HDPE grades include antimicrobial , cutting board material, orthotics and prosthetics, marineboard, pipe grade , playground board, multi-color engravable, and woodgrain. HDPE is available in FDA mpliant and UV resistant formulations. Have HDPE cut and machined into fabricated . HDPE Sheets . Also known as pipe-grade HDPE, these sheets are about four times more impact resistant than standard HDPE and hold up outdoors, and in wet environments.