Manufacturers and worldwide suppliers of aluminum access covers since 1972, offering a full line of aluminum and stainless steel products for municipal and industrial water and wastewater treatment industries around the globe. Here we produce the latest and best equipment at the lowest possible cost to you and at the highest quality standard found anywhere. Our employees are motivated to use their skills to achieve the high standards set by the company. A trusted industry leader for over 47 years, the Halliday Products brand has become synonymous with quality metal products for the municipal and wastewater treatment industries.