Фотоматериалы
Inspection of the welded pipes with automatic ultrasonic equipment
The Nord Stream pipeline will be made up of high-quality steel pipes with walls ranging in thickness from 41 mm to 27 mm as the pressure drops along the route. Pipes are coated internally with anti-friction coating and externally with an anti-corrosive and weight coating. From inland storage, the pipes will be taken by pipe carrier to a large pipe-laying vessel, where they will be inspected for possible transport damage.
In a "double-joint welding station", two 12 m pipes will be welded together to a 24 m "double joint", with a welding pass from both inside and outside. Upon completion, the joint will be inspected by ultrasonic testing to identify possible welding defects. Good welds will be covered with an anti-corrosion coating and the double joint lowered to the seabed in a continuous line by pulling the pipe-laying vessel 24 m forward while the pipeline sections are kept under tension over the stinger.
Загрузки
| Тип файла | Разрешение | Размер файла | Размер изображения | Цветопередача | |
| JPG | 300 точек на дюйм | 6.4 Mб | 2240 px × 1680 px | Формат CMYK | Загрузить |
| JPG | 300 точек на дюйм | 2.1 Mб | 2240 px × 1680 px | Формат RGB | Загрузить |
| JPG | 72 точек на дюйм | 1.0 Mб | 1400 px × 1050 px | Формат RGB | Загрузить |
Photo may be used to accompany news-related reports about Nord Stream provided the source (Nord Stream AG) is mentioned.
