Contact Us
Longkou Haifeng Machinery Co., Ltd.
Professional Manufacturer of Precision Machinery & Hydraulic Components in Shandong, China
Heavy Machinery
Hydraulic Components
Mining Equipment
CNC Machining
OEM & ODM
Address: Longkou City, Yantai City, Shandong Province, China
Founded: April 12, 2010 | Enterprise Type: Manufacturing Enterprise | Status: Active
OEM & ODM Accepted
High Precision
Durable & Wear Resistant
Global Export
Company Overview
Established in 2010, a professional manufacturer focusing on precision machinery and heavy machinery parts for more than 15 years.
Located in Longkou City, Yantai, Shandong Province, an important industrial and port city in northern China.
Specialized in R&D, production and sales of hydraulic cylinders, precision shafts, mining machinery parts and structural components.
Adopts high-strength alloy steel and advanced CNC machining technology to ensure product precision and durability.
Provides high-quality mechanical parts for various industries including mining, construction, energy and transportation.
Products widely used in hydraulic systems, mining equipment, industrial automation and infrastructure projects worldwide.
Core Products
| Category | Main Equipment | Features | Applications |
|---|---|---|---|
| Hydraulic Cylinders | Single-acting, double-acting, telescopic, tie-rod cylinders | High pressure resistance, good sealing, long stroke, stable operation | Excavators, loaders, cranes, mining machinery |
| Precision Shafts & Bushings | Rotary shafts, piston rods, guide bushings, bearing housings | High precision, wear resistant, surface hardened, anti-corrosion | Industrial machinery, hydraulic systems, automotive |
| Mining Machinery Parts | Crushing hammer heads, wear plates, conveyor rollers, screen meshes | Impact resistant, wear resistant, easy replacement, customized sizes | Mining crushing, screening, conveying equipment |
| Structural Components | Brackets, bases, frames, connectors, brackets | High load capacity, strong rigidity, precise welding, anti-deformation | Heavy machinery, construction equipment, power plants |
Production Equipment
• CNC machining centers and precision lathe processing equipment
• Automatic cutting, bending and welding production lines
• Heat treatment and quenching equipment for parts strengthening
• Forging and casting processing equipment
• Precision testing instruments and hardness testing machines
• Full-load performance testing equipment for finished products
Quality & Certifications
Strict quality control system covering raw material inspection to finished product delivery.
100% full inspection and performance testing before shipment to ensure product qualification.
Adopts high-quality alloy steel and national standard raw materials.
Comply with ISO9001 quality management system certification.
Complete quality traceability system for all export products.
Professional quality inspection team to ensure stable and reliable quality.
Technical Advantages
– Professional R&D team with rich experience in precision machinery and heavy machinery design.
– Advanced heat treatment technology to improve product wear resistance by 40%.
– Precision machining technology to ensure high matching accuracy of parts.
– Modular design for easy installation, replacement and overseas maintenance.
– Customizable size, material and performance according to customer requirements.
– Continuous technical optimization for harsh working conditions such as mining and construction.
Cooperation & Trade Terms
MOQ: 50 pieces (standard parts) / 1 set (custom assembly)
Lead Time: 10-20 working days for standard products
Payment Terms: T/T 30% deposit, 70% before shipment
Delivery Terms: FOB Qingdao, EXW Longkou available
Warranty: 12 months warranty + lifelong technical support
Packing: Standard export wooden case with moisture-proof and shockproof treatment
Service & Support
Free technical consultation and product selection guidance for global customers.
Customized design and production based on customer drawings and samples.
Online installation guidance and remote technical training.
24/7 online after-sales service and technical support.
Sufficient spare parts inventory for fast international delivery.
Long-term after-sales service and regular maintenance guidance.
Market & Customers
Long-term cooperative suppliers for domestic heavy machinery manufacturers.
Products sold to all major industrial markets in China.
Exported to Southeast Asia, Middle East, Africa, South America and Russia.
Supplied 200 sets of hydraulic cylinders to a mining company in Chile in 2024, with stable operation for over 18 months.
Cooperated with a machinery distributor in Indonesia to provide customized precision shafts and bushings in 2025.
Won high recognition and long-term cooperation from global customers.
Why Choose Us?
15+ years of professional experience in precision machinery and heavy machinery manufacturing.
Factory direct sales with competitive price and high cost performance.
High-quality products with high precision, wear resistance and long service life.
Strong customization capacity to meet various project requirements.
Complete export service and perfect after-sales support system.
Stable delivery time and reliable long-term partnership.