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sao tome and principe Subway construction Tunnel bolt segment bolt
Thread: Half/Full
Size:M6-M20
Surface: Plain,Black,YZP,ZP,HDG
Standard: GB,ANSI,BSW or Customized
Category:
Product Description
Product details
Usually tunnel segment bolts are divided into 6 types, namely: hexagonal head arc segment bolts, non-standard segment bolts, double-ended straight segment bolts, double-ended arc segment bolts, hexagonal flange face circle Arc thread segment bolts, hexagon head arc thread segment bolts. In addition, the segment connecting bolts can also be classified according to the stress. There are usually 3 grades, namely: 5.8 machine (material is Q235), 6.8 (material is 45#), 8.8 (material is 40Cr) ), in which the surface treatment is galvanized.
The tunnel segment bolts can assemble several segments together. Some of the segments have a certain arc, and some are straight. The connection and fastening between segments depends on the action of segment connection bolts. The application range of segment connection bolts It is widely used in building segment connection, shallow buried longitudinal segment bolt, Subway Line shield, Subway Line segment connection, tunnel segment connection and other projects.
Square flange bolts with round thread for tunnel construction
Diameter:25mm
Length from 400mm to 500mm
Tension strength is more than 700MPA
Surface:Yellow Zinc or according to clients' requirement
Packing:600pcs in wooden case
Grade 4.8 5.8 6.8 8.8 10.9
Thread: Half/Full
Size:M6-M20
Surface: Plain,Black,YZP,ZP,HDG
Standard: GB,ANSI,BSW or Customized