Audited Supplier
ZBRF
Arema, Crcc, ASTM, Uic, Tb
Track Train
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
ZBRF
Woven Bag and Wood Pallet
SGS
China
Product Description
HDG High Tensile Tunnel Bolt
This type of bolts are to be used for connecting of concrete rings for tunnel construction. They are widely used for metro and railroad tunnel construction. We manufacture and supply in carbon steel, alloy steel, with grade 4.8, 5.8, 6.8, and 8.8. We can also supply accompany with plastci socket.
Now our products have been widely performing in Shenzhen Metro, Nanjing Metro, Shanghai Metro, Shijiazhuang Metro, Nanjing Metro, Guangzhou metro etc.
We also exported to Venuzula, Italy, Spain and Damark.
HDG High Tensile Tunnel Bolt
