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Linyi Shunhe Spring Co., Ltd.
Professional Manufacturer of Springs & Custom Spring Solutions in Shandong, China
Tension Spring
Torsion Spring
Wire Spring
Custom Spring
OEM & ODM
Address: Lanshan District, Linyi City, Shandong Province, China
Founded: March 20, 2010 | Enterprise Type: Manufacturing Enterprise | Status: Active
OEM & ODM Accepted
High Precision
Fatigue Resistant
Global Export
Company Overview
Established in 2010, a professional manufacturer focusing on various springs and custom spring solutions for more than 15 years.
Located in Linyi, Shandong Province, an important logistics and machinery manufacturing base in northern China.
Specialized in R&D, production and sales of compression springs, tension springs, torsion springs, wire springs and custom springs.
Adopts high-quality spring steel (such as 65Mn, 60Si2Mn, stainless steel) and advanced heat treatment technology to ensure product durability.
Provides high-precision springs with fatigue resistance for various machinery, automotive, electronics and industrial equipment.
Products widely used in construction machinery, mining equipment, agricultural machinery, railway, home appliances and infrastructure projects worldwide.
Core Products
| Category | Main Equipment/Products | Features | Applications |
|---|---|---|---|
| Compression Springs | Coil springs, disc springs, die springs | High load capacity, linearity, long fatigue life | Machinery, automotive suspension, valves, industrial equipment |
| Tension Springs | Extension springs, pull springs, constant force springs | Constant tension, high flexibility, anti-corrosion | Automotive, agriculture, electronics, medical devices |
| Torsion Springs | Helical torsion springs, double torsion springs | High torque precision, stable moment, customizable direction | Door hinges, clamps, switches, mechanical assemblies |
| Custom Springs | Wire springs, complex shape springs, special material springs | Customized size, load, material according to drawings/samples | OEM projects, special machinery, aerospace, defense |
Production Equipment
• Computer numerical control (CNC) spring coiling machines for wire diameters from 0.3mm to 20mm.
• Automatic spring grinding machines for flat ends and precise length control.
• Heat treatment and tempering furnaces with controlled atmosphere for uniform spring strength.
• Surface treatment lines including shot peening, phosphating, galvanizing, and powder coating.
• Precision spring testing instruments such as universal testing machines and fatigue testers.
• Full-scale production lines with automated coiling, strength testing and packaging systems.
Quality & Certifications
Strict quality control system covering raw material inspection, in-process monitoring and final product testing.
100% dimensional inspection and load performance testing before shipment to ensure product conformity.
Adopts high-quality spring steel conforming to GB, JIS, DIN and ASTM standards.
Comply with ISO9001:2015 quality management system certification.
Complete quality traceability system with batch records for all export products.
Professional QC team to ensure stable and reliable quality for every order.
Technical Advantages
– Professional R&D team with rich experience in spring design for various industries.
– Advanced heat treatment technology to improve spring fatigue strength by 35%.
– Precision wire forming and end grinding to ensure high dimensional accuracy and concentricity.
– Customizable spring parameters such as free length, solid height, spring rate and material grade.
– Finite element analysis (FEA) for stress distribution and life prediction.
– Continuous optimization for harsh working conditions such as high temperature, corrosion and heavy load.
Cooperation & Trade Terms
MOQ: 100 pieces for standard springs (negotiable for custom)
Lead Time: 7-15 working days for standard products, 15-25 working days for custom
Payment Terms: T/T 30% deposit, 70% before shipment; L/C at sight acceptable
Delivery Terms: FOB Qingdao, EXW Linyi, CIF available
Warranty: 12 months warranty + lifelong technical consultation
Packing: Standard export wooden case or carton with moisture-proof and anti-rust treatment
Service & Support
Free technical consultation and product selection guidance for global customers.
Customized design and production based on customer drawings, samples or specifications.
Online installation guidance and remote technical training for large orders.
24/7 online after-sales service and technical support via email, WeChat, WhatsApp.
Sufficient inventory of raw materials and semi-finished products for fast delivery.
Long-term after-sales service and periodic maintenance suggestions.
Market & Customers
Long-term cooperative suppliers for domestic construction machinery and agricultural machinery manufacturers.
Products sold to all major industrial regions in China.
Exported to Southeast Asia, Middle East, Africa, South America and Russia.
Supplied 500,000 compression springs to a leading automotive parts company in Thailand in 2024, with zero defect rate and stable performance in engine valve applications.
Customized heavy-duty springs for a mining equipment manufacturer in South Africa in 2025, meeting strict fatigue life requirements for crusher machines.
Won high recognition and long-term cooperation from global customers for product quality and delivery punctuality.
Why Choose Us?
15+ years of professional experience in spring manufacturing and engineering solutions.
Factory direct sales with competitive price and high cost performance.
High-quality products with high precision, long fatigue life and excellent consistency.
Strong customization capability to meet diverse customer requirements for size, material and performance.
Complete export service with fast shipping and perfect after-sales support.
Stable delivery time and reliable long-term partnership with mutual trust.