Mandrel bending uses an internal support (the mandrel) to bend pipe without collapsing or pinching the walls, keeping the internal diameter consistent all the way through the bend – unlike a cheaper crush bend, which narrows at the bend and restricts flow. We stock stainless steel mandrel bends in a range of angles for custom fabrication, alongside straight pipe and tubing.

What's the difference between a mandrel bend and a crush bend?

A mandrel bend uses an internal support to keep the pipe's diameter consistent through the bend, while a crush bend pinches and narrows the pipe at the bend, restricting exhaust flow.

Why does mandrel bending matter for exhaust performance?

Keeping a consistent internal diameter through every bend reduces turbulence and backpressure, which matters most on performance and turbocharged applications where exhaust flow directly affects power and response.

What bend angles are mandrel bends available in?

Common angles include 15°, 30°, 45°, 60°, 90° and 180° U-bends, allowing fabricators to route pipe around chassis components while maintaining flow.

Are mandrel bends available in different materials?

Yes, mandrel bends are typically available in both mild steel and stainless steel, with stainless the preferred choice for long-term corrosion resistance.