Automotive Steel Tube

Product Definition

Automotive steel pipes are precision pipes designed specifically for the automotive industry, covering key parts such as chassis systems, powertrains, body structures and safety components. They must meet stringent requirements such as lightweight, high strength and fatigue resistance, and comply with global automotive industry standards (such as ISO 9001/IATF 16949).

Key performance indicators

Lightweight: thin-walled high-strength steel (wall thickness 1.0-5.0mm, tensile strength 500-1200MPa)

Fatigue life:≥10⁷cycles (SAE J1099 test standard) 

Formability:

Expansion rate≥30% (hydraulic pipe) 

Bending radius≤2D (structural pipe)

Corrosion resistance: 

Salt spray test≥720h (galvanized pipe)

High temperature oxidation weight gain≤2mg/cm²(exhaust pipe)