Few manufacturers know dredge wear parts like we do.

Columbia Steel dredge buckets, ready to ship to Alaska

Columbia Steel is well known for its manganese steel dredge products. We’ve made hundreds of castings for bucket ladder dredges in overseas mine sites prior to 1930. During the thirties, about eighty percent of our sales revenues came from bucket ladder dredging business. Today, Columbia Steel has grown its capabilities and diversified its products, but its expertise in dredge bucket wear parts remains strong.

Hard-working alloys
Dredge buckets are cast from proprietary manganese steel that is heat treated and water quenched within tight standards. This delivers unequalled toughness and good resistance to abrasion, which improves as the steel work-hardens. Parts such as upper tumblers, trommel screen riding rings, deck idlers, and ladder roller parts are cast from readily weldable carbon steel or from high strength martensitic steels.

Columbia Steel produces a range of high strength steels which supply unique combinations of strength, toughness and abrasion resistance.

Columbia Steel dredge products:

  • Buckets
  • Replacement bucket lips
  • Upper drive tumbler assembly
  • Lower tumbler assembly
  • Lower tumbler wear ring
  • Screen drive roller
  • Screen riding ring assembly
  • Screen plate and accessories
  • Ladder rollers and components
  • Idlers and wear plates
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    Uncompromising quality
    Columbia Steel is one of the few remaining wear part producers to maintain a vertically integrated manufacturing operation in one location. Our approach enhances quality, efficiency and internal communication. We control each facet of design and production in-house at our Portland, Oregon 86-acre facility. Our capabilities include: application engineering, patternmaking, molding, coremaking, casting, heat treating, machining and quality assurance procedures. Columbia Steel guarantees every part for proper fit, performance and customer satisfaction.