1.Description 

BD Locking ring type tubing elevators series are made from high quality alloy steel, heat-treated and NDT.  And can handle tubing range from 1.9in to 4 1/2EU O.D. Rating loads of Tubing Elevators are 40t (360kN), 65t (585kN), 75t (675kN). All the technical data and property of the elevator conform to API Spec 8A, 8C and SY/T 5112.
The compositions and their meanings for specifications BD Elevators: 

2.Structural
BD Tubing Elevators are available with two types: single-latch and double-latch. Single-latch type one is equipped one latch assembly in the upper bore, while double-latch type one is equipped two latch assemblies both in the upper and lower bores. The body and ring-latch-lock are mainly to handle tubing.
Ring-latch-lock is fixed in eccentric notch of the body. With handle and M12 flat-ended screw, the state of ring-latch-lock can be range within 110° angle. Compressed spring is fixed in handle, when the handle is pull outwards approximately 8mm, the ring-latch-lock can be rotated, and when the ring-latch-lock is located "open" or "close", the handle can be fit in the position-fix hole.

3.Specifications for BD Locking ring type tubing elevators 
Chart for specifications of BD Locking ring type tubing elevators: