Cold drawn seamless steel tubes are commonly used in the manufacturing of automotive bushes and sleeves due to their high precision, smooth surface finish, and excellent mechanical properties.

 

Material	Grades
Carbon Steel	SAE 1010, SAE 1020, SAE 1045, etc.
Stainless Steel	304, 316, 410, 17-4 PH, etc.
Alloy Steel	AISI 4130, AISI 4140, AISI 4340, etc.

 

1. GB/T 3639-2009: National standard for seamless cold-drawn or cold-rolled steel tubes, covering common carbon and alloy steels.

2. ASTM A519: Standard issued by the American Society for Testing and Materials, applicable to seamless carbon and alloy steel tubes for mechanical purposes.

3. DIN 2391: German standard specifying seamless precision steel tubes produced by cold drawing or cold rolling.

 

1. Precision Machining: Automotive liners and bushings made from cold-drawn seamless steel tubes exhibit high precision and surface finish, suitable for applications with strict dimensional and surface quality requirements.

2. Excellent Mechanical Properties: These tubes possess high strength, hardness, and wear resistance, meeting the demands for load-bearing and wear resistance in automotive applications.

3. Seamless Nature: As seamless tubes, they lack welding defects, enhancing overall reliability and durability.

4. Corrosion Resistance: Surface treatments like galvanization and phosphating can be applied as needed, improving corrosion resistance for use in harsh environments.

5. Various Specifications: Cold-drawn seamless steel tubes can be produced in a variety of specifications and sizes, catering to different design requirements for automotive liners and bushings.

 

Cold-drawn seamless steel tubes are an ideal material for manufacturing automotive liners and bushings due to their precision machining, excellent mechanical properties, and availability in various specifications. Choosing appropriate materials and production standards ensures these components deliver superior performance and reliability in automotive applications. It is essential to consider the specific requirements of the application, including load-bearing capacity, environmental conditions, and dimensional precision. Additionally, adherence to quality standards and industry specifications is crucial for ensuring the reliability and performance of the components.