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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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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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


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 presses range from 175 to 400 tons, which are 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 automated and manual 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.

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

Metal Stamping
Stamped Parts

Material & Coating Types


  • 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


  • 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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  • Zinc
  • Zinc Nickle
  • Magni
  • Phosphate


  • A-Coat
  • E-Coat
  • Powder Coat


  • Deburr
  • Grinding
  • Part Washing
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