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Trolley Booms

USTB has been producing block unloader components since 1985 and complete concrete block unloaders since 2001. USTB fabricates and produces aftermarket components and spare parts for all trolley booms and block unloaders manufactured in North America.

All parts, components and services offer a warranty, and are available through authorized dealers and end users. We also specialize in aftermarket crane and unloader parts.

USTB truck bodies are manufactured using heavy duty structural steel 
to meet our customers' unique specifications. Long sill and cross member
 size and spacing are individually tailored and bulkheads can be configured
 to each customerís application.

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