Evolution is inherent to the materials and equipment used in assembly, regardless of the product being made. For example, semi- and tank trailers increasingly feature composite-material components, along with those made of traditional steel or aluminum.
Wabash National Corp. (WNC) assembles its trailers with high-quality stainless steel and aluminum parts. The company also uses formed-metal parts for its dry freight, refrigerated, platform and bulk-tank trailers, and dry and refrigerated truck bodies.