Contact Us
Linyi Shunyi Spring Processing Factory
Professional Manufacturer of Compression, Tension & Torsion Springs in Shandong, China
Address: Lanshan District, Linyi City, Shandong Province, China
Founded: March 15, 2012 | Enterprise Type: Manufacturing Enterprise | Status: Active
Company Overview
Established in 2012, a professional spring manufacturer with over 12 years of experience in the industry.
Located in Linyi, Shandong Province, a key machinery and logistics hub in northern China.
Specialized in R&D, production and sales of various industrial springs and wire forms.
Uses high-quality spring steel and advanced heat treatment technology to ensure product reliability.
Provides customized spring solutions for automotive, machinery, electronics and construction industries.
Products widely used in automotive suspensions, industrial machinery, agricultural equipment and household appliances worldwide.
Core Products
| Category | Main Equipment | Features | Applications |
|---|---|---|---|
| Compression Springs | Round wire compression spring, conical spring, variable pitch spring | High load capacity, stable force, fatigue resistance | Automotive suspensions, industrial presses, valves |
| Tension Springs | Closed coil tension spring, open coil tension spring, extension spring with hooks | Constant tension, good elasticity, corrosion resistant | Garage doors, agricultural machinery, electrical switches |
| Torsion Springs | Single torsion spring, double torsion spring, spiral torsion spring | Accurate torque, compact design, long service life | Clocks, door hinges, medical devices, mechanical actuators |
| Wire Forms & Custom Springs | Wire clips, retaining rings, torsion bars, special-shaped springs | Customizable shape, material and dimensions, high precision | Automotive seat mechanisms, electronic components, industrial tools |
Production Equipment
• CNC automatic spring coiling machines (0.2-12mm wire diameter)
• Continuous heat treatment furnaces with precise temperature control
• Shot peening and surface finishing equipment
• Precision grinding and end-coiling machines
• Fatigue testing machines and load testing equipment
• 3D coordinate measuring machines for dimensional inspection
Quality & Certifications
Strict quality control system from raw material incoming inspection to final product testing.
100% dimensional and load testing for all springs before shipment.
Uses high-quality spring steel (SAE 9254, 51CrV4, 304 stainless steel) from certified suppliers.
ISO9001:2015 quality management system certified.
Complete product traceability system for every batch.
Professional quality team with over 10 years of spring inspection experience.
Technical Advantages
– Professional R&D team with extensive knowledge in spring design and material science.
– Advanced finite element analysis (FEA) for stress and fatigue life optimization.
– Proprietary heat treatment process improves spring fatigue life by 30%.
– Precision coiling technology ensures consistent pitch and diameter tolerance within ±0.1mm.
– Customizable surface treatments: zinc plating, powder coating, black oxide, phosphate.
– Continuous improvement through systematic testing and customer feedback.
Cooperation & Trade Terms
MOQ: 500 pieces (standard springs) / 1000 pieces (custom springs)
Lead Time: 10-15 working days for standard products
Payment Terms: T/T 30% deposit, 70% before shipment; L/C at sight accepted
Delivery Terms: FOB Qingdao, EXW Linyi, CIF available upon request
Warranty: 12 months warranty + lifetime technical support
Packing: Inner plastic bag + outer cardboard box / wooden crate for export, with anti-rust treatment
Service & Support
Free technical consultation and spring selection guidance for global customers.
Custom design and manufacturing based on customer drawings, samples or specifications.
Online assistance for spring installation and performance validation.
24/7 after-sales service and prompt response to inquiries.
Sufficient inventory of popular spring types for quick delivery.
Long-term maintenance guidance and replacement part recommendations.
Market & Customers
Trusted supplier for domestic automotive parts manufacturers and industrial machinery factories.
Products supplied to major machinery companies in Shandong, Jiangsu and Zhejiang provinces.
Exported to Southeast Asia, Europe, Middle East, South America and Africa.
Supplied 50,000 compression springs to an automotive suspension manufacturer in Thailand in 2024, with zero defect rate in field use.
Delivered custom torsion springs for a German agricultural machinery company in 2025, achieving over 2 million cycles without failure.
Received high praise and repeat orders from customers across 20+ countries.
Why Choose Us?
12+ years of specialized spring manufacturing experience.
Factory direct pricing with competitive and transparent cost.
High product consistency, durability and performance reliability.
Strong customization capability for diverse application needs.
Complete export documentation and professional logistics support.
Stable delivery schedule and long-term cooperation partnership.