Metal Substrate

Why Metal Substrates with Integrated Flanges Work Better

Lately, more DOC and DOC+DPF systems are using metal substrates with integrated flanges. It’s not just a design trend — it actually makes life easier in the field.

Sealing is solid. Since the flange is part of the substrate, alignment problems are mostly gone. On the line, installation is simple: drop it in, line up the bolts, tighten, done. Fewer leaks, less rework.

Handles vibration better. A one-piece flange keeps the substrate stiffer. Round designs, especially, survive harsh vibration and repeated heat cycles without warping or stressing the welds.

Assembly is simpler. Factory alignment means fewer mistakes. No twisted substrates, no uneven flow, no hotspots, and coating stays intact. Production moves faster, and quality is more consistent.

Maintenance is easier. Need to replace a substrate? Loosen the bolts, swap it out, put it back. No cutting, no welding, no headache.

Thermal stability. Heat cycles cause less stress, and the coating stays put. Everything lasts longer.

Same footprint, more reliability. The external size doesn’t change, but the built-in flange keeps everything lined up and stiff. The result: longer life and predictable performance.

In short, metal substrates with integrated flanges give better sealing, stronger vibration resistance, simpler installation, easier maintenance, and reliable performance. Small tweak, big impact.