DDZ series elevators are center latch elevator with 18 degree taper shoulder, applied in handling the drilling pipe and drilling tools, etc. The load ranges from 100 tons to 750 tons. The size ranges are from 2.3/8″?to 6.5/8″.
| Model | Size(in) | Rated Capacity (short tons) | Remark |
| DDZ -100 | 2.3/8-5 | 100 | MG |
| DDZ -150 | 2.3/8-5.1/2 | 150 | RG |
| DDZ -250 | 2.3/8-5.1/2 | 250 | MGG |
| DDZ -350 | 3.1/2-5.7/8 | 350 | GG |
| DDZ -350TD | 3.1/2-5.7/8 | 350 | For Top Drive |
| DDZ -500 | 3.1/2-6.5/8 | 500 | HGG |
| DDZ -500TD | 3.1/2-6.5/8 | 500 | For Top Drive |
| DDZ -750 | 4-6.5/8 | 750 |
