Selection of Steel Merchants

Commonly found in structural applications such as joists, railings, and walkways, merchant bars can come in a variety of shapes. Steel merchants are generally used when welding, punching, or bending are required for a structure. Our massive inventory of steel merchants is available in standard lengths and grades for commercial construction, joist manufacturing, industrial fabrication, as well as the manufacturing process of heavy equipment and trailers.

steel round bars
steel merchants


We offer round bars from 1/4″ to 5 1/4″ in diameter.

View Round Bars

steel square bars


Square steel bars are available in sizes 1/4″ to 3” at 20-foot lengths.

View Square Bars

steel flats


We offer steel flat bars with widths ranging from 1” to 8”.

View Flat Bars

um plate steel

UM Plates

UM (or universal mill) plates are available in widths from 9” to 14”.

View UM Plates

steel rebar


We stock rebar in diameters ranging from #3 to #10 for construction and welding.

View Rebar

stack of different-sized steel angles


We have equal and unequal angles ranging from ¾” up to 8” in a variety of thicknesses. View Equal Angle or Unequal Angle Sizes.

More Info on Angles

Steel Merchant FAQs

Merchant bars are offered in a variety of shapes and types, all of which have different applications and uses. The shapes include Rounds, Squares, Flats, Angles, Universal Mill (UM) Plates, and Rebar.

Applications will range widely depending on the shape, but merchant bars are typically used for structural reinforcement purposes. This includes frames, brackets, fencing, floor and ceiling joists, railings, and more.

Merchants can have a wide range of prices based on shape, size, rendered services, market conditions, and other factors.

For more detailed pricing please contact your sales representative. Request a quote.

Additional Products

Service Steel Warehouse, which has been serving its customers since 1965, offers premium-quality carbon steel products throughout the U.S.

Structural Shapes

Beams and channels

Structural Tubing

Round piling, pipes, rectangles, and squares

Coils, Plates, and Grating

Coils, mill plates, floor plates, bar grating, and more


Steel sheet metal