Metal Galvanized Steel Closed type Inter Lock Dovetail Metal Floor Deck Roll Forming Machine is a cold bending equipment specifically used for producing “tapered” or “dovetail” floor support plates. Its core is to process galvanized steel plates into unique dovetail sections through precision rolling, so that the plates have stronger shear resistance and fire resistance when combined with concrete. This type of equipment is widely used in steel structure factories, high-rise office buildings, and large public buildings, which can significantly shorten the construction period and improve the overall safety of floor slabs.
Product Attributes :
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1.Formed Material
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Thickness
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0.7-1.5mm Width:as request
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2.Decoiler
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Hydraulic automatic decoiler
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will give you as free
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3.Main body
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Roller station
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24 rows(As your requirement)
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Diameter of shaft
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90mm solid shaft
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Material of rollers
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45# steel, hard chrome plated on the surface
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Machine body frame
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400 H steel
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Drive
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Gearbox transmission
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Dimension(L*W*H)
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customize
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Weight
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13T
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4.Cutter
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Automatic
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cr12mov material, no scratches, no deformation
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5.Power
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Motor Power
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7.5KW
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Hydraulic system power
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5.5KW
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6.Voltage
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380V 50Hz 3Phase
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As your requirement
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7.Control system
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Electric Box
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Customized(famous brand)
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Language
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English(Support multiple languages)
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PLC
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Automatic production of the whole machine. Can set batch, length, quantity, etc.
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8.Forming Speed
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15-20m/min
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The speed depends on the shape of the tile and the thickness of the material.
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Core structure and working principle
The biggest difference between the Metal Galvanized Steel Closed type Inter Lock Dovetail Metal Floor Deck Roll Forming Machine and ordinary open floor slab equipment is the design of its roller set.
1.Swallowtail forming process: The equipment uses multiple passes of rollers to curl and shrink the edges of the steel plate inward, forming a closed or semi closed section similar to a “dovetail”. After pouring concrete, this structure can tightly fit like a mortise and tenon, effectively preventing grout leakage and enhancing grip strength.
2.Key components:Forming host usually equipped with 20-25 precision rolling rolls, forged from 45 # steel and heat-treated to ensure the accuracy of the dovetail shape.
3.Hydraulic cutting system: equipped with high-precision hydraulic cutting device, the blade is made of Cr12 material, and the heat treatment hardness reaches HRC58 ° -60 °, ensuring a smooth and burr free cut.
4.PLC control system: realizes automatic sizing, counting, and cutting, with length accuracy controlled within ± 2mm, and supports switching between manual and automatic modes.

The floor slabs produced using this equipment perform excellently in terms of building performance:
1.Super strong bearing capacity:
The dovetail structure significantly enhances the lateral stiffness and bending resistance of the board, with unsupported spans up to 3-4 meters, making it suitable for large space buildings.

2.Fireproof and anti-corrosion:
The shrinkage design allows the ribs to be better wrapped after concrete pouring, with a fire resistance limit of more than 2 hours, and the galvanized layer is not easily damaged.

Pattern diagram:

Application scenarios :
Applicable fields: Especially suitable for hospitals, schools, airport terminals, and heavy industrial plants with high requirements for fire prevention and earthquake resistance.















