Advanced
SYMALEN™ 2.0
Pipe Production
SYMALEN™ 2.0 conduit systems are designed to integrate seamlessly with standard electrical installation components available on the market. Manufactured using advanced extrusion technology and precision engineering, they provide professional electricians and contractors with a reliable, efficient and easy-to-install solution for modern electrical installations.s.
OEM
Custom dimensions, materials and co-extrusion manufacturing available.
Electrical Installation
Inside Floor Structures
Install faster. Work smarter. Build cleaner electrical installations with SYMALEN™ conduit systems designed for modern construction.
Faster Installation
Less wall chasing, less labor, more productivity.
More Flexible Routing
Conduits can be placed inside insulation and beneath the concrete slab.
Built for Durability
Protected by the surrounding concrete for long-term performance.
Professional Solution
Compatible with standard electrical fittings for efficient installations.
Why is SYMALEN™?
SYMALEN™ conduit systems combine flexibility, durability and excellent pull-through performance in a single solution. Fully compatible with standard electrical installation components, they enable faster installation, easier cable routing and reliable long-term performance. The new SYMALEN™ 2.0 generation has been specifically developed to further reduce cable pulling forces, making installation even faster and more efficient for professional electricians and contractors.
Material Engineering
Developed for 2026, the new SYMALEN™ 2.0 compound features an optimized low-friction surface that significantly improves cable pull-through performance. The enhanced material formulation enables faster installation, reduced pulling forces and greater efficiency for professional electricians.
Precision Extrusion
Every SYMALEN™ conduit is manufactured with consistent wall thickness, precise dimensions and excellent roundness. Each production batch is monitored and traceable, ensuring reliable quality and long-term performance.
Custom Manufacturing
Custom diameters, wall thicknesses, colors and technical specifications are available for OEM and industrial customers. Every custom SYMALEN™ conduit can also be manufactured using the advanced SYMALEN™ 2.0 low-friction technology for improved cable pull-through performance.
European Production
Every SYMALEN™ conduit is manufactured in Europe in accordance with European environmental and quality standards, ensuring responsible production, consistent quality, long-term reliability and full recyclability at the end of its service life.
Standard Product Range Direct From Manufacturer
Both standard and custom-made SYMALEN™ conduits are supplied directly from the manufacturer. This ensures competitive pricing, shorter lead times and significant cost savings without compromising quality.
Standard Compatibility
SYMALEN™ products are designed with standardized dimensions, allowing compatibility with components, fittings and accessories from other manufacturers and existing systems.
SYMALEN™ Standard Dimensions
Standard SYMALEN™ conduits are manufactured in widely used standard dimensions and are fully compatible with standard fittings and accessories, ensuring fast and reliable installation. All products are manufactured to order.
| Article No. | Outer Diameter | Wall Thickness | Coil Length | Application | Package |
|---|---|---|---|---|---|
| SYM-16-W | 16 mm | 2.0 mm | 100–300 m | Winter | 900 m |
| SYM-20-W | 20 mm | 2.0 mm | 100–300 m | Winter | 900 m |
| SYM-25-W | 25 mm | 2.0 mm | 100–200 m | Winter | 720 m |
| SYM-32-W | 32 mm | 2.5 mm | 50 m | Winter | 600 m |
| SYM-40-W | 40 mm | 2.5 mm | 25 m | Winter | 480 m |
| SYM-50-H | 50 mm | 3.2 mm | 4–6 m ? Delivered in straight lengths, not in coils. | All Seasons | 1024 m |
| SYM-63-H | 63 mm | 3.5 mm | 4–6 m ? Delivered in straight lengths, not in coils. | All Seasons | 576 m |
| SYM-16-S | 16 mm | 2.0 mm | 100–300 m | Summer | 900 m |
| SYM-20-S | 20 mm | 2.0 mm | 100–300 m | Summer | 900 m |
| SYM-25-S | 25 mm | 2.0 mm | 100–200 m | Summer | 720 m |
| SYM-32-S | 32 mm | 2.5 mm | 50 m | Summer | 600 m |
| SYM-40-S | 40 mm | 2.5 mm | 25 m | Summer | 480 m |
Frequently Asked Questions
Why should you order SYMALEN™ pipes directly from ST Plastics?
We are not simply a distributor—we manufacture our own products. This gives us complete control over raw materials, the production process, dimensional accuracy, and overall product quality.
Our partners choose us because we offer:
- European manufacturing with reliable quality
- Consistent dimensional accuracy
- Flexible production capabilities
- Fast quotation turnaround
Whether you need standard or custom-made SYMALEN™ pipes, our team will help you find the best solution for your application.
What is the minimum order quantity?
We manufacture orders ranging from a few hundred meters to multi-kilometer production runs.
As with most industrial manufacturing, larger order quantities benefit from lower unit prices. For very small quantities, purchasing through a local distributor may sometimes be more economical.
Can you manufacture custom sizes?
Yes.
One of the greatest advantages of plastic extrusion is the ability to manufacture pipes according to your exact requirements.
- Custom outer and inner diameters
- Custom wall thicknesses
- Custom lengths
- Wide range of colors
- Special packaging options
We can also manufacture products based on your technical drawings or physical samples.
How much do SYMALEN™ pipes cost?
We respond to most quotation requests within 24 hours.
Pricing depends on dimensions, material selection and order quantity. Every customer receives a customized quotation based on their specific requirements.
How are the products shipped?
Our prices are quoted EXW (Ex Works). However, we can arrange transportation throughout Europe upon request.
SYMALEN™ pipes are supplied on pallets in coils. Packaging quantities for each size are listed in the product dimension table.
Which industries use SYMALEN™ pipes?
- Industrial manufacturing
- Construction industry
If you are unsure whether SYMALEN™ is suitable for your application, our technical team will be happy to assist you.
Which materials are used to manufacture the pipes?
Our standard products are primarily manufactured from flexible polymer materials, enabling faster installation, easier handling, and lower installation costs.
What level of dimensional accuracy do you achieve?
Our modern extrusion lines are equipped with laser measuring systems that continuously monitor dimensions throughout the production process, ensuring consistently high accuracy.
If your project requires special tolerances, please let us know when requesting a quotation.
What is the typical production lead time?
Lead time depends on:
- Order quantity
- Raw material availability
- Current production capacity
In most cases, production lead times range from 2 to 6 weeks.
Can't find the size you need?
No problem.
As an extrusion manufacturer, custom plastic pipe production is one of our core specialties.
Simply send us your drawing, sample, or technical requirements, and we will prepare a customized quotation within a short time.
Why buy directly from the manufacturer?
- More competitive pricing
- Direct technical support
- Greater manufacturing flexibility
- Custom production capabilities
- Faster communication
- Reliable long-term supply
We don't just manufacture plastic pipes—we deliver complete extrusion solutions.
With decades of extrusion experience, ST Plastics supports industrial customers across Europe. Whether you require custom product development, OEM manufacturing, or high-volume production, our goal remains the same: reliable quality, on-time delivery, and long-term partnerships.
Request a quotation today—our team will contact you within 24 hours.
What is SYMALEN™ 2.0?
Advanced Low-Friction Material
A newly engineered polymer compound creates a smoother inner surface, reducing friction during cable installation and making pulling operations significantly easier.
Faster Cable Installation
Lower pulling forces help installers route cables more quickly, reducing installation time and improving efficiency on every project.
Proven SYMALEN™ Performancen
The excellent flexibility, dimensional stability and mechanical strength of the original SYMALEN™ conduit remain unchanged, ensuring the same reliable long-term performance.
Ready for Standard & Custom Production
Both standard dimensions and custom-manufactured SYMALEN™ conduits are available with the new SYMALEN™ 2.0 technology, allowing every project to benefit from improved installation performance.
Industrial Extrusion Technology
for Modern Applications
STP Extrusion supports industrial partners with custom SYMALEN™ pipe manufacturing, technical extrusion development and OEM production solutions tailored to demanding applications.
Request a quote
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