GF Piping System Order Design for New Custom Plastic Water Tank United Plastic Fabricating has once again completed another custom design job! This order comes from GF Piping Sytems, a longtime industry leader in automatic pH monitoring and neutralization tanks. With their needs for a variety of unique water tanks, United Plastic was the obvious choice. The custom plastic water tank designed for GF Piping will have the same rust-resilience and strength of all our products. Additionally, the high quality manufacturing we use in all of our UPF products remains the same. With tank options ranging from 5 to 1,200…Recent Deliveries and tagged GF piping, UPF, water tank on .