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.

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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, progressive die stampings.

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Value Added Assemblies

Value-Added Assemblies

Our in-house robotic and manual welding (arc and resistance), tapping, staking, and hand assembly capabilities allows Dennen to take on a variety of different projects to support our customers needs.

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Metal Processing

Slitting is core competence at Dennen.  Since 1948 we have been transforming steel and stainless steel products to met our customers exacting specifications.

 

  • 72″ octagon slitting line
  • 60,000 lb coil capacity
  • .010” to .149” gage 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 allows us reduce or competently remove shape problems in the incoming steel coils.  Allowing us to meet some of the tightest flatness spec’s in the industry, which is ideally suited for processing Class A (exposed) blanks. 

Our secondary presses range from 175 to 400 tons, which are perfectly situated for offline staking, forming, and piercing operations.

Stamping

Value-Added Assemblies

Dennen’s in-house welding capabilities includes robotic MIG welding, manual projection welding (nut, stud, collar) and automated and manual spot welding. 

In addition to our welding capabilities, our tapping, staking and kitting capabilities allows is to manufacture a wide range of products to meet our customers diverse needs.

Additionally, Dennen provides a full range of coating, painting and finishing options. 

Metal Stamping
Stamped Parts

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

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Coating

  • Zinc
  • Zinc Nickle
  • Magni
  • Phosphate

Painting

  • A-Coat
  • E-Coat
  • Powder Coat

Finishing

  • Deburr
  • Grinding
  • Part Washing
GRAND RAPIDS

3033 Fruit Ridge Ave NW
Grand Rapids, MI  49544
USA
616-784-2000

BURNS HARBOR

325 Tech Dr.
Burns Harbor, IN  46368
USA
219-762-1333