Features & Benefits
Lightweight elements allow for simple assembly in confined spaces
“Bolt from inside” workplace safety feature
Small sections allow for minimal exposed excavation
Assembled corrugated steel pipe
Features & Benefits
Lightweight elements allow for simple assembly in confined spaces
“Bolt from inside” workplace safety feature
Small sections allow for minimal exposed excavation
Can be used with poling plates, full shield or half-shield tunnel methods
High seam strength bolted connections
The minimum allowable depth of cover is the largest of:
For roads H=B/8+0.2(m) H=B/6(m) and not less than 0.6（m）
For railways H=B/4 and not less than 0.6(m)
There is a possibility to reduce depth of cover provided that suitable checking calculations will be made.
| Flexible structure | Plate thickness | Kinds of standard corrosion protection | Required average min value(um） |
| plates | ≧6mm | Hot zinc galvanizing | 85 |
| ≧3mm do < 6mm | Hot zinc galvanizing | 70 | |
| ≧1.5mm do < 3mm | Hot zinc galvanizing | 55 | |
| Bolts and nuts | - | Hot zinc galvanizing | 45 |
Highway Construction 
Mine Projection 
Municipal Engineering 
Irrigation Engineering 
Railway Construction Projection 
Other Application 
Do you need a project solution?
With first-class products and services, and make greater contributions
