Dairy Tube Expander
What is a Dairy Tube Expander
Allen Cap Screws, also known as socket head cap screws, are high-strength fasteners designed with a cylindrical head and internal hex drive. These screws are tightened using an Allen (hex) key, allowing for a secure and flush fit even in tight or recessed spaces. Their clean, compact design makes them ideal for machinery, automotive, electronics, and structural applications requiring precision and aesthetics.
Allen Cap Screws are widely used in high-torque and high-performance environments due to their superior clamping force and space-efficient profile.
Key Features
- Sanitary Operation – No welds, maintains hygienic integrity
- Uniform Expansion – Ensures leak-free, precise tube joint
- Tool-Grade Material – Hardened steel rollers and mandrels
- Easy Handling – Compact, manually or power-driven operation
- Low Maintenance – Durable design for repeated use
Specifications
Mechanical Properties
Equivalent Grades
Weight Chart
Specifications
| Parameter | Specification |
|---|---|
| Tube Size Compatibility | ½” to 4” OD |
| Expansion Range | Up to 1.5 mm wall thick |
| Material | Tool Steel / Stainless Steel Components |
| Roller Type | 3-Roller, 5-Roller Options |
| Drive | Manual or Pneumatic |
| Finish | Polished contact surfaces |
| Property | Value |
|---|---|
| Strength | High tool hardness (HRC 60+) |
| Tolerance | ±0.01 mm radial expansion |
| Reusability | Excellent, multi-cycle lifespan |
| Pressure Compatibility | Supports high-pressure joints |
| Standard | Application Reference |
|---|---|
| DIN | Compatible with DIN 11850 Tubes |
| ISO | Matches ISO/IDF Tube Dimensions |
| ASTM | Suited for ASTM A270 SS Tubing |
| BS | Works with BS 4825 Tubes |
| Tube Size (inch) | Expander Type | Weight (grams) |
|---|---|---|
| 1” | Manual | 780 |
| 1.5” | Manual | 900 |
| 2” | Manual | 1050 |
| 3” | Pneumatic | 1600 |
| 4” | Pneumatic | 1900 |
Applications of Dairy Tube Expander
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
What is the purpose of a Dairy Tube Expander?
It expands tube ends to ensure a tight, hygienic connection in process piping without requiring welding.
Is tube expansion better than welding?
For many sanitary applications, yes. Expansion avoids heat damage and maintains internal cleanliness.
Are these expanders reusable?
Yes, they are designed for repeated use with minimal wear when properly maintained.
Can I use this for non-dairy applications?
Absolutely. They are suitable for any hygienic or precision tube system, including pharma, food, and beverages.
