Sany 380 rotary drilling rig parameters: maximum drilling diameter (mm): 2.800, maximum pulling force (kN): 350, maximum drilling depth (mm): 110/72. Parameters are an option that can be used in many mechanical settings or maintenance. They are literally data for reference, but sometimes they are not all data. For a specific application, it can be an assigned constant value. When referring to it generally, the parameter can be a variable used to control other quantities that change as it changes. Simply put, parameters are for our reference.