Diamond plate is also known as checker plate, tread plate and floor plate, it is a type of metal stock with a regular pattern of raised diamonds or lines on one side, with the reverse side being featureless, it is usually steel, stainless steel or aluminum.  The added texture reduces the risk of slipping, making diamond plate a solution for stairs, catwalks, walkways, and ramps in industrial settings.  It is frequently used on the interior of ambulances and on the footplates of firetrucks. Additional applications include truck beds and trailer floors.

The attractive appearance of Diamond Plate makes it a popular choice for truck beds, open components and stairways. It is used extensively for decks, catwalks, trench covers, platforms, running board steps, dock boards, truck compartment and tool storage boxes, conveyors, floors, etc.

Mark Metals maintains a large inventory of commercial-grade plate including carbon steel, stainless steel, galvanized, and aluminum.  Our metal inventory is available for quick pick-up in our Reading, Pennsylvania location or we can deliver to your job-site within a 60-mile radius of our facility.  We can also ship nationwide through common carriers.

Regardless of the size of your order, Mark Metals is known for their personalized treatment from beginning to end. Each order is treated as though it is our only order. If an item is not in our stock we will special order it for you. We get you what you need.


Standard Diamond Plate Sizes

Diamond Plate Sizes (Custom Cuts Available)


  • 12″ x 12″
  • 24″ x 24″
  • 48″ x 48″
  • 48″ x 96″
  • 96″ x 240″
Diamond Plate Weights / Gauges (Other Weights Available by Order)
  • 1/8″
  • 3/16″
  • 1/4″
  • 3/8″
  • 1/2″
  • 5/8″
  • 3/4″
  • 1 Inch
Diamond Plate Metal Types


  • Steel
  • Stainless Steel
  • Carbon Steel
  • Galvanized
  • Aluminum

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