Precision O.D. Ground Hydraulic Tube
Brand Positioning Statement
Precision hydraulic tubing engineered for zero-leakage, high-pressure industrial systems with verified dimensional accuracy and batch traceable quality control.
Product Introduction
Our Precision O.D. Ground Hydraulic Tubes are manufactured from cold drawn seamless steel tubes and processed through precision outer diameter grinding, controlled NBK heat treatment, and full inspection systems to ensure consistent performance in high-pressure hydraulic applications.
Production complies with EN 10305-4 and DIN 2391 standards, ensuring stable mechanical properties, tight tolerances, and repeatable quality for OEM manufacturers and industrial distributors worldwide.
All production batches are fully traceable from raw material heat number to final inspection records, ensuring verified quality control and procurement risk reduction.
Why Choose Us
Verified cold drawn seamless production system.
Precision O.D. grinding for stable dimensional control.
Fully traceable batch quality system.
Tested pressure resistance for hydraulic safety.
Third-party inspection available (SGS / BV / TÜV).
Consistent OEM supply capability.
Verified Manufacturing Capability
Our hydraulic tube production is built on a fully controlled industrial manufacturing system designed for OEM and long-term wholesale supply.
Production Infrastructure
Cold drawn seamless tube production lines
Precision O.D. grinding systems
NBK heat treatment furnaces
Straightening and calibration equipment
In-house testing laboratory
Production Capability
Stable mass production for industrial orders
Continuous OEM supply capability
Long-term contract manufacturing support
Flexible customization for engineering requirements
Visual & Verification Evidence
To ensure full buyer confidence, we provide verified production and quality evidence upon request.
Available Verification Materials:
Real factory workshop photos.
Cold drawing production line videos.
O.D. grinding process footage.
Heat treatment furnace operation images.
Hydrostatic pressure testing records.
Eddy current inspection process videos.
Warehouse stock and packaging area images.
Container loading and export shipment photos.
EN 10204 3.1 certificate samples with batch traceability.
Certified Quality System & Independent Inspection
We operate under internationally recognized industrial quality systems.
Certifications:
ISO 9001 Quality Management System
EN 10305-4 / DIN 2391 compliance
EN 10204 3.1 material certification per batch
Independent Inspection (Optional):
SGS inspection
Bureau Veritas (BV) inspection
TÜV Rheinland inspection
High Dimensional Accuracy
Precision cold drawing combined with O.D. grinding ensures strict dimensional consistency.
•Outer diameter tolerance: up to ±0.05 mm (EN standard range)
•Stable geometry for hydraulic assembly systems
Engineering Benefit:
Improves fitting accuracy, reduces leakage risk, and ensures stable performance in high-pressure hydraulic environments.
Surface Quality Control
Each tube undergoes precision grinding and calibrated surface measurement.
•Surface roughness: Ra ≤ 0.8 μm
Engineering Benefit:
Enhances sealing reliability and reduces wear on hydraulic seals and connectors.
Pressure Safety
All hydraulic tubes are produced from seamless steel and undergo strict pressure testing.
Testing Methods
Hydrostatic pressure testing
Eddy current defect detection
Engineering Advantage
Eliminates weld seam failure risk and ensures long-term hydraulic system stability.
Heat Treatment & Formability
Controlled NBK heat treatment ensures stable mechanical performance.
Excellent bending capability
Stable flaring and forming
No cracking during fabrication
Internal Cleanliness
Internal surfaces are cleaned and protected to reduce contamination risk.
Protection Process:
Internal cleaning after production
Anti-corrosion oil application
Plastic end cap sealing
System Protection Logic:
Prevents contamination-related failures such as pump wear, valve blockage, and seal damage.
Batch Traceability & Quality Control System
Each production batch is fully traceable from raw material to finished product.
Inspection System:
- Chemical composition analysis
- Mechanical property testing
- Dimensional inspection
- Surface roughness measurement
- Hydrostatic testing
- Eddy current testing
- Straightness inspection
Traceability System:
Each batch is linked to heat number and production records for full transparency and audit-ready quality control.
Global Industrial Application
Our hydraulic tubes are widely used in:
Hydraulic cylinder manufacturing.
Construction machinery (excavators, loaders, cranes).
Agricultural machinery systems.
Industrial automation equipment.
CNC hydraulic systems.
Automotive hydraulic pipelines.
Heavy equipment manufacturing.
Fluid power transmission systems.
Manufacturing Process
Raw Material Inspection (Heat Number Tracking)
Cold Drawing
NBK Heat Treatment
Precision O.D. Grinding
Straightening
Dimensional Inspection
Surface Inspection
Cleaning Process
Pressure Testing
Final Inspection
Export Packaging
Quality Documentation Package
EN 10204 3.1 Material Certificate
Dimensional inspection report
Pressure test report
Surface quality report
Full batch traceability record
Packaging & Export Protection
Anti-rust oil protection
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Plastic end caps
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Waterproof wrapping
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Steel bundle or wooden case packaging
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Sea freight export packaging
FAQ
Q: Can I verify your factory before ordering?
A: Yes. We provide factory videos, production line images, and third-party inspection reports for verification.
Q: Do you support third-party inspection?
A: Yes. SGS, BV, or TÜV inspection can be arranged before shipment.
Q: What makes your hydraulic tubes different?
A: Our tubes combine seamless structure, precision grinding, and batch traceability to reduce hydraulic system failure risk.
Q: What is your production capacity?
A: We maintain stable industrial-scale production for OEM and long-term wholesale supply.
Q: How do you ensure consistent quality?
A: Through standardized production processes, strict raw material control, and full batch traceability inspection systems.
Q: Do you support OEM customization?
A: Yes. We support customized dimensions, tolerances, and packaging for industrial applications.
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