Engineered for Mobility That Is Lighter, Safer and More Durable
From fuel and powertrain systems to steering and suspension, modern vehicles rely on seamless tubes that combine tight dimensional accuracy with long fatigue life. Dingxin manufactures a wide range of precision tubes for passenger cars, commercial vehicles and motorcycles under a fully integrated, IATF 16949 certified process.
Material & Specification
| Grade | Standard | Typical OD x WT (mm) | Delivery Condition | Key Properties |
|---|---|---|---|---|
| E235 | EN 10305-1 | 20-120 x 2-12 | Cold drawn, normalized | Good weldability, moderate strength |
| E355 | EN 10305-1 | 25-150 x 3-15 | Cold drawn | Higher strength for structural parts |
| 1020 | ASTM A519 | 19-200 x 2-20 | Cold drawn, annealed | General automotive structures |
| 1026 | ASTM A519 | 19-200 x 2-20 | Cold drawn | Higher carbon, improved strength |
| SAE 1541 | ASTM A519 | 25-90 x 3-12 | Cold drawn | Motorcycle front fork tubes |
Typical Applications & Parts
Fuel Rail Tube
High-cleanliness seamless tubing for direct-injection fuel rails where internal finish and dimensional control are critical.
Steering Column Tube
Precision tube for steering columns and shaft housings requiring consistent roundness and straightness.
Shock Absorber Tube
Damper bodies and rod housings built for cyclic load and corrosion resistance.
Powertrain & Transmission
Tubular components for drivetrain and transmission systems where fatigue life matters.
Motorcycle Front Fork
SAE 1536 / 1541 fork tubes supplied to tight OD and chrome-ready surface finish.
Key Technical Requirements
High fatigue life under cyclic bending and torsional loads
Tight OD, ID and wall-thickness tolerances for fit and function
Internal cleanliness for fuel-system and hydraulic applications
IATF 16949 certified process with full material traceability
Surface finish suitable for plating, chrome or painting
Dingxin Manufacturing Capability
In-House Integrated Process
From pierced billet to finished, inspected tube under one roof keeps tolerances and lead times controllable.
IATF 16949 System
Automotive-grade quality management with APQP-style controls and EN 10204 3.1 certificates.
Custom to Drawing
Tailor-made OD, wall thickness and length built to your part print and reference standard.
Consistent Supply
30,000+ tons annual capacity supports stable, on-time delivery to 24+ countries.
Frequently Asked Questions
Need Automotive Tubes to Your Drawing?
Send your part print and specification. Our engineering team will recommend the right grade, process and tolerance for fuel, steering, suspension or powertrain applications.
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