PIGGING FOR OIL & GAS PIPELINES
The pipeline inspection gauges of SKO series (pigs) are designed to clean the internal surface of a pipeline.
SKO series pigs are very flexible in use, and they can be easily adapted to specific tasks. High abrasion resistance of polyurethane discs and sealing rings allows for cleaning in nearly any environment (oil, gas, oil products, and sea water).
The pig design provides high efficiency in specific pipeline sections such as sharply curved (R = 1.5Dy) bends, s-bends (back to back R = 1.5Dy), or various contaminants such as heavy deposits, paraffin, oxide scale, etc.
The pig design allows for moving through the straight tees (for 6 hours) without protective grids, double-faced valves with the groove width of up to 0.5 DH, pipeline restriction of to 60% DH (SKO-K), and up to 80% DH for other configurations.
APPLICATION
PIG TYPES
PIG COMPONENTS
POLYURETHANE FEATURES
| Parameter | UOM | Tested under | 75A (MDI) | 85A (MDI) | 85A (TDI) |
|---|---|---|---|---|---|
| Shore hardness | Shore А | DIN 53 505 | 74,0±1,4 | 85,0±1,2 | 81,2±1,4 |
| Wear | mm³ | DIN 53 516 | 37,8±4,4 | 38,1±5,5 | 54,9±5,3 |
| Tensile strength | N/mm² | DIN 53 504 | 43,0±3,5 | 46,4±3,4 | 46,0±3,7 |
| Ultimate elongation | % | DIN 53 504 | 407,4±27,5 | 414,6±29,2 | 546,8±29,7 |
| Crazing strength | N/mm | DIN 53 515 | 17,0 ±2,7 | 33,5 ±4,8 | 34,1±4,6 |
| Temperature range | °С | from -30 to +50°С |
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