DDZ(T) type center latch bottleneck drill pipe elevators for Top Drive are convention bottleneck center latch elevators to handle pipes in oil and gas drilling operation.
DDZ type center latch bottleneck drill pipe elevators for Top Drive are made from high quality alloy steel with both advanced technology and heat treatment. The elevators are verified by strength test and NDT referred to ANSI/ASTM A487. The elevators can handle taper shoulder drill pipe from 3 1/2EU to 6 5/8IEU O.D.,  at the temperature minus 20℃. The rating loads are as follows: 2250kN, 3150kN, 4500kN and etc.
The sizes of contact surface between elevator and elevator link or between elevator and pipes conform to the specifications of Principal Contact Surface Size for Hoisting Equipment in SY/T 5288 and API Spec 8C.
Center latch bottleneck for Top Drive drill pipe elevators have been strictly Volumetric Radiographic Tested and Surface NDE and Verification tested and Ex-work tested, every technical parameters and properties of the equipment offered to customers are in accordance with the specifications of API Spec 8C and SY/T 5035 Elevator link, Elevator and Manual Tong.