Our Engineering Approach
Engineered at Every Stage
From material fundamentals to final spring performance, we engineer every detail with precision — controlling the complete process to deliver reliable, high-performance spring solutions.
Material
Material Science & Heat Treatment
We understand the microstructure and mechanical behaviour of spring steel, precisely controlling heat treatment for the performance the final part demands.
Engineering
CNC Spring Coiling
Precisely formed into exact spring geometry on ERP-synchronised CNC coiling lines.
Validation
Ready to Ship
Ground, coated, 100% tested and fully traceable — straight from our line to the field.
Material Science
Understanding spring-steel microstructure
Engineering Simulation
Design validation through load and fatigue analysis
CNC Spring Coiling
Forming with millimetric precision
Testing & Delivery
100% inspected, fully traceable
About Us
From Material to Performance: Spring Engineering
Tenvor, Since 1989, we've combined deepening material knowledge with advanced engineering capability to become one of Türkiye's leading spring manufacturers. Across our 60,000 m² facility, every stage — from design to heat treatment, forming to quality — is carried out under one roof, under tight engineering control.
This integrated approach lets us manage the entire process ourselves, from material selection to final performance — delivering consistent quality, short lead times and dependable engineering.
Engineering Control
Technical command at every stage
Short Lead Times
Integrated process advantage
Cost Advantage
Efficient process management
Quality 4.0
ERP-driven real-time QC
Our Production Process
From raw material to dispatch, every step runs under one roof, tracked by CNC control and our ERP system.
Raw Material QC
Incoming material is verified through spectrometer analysis and mechanical testing.
Spectrometer AnalysisMaterial Preparation & Heat Treatment
Multi-stage processing and controlled heat treatment produce spring-grade material.
Heat Treatment TechnologyCNC Spring Coiling
All lines are CNC-controlled, with real-time production tracking via our ERP system.
Quality 4.0 ERPGrinding, Coating & Painting
Complete finishing with our in-house grinding, shot-peening, coating and painting lines.
Shot PeeningQuality Control & Delivery
Force testing, dimensional measurement and full traceability per batch. ISO 9001 & IATF 16949.
ISO 9001 · IATF 16949
Our Products
Springs Engineered for Precision
Every spring we make is produced under tight engineering control, from material selection to final testing; our grinding, coating and painting lines sit in the same facility. For projects beyond standard dimensions, our technical team works with you from the first sketch.
Suspension Springs
High-fatigue-life cold- and hot-coiled suspension springs for passenger and commercial vehicle suspension systems. Series production under IATF 16949 with full traceability.
- Wire diameter: Ø 5.00 – 20.00 mm
- Passenger, light & heavy commercial vehicle fit
- Shot-peened with corrosion coating
- Series production under IATF 16949
Compression Springs
Cold- and hot-coiled compression springs in cylindrical, conical and variable-pitch designs. Ground or unground end options, with shot-peening and colour coding available.
- Cold coiling: Ø 1.50 – 30.00 mm
- Spring steel, stainless, special alloys
Extension Springs
Extension springs with half-hook, German, English, extended and machine-screw eye options. Initial tension is adjusted to customer specification.
- Wire diameter: Ø 1.50 – 14.00 mm
- Stainless steel, spring steel, special alloys
- Manufactured to customer drawing
Torsion Springs & Wire Forms
Right/left winding and double-torsion combinations, plus wire forms with spring functionality in virtually any geometry.
- Wire diameter: Ø 1.50 – 14.00 mm
- Precise angle and force control
- Custom leg geometry
Industries We Serve
Spring Engineering for Every Sector
From automotive to agriculture, white goods to transportation, we deliver spring solutions tailored to the specific requirements of your application, backed by broad sector experience.
R&D & Quality Laboratory
The Engineering Behind Every Spring
We don't just manufacture — we examine, test and verify at every stage. From material microstructure to the mechanical performance of the finished spring, our laboratory guarantees that every part we ship meets specification.
LAB · 01Microstructure Imaging
We examine the grain structure of the material under optical microscopy, visually confirming that the microstructure meets the required quality after heat treatment.
LAB · 02Non-Destructive Testing
We use eddy current testing to detect surface and sub-surface cracks in finished springs without damaging the part. Every batch is scanned before it leaves the line.
LAB · 03Mechanical Testing
Through load-deflection curves, tensile strength, torsion and fatigue testing, we measure exactly how each spring will behave under real working conditions.
Grain boundary and phase structure analysis
Force-deflection measurement at specified lengths
SAMPLE TEST RECORD
Representative measurement values
EN 10270-1 · EN 10270-2 · ISO 9001 · IATF 16949
Spring Finder
Find the Right Spring for Your Project
In a few questions, let's identify the spring category that best fits your needs and connect you with our technical team.
Which industry is this for?
News
Trade Fairs & Events
Meet Us at Konya Agriculture Fair 2026
Mark your calendar for Konya Agriculture Fair 2026, taking place April 7–11 in Konya, Türkiye. Our team will be there to showcase our spring engineering solutions for the agriculture sector.
Join Us at Automechanika Frankfurt 2026
Mark your calendar for Automechanika Frankfurt 2026 (September 8–12), where we'll unveil new shock-absorber and seating spring solutions for passenger-car and commercial-vehicle programs.
Thank You for Agritechnica 2025
We took part in Agritechnica Hannover, held November 9–15, 2025. Thank you to everyone who visited our stand — our cultivator and harrow-tine spring demonstrations drew strong interest from European visitors.
Upcoming trade fairs and events will be listed here soon. Get in touch with us for the latest announcements.
Contact & Quote
Let's Build Together
Our technical team works with you from the drawing stage through to series production.
- Free technical consultation and dimensional review
- Custom design support for non-standard dimensions
- Fast preliminary quote turnaround
Address
Çerkeşli OSB Mah. İmes 23. Cad. No:12/1 Dilovası / Kocaeli
E-posta
info@tenvorsprings.com.trPhone
+90 262 502 34 90Certifications
ISO 9001 · IATF 16949
Working Hours
Mon–Fri: 08:00 – 17:30