Cold Rolled Seamless Steel Pipe

Product Overview

Cold Rolled Seamless Steel Pipe is a high-precision steel tube manufactured from hot-rolled seamless pipe through cold drawing or cold rolling processes.

This process significantly improves:

• Dimensional accuracy

• Surface smoothness

• Mechanical strength

• Fatigue resistance under pressure

It is specifically designed for hydraulic systems, precision machinery, automotive components, and industrial pressure applications where performance stability is critical.

Technical Specifications

Why Cold Rolled Seamless Pipe

Precision Stability
Cold working reduces dimensional deviation, making it suitable for tight-tolerance assembly systems.

Pressure Performance Improvement
Improved grain structure enhances resistance to internal pressure and cyclic loading.

Surface Quality Advantage
Smooth internal surface reduces fluid resistance and improves hydraulic efficiency.

Long-Term Operational Reliability
More stable performance under continuous mechanical stress.

Mechanical Properties

Tensile Strength: 410 – 850 MPa
Yield Strength: 245 – 600 MPa
Elongation: 10% – 25%
Hardness: Controlled per grade
Straightness: Precision controlled for assembly systems

Application Industries

Where material failure is not an option, our precision pipes deliver continuous performance:

Hydraulic & Pneumatic Systems: Hydraulic cylinders, high-pressure fluid pipelines, power transmission systems.

Precision Machinery: Industrial automation tracks, CNC structural components, heavy-duty load-bearing shafts.

Automotive Engineering: Shock absorber tubes, steering column cylinders, precision drive shafts.

Energy & Fluid Delivery: Instrumentation tubing, chemical processing loops, gas-liquid heat exchanger tubes.

Engineering Quality Control System

To ensure consistency in global supply, every pipe undergoes strict inspection:
• Chemical composition verification
• Mechanical property testing
• Hydrostatic pressure testing
• Ultrasonic testing (UT)
• Eddy current testing (ET)
• Dimensional accuracy inspection
• Surface defect detection
• Straightness and bending validation

Marine & Long-Distance Export Protection

Industrial components must arrive in pristine condition regardless of maritime moisture or transit duration.

Anti-Corrosion Prep: Inner and outer surfaces treated with premium industrial anti-rust oil.

Bundling & Structural Support: Securely fastened with high-tensile steel strips and heavy-duty lifting slings.

Moisture Barriers: Wrapped entirely in multi-layer waterproof woven plastics or VCI (Volatile Corrosion Inhibitor) film.

Physical Protection: Impact-resistant plastic end-caps protect tube bevels; optional ISPM-15 compliant wooden boxes/steel frames are available for project shipments.

Why Global Buyers Choose Youcheng

Stable Industrial Supply Capability
Multiple production lines ensure continuous supply for bulk orders and long-term contracts.

Engineering-Oriented Quality System
Manufactured and inspected according to ASTM / DIN / EN standards with strict tolerance control.

Export Experience Across Industrial Markets
Supplying steel pipe solutions to:
• Industrial machinery manufacturers
• Hydraulic system producers
• Engineering contractors

EPC & OEM Project Support Capability
We support long-term supply contracts for:
• Hydraulic cylinder factories
• Mechanical OEM manufacturers
• Industrial equipment integrators

Technical Documentation Package
• EN 10204 3.1 Mill Test Certificate
• Chemical & mechanical test reports
• Third-party inspection (SGS / BV / TPI optional)
• Export compliance documentation

Our Certificate

Frequently Asked Questions