x 150mm stroke in horizontal and vertical direction
Boom end loading capacity: ≥150kg
Welding Power Source equipped with Column Boom Welding Manipulator Machine:
1) 1 set of AOTAI 1250A single arc SAW welding machine, and
2) 1 set of MEGMEET made DEX2 500MQ PLUS MIG welding machine, with water cooling torch and tank, use cored flux and solid welding wire;
Welding Seam Tracker: 1 set of ED-ST10
Oscillator: 1 set of Shanghai ETON AOC-801
Video monitor: 1 set
With laser indicator on welding seam
With 1 set of 100kg capacity welding flux sending and reuse machine
Integrated electric interlink control on HGZ20 with LHZ4055, controlled with Siemens PLC;
2. HGZ20 Self-Adjust Automatic Welding Roller Rotator:
Max. Loading Capacity: 20,000kg
Shell Diameter Range: Φ450- Φ3,500 mm
Way of Adjusting Turning Roller Span: Automatic Adjustment
Welding Turning Roller Bed: Motorized moving, speed 6,000mm/min.
Turning Roller Revolve Linear Speed: 100- 1,000 mm/min., A.C. inverter (Mitsubishi or Schneider brand)
Quantity of Turning Rollers Bed per Group Welding Roller Rotator: One drive, the other follower
Control: Wired remote control
Material and Dimension of Welding Turning Roller (D x T): Internal steel diameter Φ344x width 30mm, external PU (Polyurethane), diameter Φ350x width 120mm
Dimension of Drive Section Welding Roller Bed (L x W x H): 2175 x 860 x 860mm
Dimension of Follower Section Welding Roller Bed (L x W x H): 1750 x 580 x 860mm
Total Weight: 2.22 Ton/ Group
Power Consumption: 1.5kWx 2/ Group of Welding Roller Rotator