Aluminum Dump Bed May 9, 2019 Keith Stevens J & J Fabricating & Trailers, Inc. can handle your aluminum fabrication needs! Check out this 12’ aluminum dump bed. Locally built. This landscapers dump bed was fabricated in house. Water jet. The bed hinges were cut in house using our water jet. Consider J & J Fabricating & Trailers, Inc. for your aluminum fabrication needs.