Tunnel Segment Bolts
|
Category
|
Details
|
|---|---|
|
Standard
|
As per the drawing
|
|
Raw Material
|
Q235, 45#
|
|
Strength Level
|
5.6, 6.8, 8.8
|
|
Surface Treatment
|
sherardizing, decrement, hot-dip galvanizing
|
