6pc Hex Tube Expander Set – HVAC Swaging & Flaring Tools

Professional HVAC Tube Expander & Swaging Tool Set

Get precision copper pipe expansion done right with the Zimir 5pc/6pc Hexagonal Handle Tube Expander Set. Engineered for HVAC technicians, refrigeration professionals, and serious DIYers, this complete swaging and flaring kit makes interconnecting copper tubing fast, accurate, and effortless. Whether you're installing a split air conditioner, repairing refrigeration lines, or working on any metalworking project involving copper pipe, this set has every size you need.

Made in Mainland China.

Why Choose This Tube Expander Set?

• High-Quality #45 Steel Construction: Each expander head is forged from premium #45 carbon steel, then subjected to high-temperature quenching for maximum hardness, durability, and long service life.
• Complete Size Range: Covers all common HVAC copper pipe diameters — 1/4" (6.3mm), 3/8" (9.5mm), 1/2" (12.7mm), 5/8" (15.9mm), 3/4" (19mm), and 7/8" (22.2mm) — so you're ready for virtually any job.
• Hexagonal & Triangle Shank Options: Fits standard 1/4" hex chuck or triangle shank hand electric drills for quick, low-effort expansion — no manual hammering required.
• Labor-Saving Design: The precision-machined cone shape spins smoothly into copper tubing to expand it cleanly and evenly, allowing two pipes to slip together perfectly for airtight connections.
• Versatile Use: Ideal for air conditioner installation, refrigeration repair, plumbing, and metalworking applications wherever copper pipe joining is needed.

Specifications

How to Use

1. Select the expander head matching your copper pipe's outer diameter.
2. Insert the hex or triangle shank into your hand electric drill chuck and tighten securely.
3. Position the expander tip into the end of the copper tube.
4. Run the drill at a moderate speed while applying gentle, steady forward pressure.
5. The tube will expand evenly — ready to accept the connecting copper pipe for a tight, leak-free fit.

Related Tools You May Need

Looking for more DIY and workshop tools? Check out these related products:

• 10-Pack 22AWG Glass Tube Fuse Holder 5x20mm & 6x30mm Screw
• 1-Channel SCR Solid State Relay Module DC3-24V 40A Optocoupler

Learn More About HVAC Safety & Best Practices

For safe handling of HVAC tools and refrigerants, refer to guidance from the U.S. Occupational Safety and Health Administration (OSHA) – Refrigerants Safety.

Frequently Asked Questions

Q: What types of pipe can these tube expanders be used on?

A: These tube expanders are specifically designed for copper pipes and tubing, which are the standard material used in HVAC air conditioning systems and refrigeration lines. They are not recommended for steel, PVC, or aluminum pipes.

Q: Do I need a special drill to use these HVAC tube expanders?

A: No special drill is required. These expander heads feature a standard 1/4" hex shank or triangle shank, making them compatible with most common hand electric drills with a standard chuck. Simply insert and tighten like a drill bit.

Q: What is the difference between the 5-piece and 6-piece set?

A: The 6-piece set includes all six sizes: 1/4", 3/8", 1/2", 5/8", 3/4", and 7/8". The 5-piece set omits one size (typically the 7/8"). For maximum coverage across HVAC and refrigeration applications, the 6-piece set is recommended.

Q: Are these tube expanders suitable for professional HVAC use?

A: Yes. Constructed from heat-treated #45 carbon steel, these expanders are built to withstand repeated professional use. The high-temperature quenching process ensures hardness and longevity, making them suitable for both professional HVAC technicians and DIY enthusiasts.