The professional solution for secure threaded connections in round and rectangular tubes
Zamak (zinc die-cast) pipe inserts are indispensable connecting elements for professional pipework. As a manufacturer with many years of experience, we offer precision-machined threaded inserts for round and square tubes that impress with their high strength and precise fit. Our fine zinc alloy pipe inserts, manufactured according to DIN EN 1774, are produced exclusively in Germany and meet the highest quality standards according to DIN ISO 9001:2015.
What are Zamak pipe inserts?
Zamak pipe inserts are zinc die-cast parts with an integrated metric thread that are pressed into steel pipes to create a stable threaded connection. They are made of a high-quality zinc alloy (Zamak) characterized by the following properties:
- High-strength zinc alloy according to DIN EN 1774 with optimal strength and dimensional stability
- Integrated metal thread (M10 standard, M8 as a special variant) for secure screw connections
- Ribbed outer profile for preventing rotation and providing a positive locking connection in the pipe
- Precision manufacturing zinc die casting process with tight tolerances
The special thing: The circumferential band It serves as a precise stop and ensures even force distribution on the pipe wall. The optimized geometry with longitudinal ribs creates a permanent, rotationally stable connection without additional adhesives or fasteners.
Application areas: Where are pipe inserts used?
Zamak pipe inserts are the connecting element of choice in various professional B2B industries:
Furniture industry & office furnishings
- Steel tube frames for tables, chairs and seating furniture
- Installation of height-adjustable feet on furniture frames
- Shelving systems and modular storage solutions
- Office furniture with steel tube frame
- Attaching casters and gliders to furniture structures
Shopfitting & Shop Equipment
- Product displays and display systems made of steel tubing
- Modular shelving systems for the retail sector
- Shop fittings with tubular frame constructions
- Exhibition furniture and sales stands
- Flexible shop concepts with reusable components
Exhibition stand construction & event technology
- Exhibition stands with tubular frame constructions
- Disassemblable exhibition systems for mobile use
- Presentation walls and information stands
- Portable event furniture
- Flexibly adaptable exhibition architectures
Mechanical and plant engineering
- Machine frames and base frames
- Transport devices and trolleys
- Protective enclosures with tubular frame constructions
- Workplace and assembly systems
- Conveyor systems and handling systems
Other industrial applications
- Metalworking: Frame and rack constructions
- Medical technology: Racks for medical devices
- Craftsmanship: Custom steel tube constructions
- Special machine construction: Custom-made products
Advantages of Zamak pipe inserts
Technical advantages
✓ High-strength zinc alloy DIN EN 1774 – Tensile strength 280 MPa for maximum load capacity
✓ Precise dimensional accuracy Tolerances ±0.1 mm achieved through die casting process
✓ Twist-proof Ribbed outer profile prevents rotation in the pipe
✓ Corrosion-resistant The natural oxide layer provides lasting protection.
✓ High Brinell hardness 82-100 HB for wear-resistant threaded connections
Material & Quality
✓ Zamak alloy Optimal combination of strength and castability
✓ Made in Germany Production exclusively in Germany
✓ DIN ISO 9001:2015 Certified quality management
✓ longevity Over 100 years of lifespan with proper use
✓ Surface finishing Electroplating, chrome plating, and painting are possible.
Economic advantages
✓ Quick assembly Simple press-fit installation without additional fastening
✓ Cost-effective Efficient series production through die casting processes
✓ Reusable Can be used multiple times in modular constructions
✓ Low wear and tear Self-lubricating properties of the alloy
Product variants: Zamak pipe inserts for every need
We offer you two main variants of Zamak pipe inserts, which are optimally suited to different pipe constructions:
1. Zamak tube inserts for square tubes
The stable solution for rectangular tube constructions
Tube inserts for square tubes are specifically designed for use in rectangular steel tubes and offer optimal support thanks to their adapted geometry:
Standard version:
- Thread: M10 x 1.5 mm (Standard thread according to DIN 13)
- Special threads: M8 x 1.25 mm available
- Waist height: 5 mm as a precise stop
- Overall height: Optimized for standard pipes
- Material: Zamak 5 (ZL0410) according to DIN EN 1774
Available dimensions for different pipe thicknesses:
- Dimensions from 25/25/1.5 mm to 80/30/2.5 mm
- Suitable for pipe wall thicknesses from 1.5 mm to 2.5 mm
- Various waist height options available upon request
Technical features:
- Ribbed square profile for positive-locking anchoring
- Twist-proof due to its angular basic shape
- Precise fit for common standard tubes
- Natural or, upon request, with surface finishing.
→ Learn more: Tube inserts for square tubes
2. Pipe inserts for round pipes made of Zamak
The universal solution for round tube constructions
Pipe inserts for round tubes are the ideal choice for circular steel tubes and impress with their versatile application:
Standard version:
- Thread: M10 x 1.5 mm (Standard thread)
- Waist height: 5 mm as a mounting stop
- Overall height: For optimal anchoring
- Material: Zamak 5 according to DIN EN 1774
- Design: With longitudinal ribs to prevent twisting
Available pipe diameters:
- Round tube Ø 60/2 mm for 2.0 mm wall thickness
- Other sizes available on request
- Adaptation to customer-specific pipe dimensions is possible.
Advantages:
- Universally applicable for various applications
- 360° locking mechanism with circumferential ribs
- Also suitable for thin-walled pipes
- Various surface finishes: natural, galvanized, chrome-plated
→ Learn more: Pipe inserts for round pipes
Assembly and application instructions
Professional installation in 4 steps
1. Preparation
Check the internal dimensions of the pipe and ensure that the pipe is clean, free of burrs and dry.
2. Positioning
Position the pipe insert at the end of the pipe with the thread facing outwards. The collar must be flush with the pipe edge.
3. Press in
Press the insert into the pipe with controlled force (approx. 50-100 N for manual installation) until the collar acts as a stop. For serial installation: the use of pneumatic cylinders or hand presses is recommended.
4. Check
Check that the insert is securely in place by gently twisting it – it should not be able to be turned or pulled out.
Important tips for optimal results
- Pipe preparation: Edges should be slightly chamfered (0.5 mm x 45°)
- Press tools: Use suitable mandrels or adapters
- Do not hit: Hammer blows can damage the thread.
- Coated pipes: For powder-coated pipes, remove any coating in the injection area.
- Tightening torque: Note the permissible torques for M10 (approx. 40-50 Nm) and M8 (approx. 20-25 Nm)
Why Zamak pipe inserts are the right choice for your project
Versatility: Whether furniture construction, shopfitting or mechanical engineering – Zamak pipe inserts offer the right solution for almost any pipe connection.
Professionalism: Precise manufacturing and standard-compliant thread quality guarantee high-quality assembly and a professional result.
Economy: Zamak pipe inserts quickly pay for themselves thanks to their quick installation without additional tools and their long service life.
Reliability: Thanks to many years of experience in parts manufacturing and the quality "Made in Germany", our pipe inserts are the safe choice for demanding applications.
Frequently Asked Questions (FAQ)
What is the load-bearing capacity of pipe inserts made of Zamak?
The load-bearing capacity depends on the pipe wall thickness, the pipe material and the type of load.
Guideline values for axial forces (tension/compression):
- M10 in pipe with 2 mm wall thickness: approx. 1,500-2,000 N
- M10 in pipe with 2.5 mm wall thickness: approx. 2,500-3,000 N
Tip: For dynamic loads or vibrations, include a safety factor of 2.
Can I retrofit pipe inserts?
Yes, Zamak pipe inserts are ideal for retrofitting. They can be pressed into existing pipe structures, provided the pipe end is accessible and the internal dimensions match.
Are custom orders possible?
Yes, we offer customized solutions:
- Different thread types (M6, M12, UNC, etc.)
- Customized dimensions for special tubes
- Special surface treatments
- Individual shaft geometries
Contact us for technical advice.
How does Zamak react to temperature fluctuations?
Zamak is temperature resistant in the range of -40°C to +95°C (continuous load) or up to 120°C for short periods. The coefficient of thermal expansion of Zamak (27 × 10⁻⁶ K⁻¹) is close to that of steel (12 × 10⁻⁶ K⁻¹), so that no problems due to different thermal expansion occur when used in steel pipes.
What tightening torques are permissible?
Recommended tightening torques for bolted connections:
- M10: 40-50 Nm (standard thread in Zamak)
- M8: 20-25 Nm (standard thread in Zamak)
Important: When using leveling feet or height adjustment screws, follow the manufacturer's instructions. Overtightening can damage the threads.
Are pipe inserts also suitable for outdoor applications?
Yes, Zamak pipe inserts are suitable for outdoor applications:
✓ Natural corrosion resistance through oxide layer formation
✓ Optional electroplating for increased protection
✓ Weatherproof and UV-stable
✓ Temperature range covered -40°C to +95°C
A notice: For areas with constant moisture or saltwater exposure, we recommend galvanized or chrome-plated versions.
Are you looking for the right pipe inserts for your application?
Whether threaded pipe inserts for square tubes, round tubes, steel tube constructions in furniture making, shopfitting, exhibition stand construction or mechanical engineering – we will be happy to advise you personally and find the optimal solution for your project.
Contact our sales department: