55mm PET preforms are used to make bottled water, and the weight of PET preforms ranges from 180g to 800g.55mm PET preforms 180g-580g are used to make disposable bottles, and 650g-800g are usually used to make reusable 5 gallon bottles.For 5 gallon bottles, if customers want to blow 5 gallon bottles with handles, we usually recommend customers to choose PET preforms over 730g, which can make the blown bottles have good results.In addition, for gallon bottles, we can also provide side handles in various colors and styles to meet customer needs.If customers have special size and weight PET preform requirements, we can also provide customized services according to customer needs. If you have this need, please contact us.