New bolt tensioning tools have been developed for offshore uses.
These streamlined subsea tools incorporate a combined body and bridge, lifting eye bolt, 30-mm piston stroke, 1,500-bar operating pressure, twin hydraulic connections, a maximum piston stroke indicator, plus quick-release reaction nut.
Five tensioners are offered to cover a full bolt size spectrum from 1 to 3.5 in. All are fitted with the manufacturer’s composite material high-pressure seals. These clip into place and require no adjustment. The seals allow the tensioning piston to be retracted more easily after use — without leakage.
Boltight Ltd., Unit 2, Junction 10 Business Park,
Bentley Mill Way, Walsall, West Midlands WS2 0LE UK