For pipeline optical cable, cable, plastic pipe laying and underground pipeline predischarge wire rope.Using FRP synthetic fiber glass manufacturing, high strength, large elastic.
| Model | Crossing length | Glass steel pipe diameter | Weight |
| BCD-1 | 120m | ф12mm | 38kg |
| BCD-2 | 150m | ф12mm | 45kg |
| BCD-3 | 180m | ф12mm | 65kg |
| BCD-4 | 150m | ф14mm | 55kg |
| BCD-5 | 180m | ф14mm | 60kg |
| BCD-6 | 200m | ф14mm | 85kg |
| BCD-7 | 300m | ф16mm | 90kg |
