4.6, 5.6, 8.8, 10.9
Concrete Ring Connect for Tunnel
M20, M24 and Other Size Bolt
Plain, Black, Phosphate, Zinc, HDG
Internal and 3rd Parties
Sample Free, Freight Collect
Weekly Reports Will Be Provided
Tunnel Building
Q235, 35#, 45#, 35CrMo, 42CrMo, 40cr
Chemical Composition, Physical Property and Sizes
Woven Bag and Wood Pallet