The SAPSONS Electric Tube Expansion System is an automated tube rolling and expansion solution designed for expanding tubes into tube sheets in equipment such as boilers, condensers, chillers, heat exchangers, evaporators, and refinery vessels. The system is widely used in power plants, petrochemical industries, HVAC manufacturing, and sugar processing industries.
According to SAPSONS, the system uses an electrically driven motor combined with a digital electronic torque control panel to ensure precise and uniform tube expansion.
Working Principle :
The Electric Tube Expansion System operates by rotating a tube expander inside the tube. As the rollers expand the tube against the tube sheet, the electronic control panel continuously monitors the torque generated by the motor. Once the preset torque level is reached, the system automatically stops the motor to avoid over-expansion. By pressing the reverse switch, the expander retracts smoothly from the tube.
Main Components :
• Electric drive motor
• Digital torque control panel
• Tube expander assembly
• Forward and reverse control mechanism
• Power supply and safety controls
Key Features :
• Fully automatic torque-controlled operation
• Digital display for precise torque adjustment
• Uniform tube expansion with repeatable accuracy
• Protection against excessive cold working of tube metal
• Prevents tube-end damage and tube sheet ligament distortion
• Automatic shutdown at preset torque value
• Reverse operation for easy tool withdrawal
• Microcontroller-based solid-state electronics for reliability
Advantages :
• Faster tube rolling compared to manual methods
• Reduced operator fatigue
• Improved consistency and leak-proof joints
• Lower maintenance and rejection rates
• Saves manpower and commissioning time
• Suitable for continuous industrial production
Typical Applications :
• Boiler tube expansion
• Heat exchanger manufacturing
• Condenser tube rolling
• Sugar refinery evaporators
• Chiller and HVAC systems
• Petrochemical process equipment
Available Models :
SAPSONS mentions models such as:
• SM-0
• SM-1
• SM-2
• SM-3
Technical Importance :
The system ensures controlled radial expansion of tubes, creating strong mechanical bonding between the tube and tube sheet without welding. This improves heat transfer efficiency and minimizes leakage during high-pressure or high-temperature operation.
Summery :
The SAPSONS Electric Tube Expansion System is an electrically operated tube rolling machine used for expanding tubes into tube sheets in boilers, heat exchangers, condensers, chillers, and other industrial equipment. It uses a digital torque-controlled motor to provide accurate and uniform tube expansion. The system automatically stops when the preset torque is reached, preventing over-expansion and ensuring strong, leak-proof joints.
Key features include :-
Automatic operation, digital torque control, forward/reverse rotation, high accuracy, reduced operator effort, and reliable performance. It improves productivity, minimizes tube damage, and ensures consistent quality in industrial tube expansion applications.
