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Steel Grating Welding Machine


 
Description of steel grating welding machine:
Steel grating welding machine line is comprised of gantry type welding machine, double-layer flat steel feeding device, cross bar auto falling device, steel grating hauling device, hydraulic & pneumatic system, cooling system, electric control system, etc.

Raw material for steel gratings:

Item Data
Suitable material Hot-roll steel or cold-roll steel
Bearing flat bar width 25-75mm
Bearing flat bar thickness 2.5-7mm
Cross bar round Diameter 4mm, 5mm, 6mm, 8mm
Wrung square bar 4x4mm, 5x5mm, 6x6mm, 8x8mm

Data of finished steel gratings:
Item Data
Size of finished steel gratings 1000 x 6000mm (W x L)
Space between flat bars 30, 40, 50, 60mm, adjustable
Space between cross bars 38-160mm, adjustable
Width tolerance Less than +/-3mm
Non-perpendicularity of bearing flat bar Less than 10% of bar width
Position deviation of cross bar Cross bar surface extrudes out of bearing bar surface not more than 1mm; Both ends of cross bar extrude out of the grating not more than 2mm
Deflection of cross bar end to center of grating Less than 3mm
Deflection of spaces between any two cross bar within 1500mm length Less than +/-5mm
Deflection in diagonal Less than +/-5mm in any 1000mm length

Technical data of steel grating welding machine:
Item Data
Electric supply 3phase, 380V, 50/60Hz
Rated welding power 6 x 100kVA
Transformer capacity needed for the workshop 630kVA
Rated current AC 600A
Min. working current AC 280A
Rated low temporary load 50%
Max. pressure 25kN
Max. pressing stroke for cross bar 50mm, adjustable
Weight of welding machine only About 4.5T
Cooling water-source needed 0.2MPa

Photo of steel gratings:

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