Model NO.
ZBRF
Inspection
Internal and 3rd Parties
Sample Policy
Sample Free, Freight Collect
Production Update
Weekly Reports Will Be Provided
Application
Tunnel Building
Raw Material
Q235, Ningnan, 45#, 35CrMo, 42CrMo, 40cr
Inspection Reports
Chemical Composition, Physical Property and Sizes
Transport Package
Woven Bag and Wood Pallet
Specification
SGS
Trademark
ZBRF
Origin
China
Production Capacity
1800000 Tons
Certification:
Arema, Crcc, ASTM, Uic, Tb
Type:
Track Train
Product Grade:
4.6, 5.6, 8.8, 10.9
Usage:
Concrete Ring Connect for Tunnel
Size:
M20, M24 and Other Size Bolt
Surface Finish:
Plain, Black, Phosphate, Zinc, HDG
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
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