Railway bolts (also called fang bolts or track bolts) are used to fix steel rails and rai tie plates to sleepers, or to fix steel rail joints to connect railway tracks.
The diameter and length of railway bolts are determined according to the railway construction standards of each country. Most railway bolts are produced by hot forging and can be used in rail fastening systems in railway and tunnel construction in different countries.
Railway bolts can be classified into many types, such as BHON fish bolt, cup head oval neck fish bolt, heavy hex head frog bolts, anchor bolt, tunnel bolt, etc. You can order the fish bolts upon on your need.
Types of Railway bolts:
1.BHON fish bolt
Material: Q235, 35#, 45#, 40Cr, C45
Grade: 4.8, 8.8, 10.9
Size: 22×135, 24×135, 24×145, etc.
Surface: normal (oiled), oxide black, zinc, HDG
Type: BS standard, Indonesian R54 guide rail, AS1085.4-1999, Russian standard, AREMA standard, etc.
2. Cup head oval neck fish bolt
Size: M18, M20, M22, M24, L can be ordered on demand
Material: medium carbon steel
Meet the standard: AS 1085.4, 6&7
Surface treatment: black
3. Heavy hex head bolts
Size: Diameter 3/4" -1-3/8", the maximum length is 30"
Reference standard: ASTM A325
Surface treatment: black, galvanized
4. Anchor bolts
Size: M16 to M48, L = 100 to 500mm
Material: Q235, C35, C45, 35CrMo, 42CrMo
Reference standard: DIN529, ISO898-1
Surface treatment: oxide black, galvanized, hot-dip galvanized, dacromet, carburizing
Application: anchored in the concrete sleepers of the K-type fastening system
5. Tunnel bolts
Type: Drawings and samples provided by the customer
Surface: normal (oil) black. Zinc. HDG etc.
Type: square flange bolts with round threads, special curve bolts, spear bolts with special pitch, etc.
Advantages of railway bolts:
1. Many types, high strength
2. Easy to use and fast
3. Save time and money
Railway bolt application standards:
Each rail joint needs to be bolted with at least two bolts in each rail tightened to generate approximately 400 foot-pounds of torque, which approximately develops between 25,000, and 30, 000 pounds of tension force in the bolts.