Marine Main Engine Exhaust Systems | New - Repowers - Repairs

Precision Engineering & Metals Fabrication

DeAngelo Marine can meet certification standards & specifications of ABS, LLoyds, DNV, RINA, ABYC, and other maritime agencies.

Yachts & Boats – Power & Sail • Commerical & Military Vessels

DeAngelo Marine Exhaust has designed, engineered & fabricated main engine diesel exhaust systems and generator exhaust solutions for some of the finest yacht & boat builders in the United States and Europe. DeAngelo Marine is also proud of being consistently chosen for work involving the demanding needs associated with commercial and military-grade vessels around the world.

Design requirements are as various as the vessel’s they are for, and the engineering team at DeAngelo is ready to meet and exceed them.

Quality Assurance: DeAngelo Marine Exhaust has a fully equipped quality assurance department to monitor product quality. Our efforts are compliant with the Automotive Industry Action Group (AIAG) with Cummins Marine, Detroit Diesel, and John Deere in Advanced Product Quality Planning (APQP) and Production Part Approval Process (PPAP).

At DeAngelo Marine We Fabricate Custom, Cutting-Edge Main Engine Exhaust Systems & Marine Mufflers for Yachts, Boats & Ships

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316L and Inconel alloy metals
Fabricate our own elbows in tube size to ensure perfect fit
5086 aluminum when needed
Passivation process to improve corrosion resistance
AWS certified TIG welders
Hard coat lagging or blanket insulation
Wide range of silencer packages
Finishes include matte, polished, powder coated or electroplate
Quality Assurance program to meet QS9000 quality standards

What Our Customers are Saying

Our company’s experience with DeAngelo Marine Exhaust was superb in all respects, especially quality of finished product. Thank you DeAngelo Marine!
Testimonials

… I have had the opportunity to work with Freddy on more than one occasion and, whatever the duration of the job, Freddy has displayed his technical knowledge in a very helpful, personable and straight forward way …
Testimonials

I would like to thank you for doing a great job on the new wet injection exhaust elbows for the San Juan 48 “Seawalker”. Your newly manufactured parts fit perfectly!.
Testimonials

Jorge and the DeAngelo team upgraded our exhaust system, and the result is much better than the original. We particularly appreciated the choice of Inconel metal
Testimonials

I know of numerous prestigious builders that use their systems and they are the only company I recommend to clients and yacht manufacturers ... I give a full unquestionable recommendation for DeAngelo Marine Exhaust ...
Testimonials

COMPONENTS

In our manufacturing and fabrication process, DeAngelo Marine uses different stainless steel alloys like 316L, 321 and AL6XN. The high nickel and molybdenum contents of the AL6XN alloy give it good resistance to chloride stress-corrosion cracking.

We also form our own elbows using dies so that components are fabricated in tube, not pipe size.

DeAngelo Marine uses 5086 aluminum where aluminum metal may be specified. 5086 has a higher strength than 5082 and 5083.

Many of our components are built in-house and kept in inventory, this helps us improve our turnaround time.

WELDING PROCESS

DeAngelo Marine prides itself on Tungsten Inert Gas (TIG) aircraft quality welds made by our skilled & certified fabricators.

Creating a perfect weld environment is of the utmost importance and a desired corrosion resistance depends on preparation. Precautions are taken to protect seam exposure and to minimize oxidation.

Weld areas are protected from atmospheric contamination by purging ambient air introducing the inert gas, Argon.

DeAngelo Marine maintains a 1625 gallon Argon tank on site.

PASSIVATION

In the context of chemistry & engineering, becoming “passive” means being less affected or corroded by the environment of future. The passivation process improves the corrosion resistance properties of stainless steel components.

It recovers the surface condition of stainless steel by dissolving iron that has been imbedded in the manufacturing process.

Passivation consists of immersing stainless steel components in a nitric acid tank, which dissolves the imbedded iron and restores the original corrosion-resistant surface after the fabrication process.