Description
The Type DD center latch elevators with square shoulder are suitable for handling drill collars, casing, and tubing.The load ranges from 150 ton to 350 ton and the size ranges from 2-3/8″ to 5-1/2″ . The DD center latch elevator shall be designed and manufactured according to Spec 8A/8C . Specification for drilling and production hoisting equipment.
Model DDZ Center Latch Elevators are suitable for handling 18°taper shoulder drill pipe, drilling tools and etc. The Elevators are designed and manufactured according to Spec 8A-Specification for Drilling and Production Hoisting Equipment.
| Model | Size Range | Rated Torque | Remark |
| (in) | Short tons | ||
| 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 |
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