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.
Final 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.
