What We Do
Material Processing
Our in-house slitting capabilities combined with our mill-direct relationships provides our customers with a less complex, less risky supply chain solution than traditional stamping suppliers.
Stamping
Our press lines range in tonnage up to 600 tons with in-line roller leveling capabilities allowing us to produce Class A (exposed) blanks, configured blanks, and progressive die stampings.
Value-Added Assemblies
Our in-house robotic MIG and resistance welders, tapping, staking, and hand assembly capabilities allows Dennen to take on a variety of different projects to support our customers needs.
Material Processing
Slitting is a core competence at Dennen. Since 1948, we have been transforming steel and stainless steel products to meet our customers exacting specifications.
- 72″ octagon slitting line
- 60,000 lb coil capacity
- .010” to .149” gauge ranges
(gauge ranges may differ depending on material) - 72″ slit widths
- ID reduction 24” → 20”
- 30 ton crane capacity
- Looping pit
Stamping
With over 70 years of metals experience, Dennen’s manufacturing team has a unique understanding of the design and manufacturing of complex metal stampings. Our automatic presses range in tonnage from 275 to 600 tons, with bed sizes up to 144”, with the ability to handle coils up to 72” wide.
Our in-line roller leveling capabilities allow us to reduce or completely remove shape problems in the incoming steel coils. Allowing us to meet some of the tightest flatness specs in the industry, which is ideally suited for processing Class A (exposed) blanks.
Our secondary press, a Masterfab 175 ton, is perfectly situated for offline staking, forming, and piercing operations.
Value-Added Assemblies
Dennen’s in-house welding capabilities includes robotic MIG welding, manual projection welding (nut, stud, collar) and semi-automated spot welding.
In addition to our welding capabilities, our tapping, staking and kitting capabilities allows us to manufacture a wide range of products to meet our customers diverse needs. Additional capabilities have been added with our welder 2, welder 4, welder 5, tapping station, vision inspection, repack/sorting, and Cobot caulk cell.
Additionally, Dennen provides a full range of coating, painting and finishing options.
Material & Coating Types
Blanking
- Enameled Steel (Type 1 and 3)
- Low Carbon (270 Mpa)
- Coated Steel
- HSLA (320-780 Mpa)
- AHSS (590, 780, 980 Mpa)
- Stainless Steel (300 & 400 series) – Polished
Stamping
- Enameled Steel (Type 1 and 3)
- Low Carbon (270 Mpa)
- Coated Steel
- HSLA (320 Mpa)
- Stainless Steel (300 & 400 series) – Polished
Coating
- Zinc
- Zinc Nickle
- Magni
- Phosphate
Painting
- A-Coat
- E-Coat
- Powder Coat
Finishing
- Deburr
- Grinding
- Part Washing
Value-Added Services
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Robotic MIG welding
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Projection Welding
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Tapping
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Staking
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Fastening/ Assembly
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Vision Inspection
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RePacking/ Sorting
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Piercing
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Caulking
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Mailing Address:
P.O. Box 3200
Grand Rapids, MI 49501
Purchasing Terms & Conditions
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Claims Management Policy
ISO-9001 Certificates
GRAND RAPIDS
3033 Fruit Ridge Ave NW
Grand Rapids, MI 49544 USA
616-784-2000