RRH series of double acting hollow hydraulic jack has all the function of general hydraulic jack, and double acting hollow hydraulic jack also has the function of pulling. It also is used for tension PC strands, steel wire, axle and drill rod. We are double acting hollow hydraulic jack supplier and manufacturer, if you want to get hydraulic jack price list and details, you can contact us directly, email address: info@gaodetec.com

High pressure alloy cylinder is very durable, especially in the larger project, it is easily to be operated and control. It can be used for lifting heavy machine, bridge project, hydraulic engineering, harbour construction and other equipment.
According requirements we can customize double acting hydraulic cylinder for our customers.
1. The double acting hollow hydraulic jack can be used widely in post-tensioning operation for prestressed concrete bridges, foundation anchorage, immense constructions, ground anchorage, marine constructions, etc. projects.
2. Hollow hydraulic jack for post tension is mainly used in to tensioning the PC strands/steel wire of the bridge construction.
3. With double acting hydraulic cylinder together use the complete set: anchorage, electric oil pump, mixer, grouting pump machine, push machine for PC strand/ steel wire.
4. General tonnage of the hollow hydraulic jacks is based on the anchor's holes to match use.

Features of hydraulic jack:
1. Double-acting cylinder version for fast retraction. 
2. Double acting hollow hydraulic jack design can highly improve the convenience.
3. Baked enamel finish for increasing corrosion resistance. 
4. Hollow hydraulic jack is used for tension PC strands, steel wire, axle and drill rod. 
5. Built-in safe valve can protect hydraulic jack when over loading.
6. Plunger wiper reduces contamination, extending cylinder life.
7. High pressure hydraulic jack is very durable in large projects. 
8. Double acting hollow hydraulic jack cylinder can bear Max loading when Max stroke.
9. Interchangeable, hardened grooved saddles are standard. 
10. High quality seal ring makes the hollow hydraulic cylinder’s life more long, no oil leakage. 
11. Our hydraulic jack is easily operated and control.
12. Gaodetec can design hydraulic jack in accordance with demands of customers.
13. Double acting hydraulic cylinder allows for both pull and push forces.
14. Hydraulic jack is safety valve in retract side of cylinder helps to prevent damage over-pressurization.