The automotive industry relies on precision-engineered materials to ensure vehicle safety, performance, and durability. Seamless steel tubes are widely used in automotive chassis systems, suspension components, transmission parts, drive shafts, and hydraulic assemblies.
Cold-drawn seamless tubes provide superior dimensional accuracy and smooth surface finishes, reducing machining requirements and improving manufacturing efficiency. Their excellent mechanical properties contribute to enhanced component reliability and service life.
Automotive manufacturers require strict quality standards and consistent product performance. Our seamless steel tubes undergo comprehensive inspection procedures to ensure compliance with international automotive specifications.
With advanced production technology and extensive export experience, we supply precision seamless tubing solutions for customers worldwide.
Basic Product Data
| Item | Description |
| Applicable Standard | GB/T8162 |
| Representative Steel Grades | 20、45、Q345、45Mn2、35CrMo、4130、4140、4137 |
| Size Range | φ51~710×6~80×6000~12000mm |
Key Product Features
Suitable for general structural and mechanical applications, it is one of the most widely used types of seamless steel pipe.
Materials include carbon steel (20#, 45#) and various alloy steels (Q345, 35CrMo, 42CrMo, etc.).
Application Scenarios and Industries
It is primarily used in mechanical structures and general engineering structures, and is employed in the manufacture of pipes, vessels, equipment, pipe fittings, and steel structures. Grades 20# and 45# are mainly used in general engineering machinery or as raw material for cold-drawn low-pressure hydraulic cylinders.