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Gantry automat GWU Builder

Machine is suitable for working in heavy industry, especially by welding of tanks of different types in the mode of 7/24. The whole unit is suitable for welding pressure and non-pressure high capacity tanks. Wide range of options and advanced digital technologies which are easy to operate for SAW, MAG, TIG, PLASMA WELD methods of welding and KEY HOLE proces.


This is a special solution which is provided only as custom made. Due to the complexity of the whole system and its parts very thorough consultation of requirements is always necessary. The final technical solution and possible feasibility of the project is provided as special project solution and always exactly based to the parameters of the required products, specific applications or the customer production program.



  • GWU BUILDER is sophisticated industrial production unit for circumferential and longitudinal welding of high capacity tanks with maximal diameter up to 6000mm. Lenght can reach 25000mm. Weight of welded product is depended on the choice of roller positioners or assembling line

  • Mechanical construction of the machine is spacial and consists of two massive towers (GANTRY). Bases of both towers are a bit wider and therefore are stable and used as a platform for placing the generators up to 500Kgs. Right tower is equipped with ergonomic place for the operator which is protected against the fall of welded part by special frame. The whole system of both towers is movable along the rails, synchronized motors with maximal speed of 4,0m/min are used. Between both towers there is heighly adjustable portal of aluminium construction by which one or two torch heads are carried.

  • Torch heads are precise set for the mechanical point of view by which micromovement axises X and Z are integrated and in case of MAG method also the pendel unit. Both axises (X+Z) can be moved in the range of +/- 150mm in each direction, pendel unit 20mm for each side. Considering the fact which welding technology is used another suitable options are added to basic configuration. Feeders and coils of the wire are integral part of the support as well as the systems of recycling and adding the flux.

  • GANTRY BUILDER can be connected with roller positioners CARRIER and build sophisticated production complex of the highest technological level.

  • On the system digital industrial camera IRIS NICK can be mounted by which the focused shot of the place where is the welding performed is taken. This camera is suitable for any method of welding, including MAG PULSE method, and quarantees great results. Another camera is recording the whole working place from the top and enables the operator to find the most optimal welding position.

  • Control system is based on industrial computer (Windows platform) by which the visualization of advanced user interface HST CREATIVE is arranged and seen on 19“ display equipped with reliable Touch screen technology with glass surface. Controlling of modes by touchscreen, proportional digital joystick, context offer, use of touch commands, digital system of automatic control of welding position by touch sonde.




Main benefits

√  Sturdy construction of two towers without material flickers brought into the process of welding, mechanical defects of welding are eliminated

 Small dimensions of floor projection because of the compact solution of construction and small requirements for the space on the workshop

  Possibility of two technologies at the same time (for example MAG + SAW)

  Movement of the machine along the rails that means that the unit changes its position for longitudinal welding

 Micro movement axises without pressure with accuracy of positioning of 0,2mm, technical parameters of welding displayed on the display

 Precise positioning of 0,1mm by the operator by proportional joystick or system of controlling the welding position by touch sonde

 High – tech industrial computer system of welding process controlling through the touchscreen display and controlling by commands

√  Recording of welding process by digital camera which is complemented by another camera placed above working place

 Safety stand of operator in covered moveable working station




Progress speed of the cylinder placed on pulleys *

 0,74 - 369,0 cm/min

Torque on shaft of roller positioners *

Based on the type of positioner

Speed of movement of the machine along the pulleys (Y axis)

  0,5 - 450,0 cm/min

Movement of the torch head (X axis) *

0,01 - 200,0 cm/min

Vertical movement of the torch head (Z axis)

0,01 - 150,0 cm/min

Horizontal movement of the torch head (C axis)

0,01 - 150,0 cm/min

Pendel of the torch *

+/- 20 mm

Maximal loading of the torch head by components of welding technoloqies

130 Kgs

Maximal loading of pendel head by welding torch

5 Kgs

Duty cycle **



Maximal diameter of welded cylinder up to 6000,0 mm
Minimal diameter of welded cylinder (special adjustments on request*) 1350,0 (800,0) mm
Maximal efective lenght of the movement along pulleys 25000,0 mm
Stroke of the central portal 2270,0 mm
Rotation of roller positoners (HST CREATIVE CARRIER) Controlled axis
Movement of the machine along pulleys  (Y axis) Controlled axis
Stroke of the portal (L axis) * 2270,0mm, controlled axis
Movement of the torch head along the portal (X axis) * 1850,0mm, controlled axis
Vertical movement of the torch head (Z axis)  +/- 150mm, controlled axis
Horizontal movement of the torch head (C axis)  +/- 150mm, controlled axis
Rotary movement of the torch head (R axis)  90°, manual axis
Pendel of the torch  +/- 20,0mmcontrolled axis
Suitable methods of welding SAW, MIG/MAG, TIG, Plasma Weld
Maximal amount of welding heads 2
Flux suction for SAW method with automatic fuction * Yes
Warning of running out of flux for SAW method* Yes
Camera system for direct view into the weld * Unlimited
Connection of  welding device through START/STOP system Yes
Feeding of the wire controlled by program * Yes
Fixed digital lever in the place of controlling  Proportional
Remote control * Yes
Power supply 3x400V 50/60 Hz
Pressure air (dry, clean) 0,5 - 0,7MPa
Design  Moveable along pulleys
Level IP IP 51 C
Output needed for installation ***
Height ***
Width ***
Depth ***
Net value ***


* Optional item, or more versions are available which differs according to function. Mentioned parameters are valid for maximal options.

** 8/5 = lower loading in one duty period /// 16/6 = industrial loading /// 24/7 = non - stop loading

*** Parameters can not be provided with 100% correctness. Configuration of the machine must be taken into consideration. Mentioned parameters are valid for reaching maximal effective value.


...Subject to change the technical parameters without notice.