Straight joints can be used in straight-through piping systems where oil or gas is the medium, as well as in systems within petroleum refining, chemical, light industry, textile, defense, metallurgy, aviation, and shipbuilding industries. This dataset includes major raw materials, auxiliary materials, energy inputs, and waste outputs from the production process; however, infrastructure such as production equipment and factory construction are excluded from the system boundary. The life cycle inventory is compiled from data sourced from multiple references. The manufacturing process of straight joints includes injection molding, plating, stamping, assembly, and inspection processes.