dorman long technology

We are designers and manufacturers of heavy lifting equipment, hydraulic jacking systems, mechanised structures and steel bridges. We have a range of standard products which are listed on this page, and we also design and supply one-off systems to suit particular project requirements. To support the use of our products we have a large engineering office able to provide construction engineering and permanent works design and we also have experienced site technicians to train and certify client's staff in the operation and maintenance of our systems. All our products are designed, manufactured and tested in accordance with our accredited ISO 9001 quality management system and come with a comprehensive operation and maintenance manual and dedicated after sales support.

Hydraulic jacks, power packs and control systems:
>Strand jacks. from 15 tonnes to 1022 tonnes capacity per jack.
>Climbing jacks. from 100 tonnes to 800 tonnes capacity per jack
>Gripper jacks. from 50 tonnes to 500 tonnes capacity per jack
>Chain jacks. from 50 tonne to 600 tonnes capacity per jack, for both chain pulling and chain releasing.
>Hydraulic rams. solid and telescopic rams. all sizes up to 5,000 tonnes per jack.
>Hydraulic power packs. Electric and diesel powered units from 2 kW to 500 kW
>Heavy lifting/skidding control systems. Electronic automated control of all types of lifting and skidding systems

Gantries and complete jacking/skidding systems:
>Bridge deck erection gantries. For all types of prefabricated steel or pre-cast concrete bridge decks.
>Hydraulic gantries. from 50 tonnes to 300 tonnes capacity per unit, commonly used for handling heavy machinery
>Skidding systems. For lifting and skidding of bridges and heavy offshore structures.
>Jacking tower systems. Used mainly for erection of heavy petrochemical vessels and large roof structures.
>Synchronous lifting systems. Multi-point jacking systems with fully automated monitoring and control for synchronous lifting

Other products:
>CAN-bus hydraulic power control systems. For automated sensing and synchronised control of hydraulic power systems.
>Wheeled bogie units and drive systems. Wheeled bogies units and chain drive systems for cranes and gantries.
>Self-propelled modular transporters / trailers (SPMT) and straddle carriers. For handling and transport of large heavy items
>Modular bridges. Prefabricated steel bridges for permanent and temporary applications.
>Viscous dampers. From 60 to 3000 kN max damping force.

Services :
>Engineering consultancy service design of temporary and permanent works and construction engineering..
>Site support Technicians Experienced site technicians to train and certify client's staff
>Rental equipment . Strand jacks, climbing jacks, power packs, control systems, skidding systems, pot jacks.