Dovetail Close Joint Floor Roll Forming Machine: The Ultimate Solution for High-Strength Composite Flooring

What is a Dovetail Close Joint Floor Roll Forming Machine?

A Dovetail Close Joint Floor Roll Forming Machine is a specialized industrial system designed to produce high-precision, dovetail-profiled steel floor decking. Unlike traditional open-type decks, the "close joint" or "closed-type" design provides superior composite action with concrete, enabling longer spans and thinner floor depths in multi-story steel buildings. This machine transforms galvanized steel coils (0.8mm - 1.5mm) into structural decking that serves as both a permanent formwork and a tensile reinforcement.

Key Features & Benefits of Our Dovetail Floor Decking Machine

• • Enhanced Structural Integrity: The dovetail (indented) profile creates a mechanical interlock with concrete, significantly increasing the shear-bond capacity of composite slabs.
  • Space-Saving Design: Enables shallow floor depths, allowing developers to maximize ceiling height or fit more stories into a building's total height.
  • High-Precision Engineering: Equipped with a 95mm solid shaft and high-power motors (up to 3x11kw), our machine ensures profile precision within 1mm and minimal material waste.
  • Cost & Time Efficiency: Eliminates the need for temporary formwork and reduces the weight of the steel frame, leading to faster installation and lower labor costs.
  • Superior Fire Resistance: The closed-rib design offers better protection for the steel, enhancing the overall fire rating of the floor system.

Technical Specifications

Machine Details

Applications in Modern Construction

The floor decks produced by the Dovetail Close Joint Floor Roll Forming Machine are widely used in:

1. High-Rise Office Buildings: For maximizing floor space and ceiling height.
2. Industrial Mezzanines: Providing high load-bearing capacity for heavy machinery.
3. Residential Apartments: Reducing floor-to-floor height and improving sound insulation.
4. Commercial Malls: Fast-track construction for large-scale flooring areas.

   FAQ: Understanding Dovetail Floor Decking

   1. Why choose a dovetail profile over a trapezoidal profile?

   The dovetail profile offers a stronger mechanical bond with concrete, which allows for thinner slabs and longer spans without additional reinforcement. It is preferred for high-performance composite flooring.

   2. Can this machine handle high-tensile galvanized steel?

   Yes, our machines are engineered with reinforced structures and high-torque motors specifically to process G550 grade high-tensile galvanized steel coils.

   3. How does the "close joint" design improve fire safety?

   The closed ribs trap less air and provide a more continuous steel-concrete interface, which slows down heat transfer to the structural steel during a fire.

   4. What is the typical production speed for this roll former?

   The standard production speed is 12-15 meters per minute, including the time for high-precision hydraulic cutting.

About The Manufacturer

With over 15 years of design and manufacturing experience, ZTRFM provides professional cold roll forming solutions worldwide. Our products have been exported to over 150 countries and are backed by ISO 9001 and CE certifications.