Various Sizes Precision Carbide Expansion Tool for Heat Exchanger
Product Specifications
Product Name:
Expansion Bullet, Expansion Ball, Expansion Head, Expansion Tool, Carbide Bullet, Tube Expander Bullet
Copper Tube Sizes:
Φ5, Φ6, Φ6.35, Φ7, Φ7.94, Φ8.9, Φ9.53, Φ12, Φ12.7, Φ14.5, Φ15.88
Processing:
Precision grinder fine grinding
Quality Control:
100% Inspection
Surface Finish:
Ra 0.2 (Mirror polishing or Coating available)
Service:
OEM or ODM available
Product Description
Our precision carbide expansion tools are engineered for expanding copper, aluminum, and stainless steel tubes in heat exchangers. Manufactured from durable YG8 carbide with high wear resistance and polished surface finish, these tools deliver reliable performance and extended service life.
Available in multiple standard sizes to fit various expanding machines, these expansion bullets are ideal for applications in air conditioning systems, heat pumps, and automotive manufacturing.
Applications
Compatible with multiple tube expander types including:
- Vertical electric expanders
- Shrinkless horizontal expanders
- Expanders with clamping fixtures
- Rotary double position expanders
- Horizontal combined expanders
- Four-station vertical expanders
- Portable manual tube expanders
Product Gallery
Related Spare Parts
Manufacturing Information
Manufactured by Guangzhou Runshi Mold Co., Ltd., specializing in precision machinery components for:
- Air conditioning and heat exchanger manufacturing
- New energy and fluid control industries
- Medical devices and semiconductor equipment
- Aerospace and automotive applications
- High-precision automation systems

Frequently Asked Questions
Q: Are you a manufacturer or trading company?
A: We are the manufacturer with direct production capabilities.
Q: What is your production process?
A: Our experienced engineers (10+ years) manufacture to precise specifications using samples or drawings, with strict tolerance control.
Q: What are your delivery terms?
A: Standard delivery is 5-10 days for in-stock items, 15-20 days for custom production (quantity dependent).
Q: What are your payment terms?
A: Orders ≤$10,000 require 100% advance payment. Larger orders require 50% deposit with balance before shipment.