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ST52 Honed Tube

ST52 Honed Tube is a high-precision seamless steel tube widely used in hydraulic cylinders, machinery, and engineering applications. With excellent surface finish, accurate dimensional tolerance, and superior strength, it ensures smooth piston movement and extended service life. Manufactured with advanced honing technology, our ST52 Honed Tube provides exceptional wear resistance, corrosion protection, and reliable performance for demanding hydraulic and industrial systems.

  • Model:Honed Tube

  • Brand:EAST AI

  • Material:ST52

  • Length:Max. 13m

  • ID Tolerance:H8~H10

  • Straightness:0.5/1000

  • Application:Hydraulic cylinders for mobile equipment, industrial machinery, and heavy-duty systems

  • Packing:Wooden cases

  • Roughness:≤0.4u

Product Description

Advantages of ST52 Honed Tube


High Strength and Durability


ST52 steel grade delivers excellent yield strength and tensile properties for demanding hydraulic applications.


Superior Surface Finish


Honing or skived & roller burnished processes guarantee low roughness (Ra ≤ 0.2–0.4 μm), extending cylinder seal life.


Accurate Dimensional Tolerances


Bore tolerances are strictly controlled, ensuring seamless piston rod movement.


Reduced Friction and Energy Loss


Smooth internal bore improves efficiency and minimizes wear.


Corrosion Resistance Options


Available with optional protective coatings or plating for extended service in harsh environments.


Wide Size Range


 Supplied in various inner diameters, wall thicknesses, and lengths to meet different project requirements.


Proven Reliability


Trusted by global OEMs and cylinder manufacturers for consistent performance.


Production Process of ST52 Honed Tube

To achieve its high-quality finish and performance, the ST52 Honed Tube undergoes a precise and controlled production process:

  1. Raw Material Selection

    High-grade ST52 seamless steel tubes are sourced to ensure consistency and mechanical strength.

  2. Cold Drawing or Hot Rolling

    The tubes are drawn or rolled to refine grain structure, enhance dimensional accuracy, and improve surface quality.

  3. Heat Treatment

    Normalizing or stress relieving improves toughness and eliminates internal stresses.

  4. Boring & Turning

    The inner diameter is rough-machined to remove defects and prepare for precision finishing.

  5. Honing or Skiving & Roller Burnishing

    Final machining ensures exact dimensional tolerances and mirror-like surface finish.

  6. Cleaning & Deburring

    Tubes are cleaned thoroughly to remove oil, dust, and metal residues.

  7. Inspection & Testing

    Dimensional checks, surface roughness measurement, hardness, and pressure testing guarantee product compliance.

  8. Packaging & Stocking

    Each tube is carefully packed with protective end caps, anti-rust oil, and seaworthy packaging for global delivery.


ST52 Honed Tube Application Scenarios

The ST52 Honed Tube is widely used in various hydraulic and pneumatic systems where strength, precision, and durability are critical:


Hydraulic Cylinder Barrels


Main component for mobile equipment cylinders in construction and agriculture.


Pneumatic Cylinders


Smooth internal finish ensures efficient compressed air operation.


Mining and Quarrying Machinery


Withstands harsh conditions in loaders, crushers, and drilling rigs.


Oil & Gas Industry


Used in hydraulic systems of offshore rigs and onshore equipment.


Industrial Automation


Facilitates precise motion control in presses, robotics, and machine tools.


Marine and Offshore Equipment


Ensures reliable performance in winches, cranes, and deck machinery.


Material Handling Equipment


Forklifts, cranes, and lifting platforms rely on ST52 honed tubes for hydraulic actuation.


Factory Inventory

Our factory maintains a large inventory of ST52 Honed Tubes to ensure quick delivery for global customers.

Standard sizes always in stock

covering most hydraulic cylinder applications.

Customized dimensions available

tailored production for OEM and project-specific requirements.

Warehouse capacity

Over 5,000 tons of honed and SRB tubes in ready-to-ship condition.

Global logistics support 

Fast dispatch from Wuxi (near Shanghai port) for worldwide delivery.

This allows distributors, stockists, and engineering companies to reduce lead times and secure continuous supply.


ST52 Honed Tube Quality Inspection

Every ST52 Honed Tube undergoes strict quality control before shipment. Our quality department is equipped with advanced testing instruments to guarantee product consistency:


Chemical Composition Analysis


Spectrometer testing ensures compliance with ST52 steel grade.


Dimensional Inspection


Bore diameter, wall thickness, and straightness checked with precision instruments.


Surface Roughness Testing


Ensures Ra value meets required tolerance for seal life.


Hardness Testing


Verifies mechanical strength and uniformity.


Hydrostatic Pressure Test


Confirms leak-proof performance under high pressure.


Salt Spray Test (Optional)


For coated or plated tubes to verify corrosion resistance.


Certificates

Our ST52 Honed Tubes are manufactured under strict quality systems and come with complete documentation:


ISO 9001:2015 Quality Management Certificate

GL Approval of Material Manufacturers (AMM)

Material Test Certificate (EN 10204 3.1/3.2)

Third-party inspection reports (SGS, BV, TUV available on request)


These certificates assure distributors and engineering companies of the product’s traceability, reliability, and compliance with international standards.


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