Pipe expansion, pipe shrinking, thickening, and hydraulic forming

The working principle of a pipe expander is usually to use mechanical pressure or hydraulic pressure to insert a conical mandrel or a multi-lobed expander head into the inside of the pipe and squeeze the pipe wall outward to make its diameter expand uniformly. 

The main types include:

• Manual expander:
  • FeaturesSmall in size and lightweight, it is usually equipped with a ratchet mechanism to save physical effort. Suitable for small-scale applications such as on-site repair and air conditioning installation.
  • applicationAir conditioning copper pipe installation and plumbing/electrical repair.
• Electric/Lithium-ion Battery Expander:
  • FeaturesDriven by batteries or power, it automatically completes tube expansion, saving time and effort and achieving high efficiency.
  • applicationProfessional air conditioning installation, batch on-site operations.
• Hydraulic Expanding Machine:
  • FeaturesThe hydraulic system provides a powerful and stable expansion force, suitable for large-diameter, thick-walled pipes, and even for the manufacture of boiler-related heat exchangers.
  • applicationHeavy industry, boiler manufacturing, and production of large heat exchangers.
• Automatic Double-end Expander:
  • FeaturesIndustrial-grade machines can simultaneously perform forming processes such as flaring, shrinking, flanging, punching, or sealing on both ends of pipes. They typically employ servo control to ensure high precision.
  • applicationSatellite ear brackets, automotive parts, and automated production lines for mass production of tubing.