In November 2009 Uneek Bending won the contract to build a large heating coil for a large offshore oil rig. The heating coil is an impressive piece of engineering. It consists of two twin start helical coils made from 150NB Schedule 40 pipe designed to sit precisely inside each other. Once assembled the coil measures over 3.6m in diameter and over 7m in length weighing some 22.7 tonnes. Once installed and filled with over 15000 litres of fluid this weight will increase to more than 37 tonnes.

In order to produce the coils with as much accuracy as possible each turn was checked with state-of-the-art laser measurement equipment. Each weld was also radiographed to check for defects. Have a look at the pictures below to get an idea of how large the coils really are and the Youtube video to see what it takes to move them!