• Curve Spear Tunnel Bolt for Concrete Ring
  • Curve Spear Tunnel Bolt for Concrete Ring
  • Curve Spear Tunnel Bolt for Concrete Ring
  • Curve Spear Tunnel Bolt for Concrete Ring
  • Curve Spear Tunnel Bolt for Concrete Ring
  • Curve Spear Tunnel Bolt for Concrete Ring

Curve Spear Tunnel Bolt for Concrete Ring

Certification: Crcc
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
Samples:
US$ 0/Piece 1 Piece(Min.Order)
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Customization:

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Basic Info.

Model NO.
TB
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


Zhongbo Railway Fastening Company is a leading Chinese manufacturer of rail fastening and rail joint bar.

Zhongbo, as a specialized rail fastener manufacturer, provides a complete line of products, including rail fastening, anchor, rail joint, rail clip, rail screw, anchor bolt, rail clamp plate, rail fishplate, and fishplate bolt for connecting rail tracks.

We also make rail fastenings for crane rail and elevator guide rail, along with other related products. We manufacture according to GB/TB (Chinese national standards and railway standards), AREA, UIC, BS, DIN, ASTM, and AS standards.

Curve Spear Tunnel Bolt for Concrete Ring


Our products are mainly made through hot forging.

The threads of rail screw spikes are made by hot rolling with special threading machines.

We produce metric threads, BS, BSW, TR thread, or round threads.

Our high strength bolts come in different specifications of Class 4.8, 4.6, 5.6, 5.8, 6.8, 8.8, 10.9, and 12.9. A variety of non-standard fastening is also available. We can customize our products using customer drawings or samples as well.
 

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