Single Joint Elevator Single joint elevators are designed and manufactured according to API Spec 8A-Specification for Drilling and Production Hoisting Equipment. The elevators are hoisting tools for handling casing and etc in oil and gas field. Product Specifications For Single Joint Elevator Pipe Size Max. Load inch mm KN Tons 2 3/8 - 5 3/4 60.3 - 146.1 35 4 6 - 14 152.4 - 355.6 45 5 16 -36 406.4- 914.4 53 6