Shop for HDPE sheets. HDPE sheet is used for applications that require greater strength and stiffness than LDPE (low density polyethylene). It is easy to weld using thermoplastic welding equipment. Custom cuts and cut-to-size pieces. Have machined into fabricated parts. HDPE comes in many colors. Stocked materials typically ship in 2-5 business days. Can’t find what you need? Get a quote.