Stainless Steel Tubing for Automotive Exhausts & Trim

Engineered for Performance. Heat Resistant, Highly Formable, and Precision Polished.

The Engineering Standard

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Built to Meet Automotive Standards

The automotive industry demands zero defects. Xiyouwo understands that a tube is not just a pipe—it is a safety-critical component of a vehicle.

We strictly follow IATF 16949 compliant management systems. From raw material melting to final delivery, every batch of tubing comes with full Traceability and Mill Test Certificates (MTC). Whether you need ferritic 409L for mufflers or austenitic 304 for exhaust tips, we deliver material properties that match your forming requirements.

Key Applications

Exhaust Systems & Mufflers

409L / 439 Ferritic Stainless Steel: Designed for high-temperature resistance and oxidation resistance. Our tubes offer excellent perforation performance for internal muffler components.

Decorative Exhaust Tips

304 Stainless Steel (Mirror/Black PVD): The visual signature of the car. We provide high-gloss polished tubes that withstand exhaust heat without discoloring, ready for chrome plating or PVD coating.

Structural & Bumper Trim

High Strength & Formability: Used for bumper guards, grille trims, and headrest tubes. Our tubes pass strict Flaring and Flattening tests, ensuring they won't crack during complex bending and stamping.

High Expansion Rate

Automotive parts require extreme deformation. Our annealed tubes can achieve a high flare rate (expansion > 30%) without cracking, suitable for swaging and resizing.

Precision Perforation

For silencers and mufflers, we provide pre-punched or laser-cut tubing with precise hole patterns to optimize airflow and sound dampening.

400 Series Expertise

Unlike standard decorative mills, we have specialized welding technology for Ferritic Stainless Steel (409/430), ensuring strong weld seams that don't split under vibration.

Technical Capabilities

Project Gallery

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Perforated 409L stainless steel tube for automotive muffler internals

A tube with many small holes (perforated), looking industrial/matte.

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Mirror polished 304 stainless steel exhaust tip tubes for luxury vehicles

Highly polished, shiny exhaust tips (dual outlet or single), looking expensive.

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Precision bent stainless steel tubing for automotive bumper guards and structural trim

A bent tube used for bumper protection or seat frame.

Expert Q&A

Q1: Can you provide tubes specifically for bending?

A: Yes. We control the Elongation (A%) and Hardness (HRB) strictly. Our tubes are fully annealed to ensure they perform perfectly on CNC bending machines.

A: Yes. We supply 409L and 439 grades specifically for the automotive exhaust industry, offering a balance of heat resistance and cost-effectiveness.

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