Welded Hydraulic Cylinder

Advantages of Welded Hydraulic Cylinder

EASTAI’s Welded Hydraulic Cylinders offer a number of technical and operational advantages that make them a preferred choice for global distributors and OEM partners:

1. Compact and Space-Saving StructureThe welded end cap design eliminates tie rods, reducing the overall size while improving mechanical strength. This allows for installation in limited spaces.

2. Superior Strength and DurabilityThe cylinder barrel and end caps are welded together, forming a solid body that withstands high working pressures and side loads without leakage or deformation.

3. Enhanced Seal ReliabilityDouble-lip or multi-layer sealing systems minimize internal and external leakage, ensuring stable performance over long service periods.

4. Smooth OperationThe use of honed tubes and hard chrome-plated rods ensures smooth movement, low friction, and high wear resistance.

5. Customizable Design OptionsCylinder bore, stroke, mounting style, and port positions can be fully customized according to your machinery and working environment.

6. Long Service Life with Low MaintenanceRobust welding structure and high-quality materials extend cylinder lifespan, reducing downtime and maintenance costs.

Welded Hydraulic Cylinder Manufacturing Process

Each EASTAI Welded Hydraulic Cylinder is produced under strict manufacturing and inspection standards to ensure consistency and precision:

1. Material SelectionHigh-strength alloy steel and seamless honed tubes are carefully chosen based on application requirements. Common materials include ST52, CK45, and 27SiMn.

2. Tube Honing and BoringThe cylinder barrel undergoes precision honing or skived and roller burnished processing to achieve a mirror-like surface finish and correct dimensional tolerance.

3. Rod Chrome PlatingPiston rods are induction-hardened and plated with 20–30 μm of hard chrome, providing excellent corrosion resistance and wear performance.

4. Welding and AssemblyThe end caps, ports, and mounting components are welded to the barrel using automatic MIG or TIG welding equipment to ensure uniform penetration and strong joints.

5. Heat TreatmentAfter welding, the components are stress-relieved and normalized to ensure long-term stability and toughness.

6. Painting and Surface ProtectionCylinders are treated with anti-rust oil and coated with a durable epoxy or polyurethane paint for superior corrosion protection in harsh outdoor environments.

7. Final Inspection and TestingEach cylinder is pressure-tested to 125% of the rated pressure to guarantee leak-free operation before shipment.

Welded Hydraulic Cylinder Product Details

Applications of Welded Hydraulic Cylinder

EASTAI’s Welded Hydraulic Cylinders are designed for a wide range of heavy-duty applications that require compact construction and powerful output:

Construction Equipment: Excavators, bulldozers, loaders, dump trucks, compactors

Agricultural Machinery: Tractors, harvesters, sprayers, balers

Mining Equipment: Underground loaders, drilling rigs, crushers, and mining trucks

Industrial Systems: Hydraulic presses, material handling, machine tools

Marine and Offshore Equipment: Deck machinery, cranes, lifting platforms

Renewable Energy: Wind turbine pitch control and hydraulic locking systems

The welded design ensures stability under vibration, shock, and extreme working conditions — making it ideal for mobile and off-road hydraulic systems.

EASTAI Factory Inventory and Production Capacity

EASTAI maintains over 10,000 tons of raw material stock and a factory area exceeding 8,000 m², ensuring rapid order fulfillment and short delivery times.

Raw Material Inventory: Honed tubes, chrome rods, and alloy steel pipes in all standard sizes.

Production Capacity: Over 50,000 hydraulic cylinders per year.

Delivery Promise: Orders shipped within 7–15 working days depending on customization.

Global Shipping: Fast export service with wooden box packing and moisture protection.

Our production system integrates CNC machining centers, automatic welding lines, honing machines, and hydraulic testing stations, ensuring each Welded Hydraulic Cylinder meets global quality standards.

Welded Hydraulic Cylinder Quality Control and Inspection

To ensure superior reliability and performance, EASTAI implements a multi-stage inspection process:

1. Incoming Material Inspection – Each steel tube and rod undergoes chemical composition and mechanical property testing.

2. Process Inspection – Dimensional and surface accuracy checks during honing, welding, and machining.

3. Pressure Test – Every cylinder is tested under 1.25 times working pressure for leakage and performance.

4. Surface Treatment Test – Salt spray corrosion resistance and coating adhesion testing.

5. Final Inspection – Full traceability record and test report provided for each batch.

EASTAI’s Welded Hydraulic Cylinders are guaranteed for consistent performance and durability, ensuring reliability for every distributor and engineering project.

Welded Hydraulic Cylinder Certifications

EASTAI’s commitment to quality and safety is verified by international certifications:

ISO 9001 Quality Management System

GL AMM (Germanischer Lloyd Approval of Material Manufacturers)

SGS Material and Dimensional Inspection Reports

CE Compliance for Export Markets

These certifications confirm our ability to supply Welded Hydraulic Cylinders that meet the highest global standards for material quality, production accuracy, and performance stability.