1. Material & Manufacturing

• Type: Automotive Precision Seamless Tube

• Standards: EN 10305-1 / DIN 2391 / ASTM A519

• Process: Cold-drawn seamless process with high dimensional accuracy

• Surface Finish: Smooth surface, rust-preventive oil coating, optional galvanization

2. Key Features

✔ High Dimensional Precision – Suitable for automotive assembly and machining
✔ Excellent Mechanical Properties – High strength and fatigue resistance
✔ Corrosion Resistance – Optional stainless or coated finish for longer life
✔ Versatility – Can be customized for different automotive applications

3. Applications

• Automotive Drive Shaft Tubes

• Exhaust System Tubes

• Steering Columns

• Chassis and Suspension Components

4. Certifications

• ISO/TS 16949 (Automotive Quality Management)

• ISO 9001 Quality System

• Mill Test Certificate (EN 10204 3.1)

Frequently Asked Questions (FAQ)

1. Are you a manufacturer or trading company?
We are a manufacturer with our own factory located in Hebei, China.

2. What materials do you offer?

• Stainless Steel: 304, 304L, 316, 316L, 321, etc.

• Carbon Steel: ASTM A105, ASTM A350 LF2, Q235, Q345, etc.

• Alloy Steel: ASTM A182 F11, F22, F5, etc.

3. Which standards do your products comply with?
ASME B16.5, ANSI, ASTM, DIN, JIS, EN, GB — with third-party inspection available.

4. Do you support OEM/ODM customization?
Yes, we provide custom machining, coating, marking, and packaging based on your drawings.

5. What is your minimum order quantity (MOQ)?
MOQ is typically 1 piece for standard items; customized parts may vary.

6. Do you provide free samples?
Yes, free samples for standard sizes are available; buyers cover shipping cost.

7. What is your delivery time?

• In-stock: 3–5 working days

• Bulk/custom orders: 10–25 working days

8. How do you ensure product quality?
We perform full inspection: raw material verification, dimensional checks, pressure/leak tests, and surface finish inspection. Third-party testing is available upon request.