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Seaport Steel

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Business Details



in Business


Regular Hours

General Info:
Founded in 1983, Seaport Steel is one of Seattle's largest independently owned structural steel and plate distributors. Its roots are established from Isaacson Steel in 1907. Isaacson was primarily a structural steel distributor. It conducted business in Seattle until it closed operations in 1983. At that time, Seaport Steel was formed by purchasing the inventory and equipment of Isaacson's Steel Service Division. In 1984, Seaport Steel bought the Steel Service Center. This plant specialized in steel plate and plate processing. By combining the two, Seaport is able to offer not only structural steel items but also cut and processed steel plate. Seaport Steel is a major supplier to construction, manufacturing and shipbuilding companies in the Northwest.
Extra Phones:

Phone: (206) 438-9775

Phone: (206) 395-2905

Phone: (206) 343-1366

Primary Phone: (206) 622-2081

Fax: (203) 343-1366

TollFree: (800) 233-3660

TollFree: (800) 835-4545

  • Bars
  • Pipes
  • Piping & Pipe Supplies
  • Plates
  • Processing
  • Sheets
  • Tubing
Payment method:
check, master card, visa, cash
Industrial District, Greater Duwamish
Steel Distributors & Warehouses, Metal-Wholesale & Manufacturers, Metal Specialties, Steel Processing, Steel Fabricators

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Seaport Steel


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Fast service and steel processing is our specialty. We focus on plate processing and cut to size structural with advanced machinery. Our experienced sales staff can service your steel requirements ranging from stock length inquiries to supplying complete cut to size projects.
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Seaport Steel

3660 E Marginal Way SSeattleWA 98134

(206) 343-0700

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Seaport Steel

3660 E Marginal Way SSeattleWA 98134

(206) 343-0700

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