42CrMo4 Honed Tube

Advantages of 42CrMo4 Honed Tube

High Strength and Toughness

Manufactured from alloy steel, 42CrMo4 provides outstanding yield strength, tensile strength, and resistance to mechanical stress.

Excellent Wear Resistance

Suitable for high-cycle hydraulic applications where abrasion resistance is critical.

Superior Fatigue Resistance

Handles repetitive pressure fluctuations without cracking or deformation.

Dimensional Accuracy

Honed to precise tolerance, ensuring perfect fit between piston and cylinder.

Smooth Bore Finish

The polished inner surface minimizes friction and extends seal life.

Corrosion Protection

Optional anti-rust oil, phosphate coating, or chrome plating available for enhanced durability.

Versatility

Applicable to hydraulic cylinders, machine tools, lifting platforms, offshore equipment, and mining machinery.

Production Process of 42CrMo4 Honed Tube

The manufacturing of honed tubes involves multiple steps to achieve the required surface finish, tolerance, and mechanical strength. Below is the typical process flow for 42CrMo4 Honed Tube:

Raw Material Selection

High-quality 42CrMo4 alloy steel is sourced, ensuring compliance with international standards such as EN 10297 and DIN 2391.

Hot Rolling or Cold Drawing

The raw steel billet undergoes hot rolling or cold drawing to form seamless tubes with the required outer diameter.

Heat Treatment (Quenching and Tempering)

To achieve the desired hardness, toughness, and tensile strength, the tubes are quenched and tempered according to precise heat treatment cycles.

Boring / Pre-Machining

The inner diameter is rough machined to prepare for honing or skiving & roller burnishing.

Honing or Skiving & Roller Burnishing

The honing process removes surface irregularities, while skiving & roller burnishing creates a mirror-like smooth bore surface with Ra 0.2–0.4 μm finish.

Dimensional Calibration

Tubes are measured to guarantee tight tolerances (ISO H8/H9) for ID and roundness.

Surface Protection

The inner and outer surfaces are treated with anti-rust oil to prevent oxidation during storage and shipment.

l Inspection

Every tube undergoes 100% quality inspection before packaging and delivery.

42CrMo4 Honed Tube Application Scenarios

The 42CrMo4 Honed Tube is engineered for high-load and high-pressure hydraulic applications. It is widely used across industries such as:

Construction Machinery

Excavators, loaders, bulldozers, and cranes require honed tubes with excellent fatigue resistance.

Agricultural Equipment

Hydraulic cylinders in tractors, harvesters, and plows demand durability and smooth operation.

Mining Machinery

Drill rigs, dump trucks, and crushers benefit from the strength and wear resistance of 42CrMo4.

Industrial Equipment

Machine tools, presses, and automation systems require precision honed tubes for hydraulic systems.

Marine & Offshore Equipment

Hydraulic cylinders for ships, offshore rigs, and port cranes must withstand harsh, corrosive environments.

Energy Sector

Used in hydraulic systems of wind turbines, oilfield equipment, and power plants.

42CrMo4 Honed Tube Factory Inventory

Our factory maintains a large stock of 42CrMo4 honed tubes in standard sizes to meet urgent delivery requirements.

Over 2000+ tons of seamless honed tubes in stock

Standard sizes ready for immediate shipment

Custom sizes available on request

Global delivery service with export packaging

42CrMo4 Honed Tube Quality Testing

Every 42CrMo4 Honed Tube undergoes strict quality inspections before leaving the factory:

Chemical Composition Analysis 

ensures compliance with EN 10297 & DIN standards.

Mechanical Property Testing

yield strength, tensile strength, hardness, and elongation checked.

Ultrasonic Flaw Detection

detects internal cracks or inclusions.

Dimensional Inspection

OD, ID, wall thickness, and tolerance measurement.

Surface Roughness Test

verifies smooth bore finish.

Straightness and Roundness Inspection

ensures accurate geometry.

Hydraulic Pressure Test (optional)

verifies performance under working pressure.

Certificates

Our 42CrMo4 Honed Tubes are certified by international authorities, including:

ISO 9001 Quality Management System

Material Test Certificates (EN 10204 3.1 / 3.2)

Third-Party Inspection Reports (SGS, BV, TUV)

GL Approval of Material Manufacturers (AMM)

These certifications ensure that every tube delivered to customers meets global quality standards.