Tunnel Bolt with Nut and Washer

• Customization: Available
• Certification: Crcc
• Type: Track Train
• Model NO.: ZBRF
• 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
• Inspection: Internal and 3rd Parties
• Sample Policy: Sample Free, Freight Collect
• Production Update: Weekly Reports Will Be Provided
• Application: Tunnel Building
• Raw Material: Q235, 35#, 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

Product Description

Tunnel Bolt with Nut and Washer

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.

Tunnel Bolt with Nut and Washer