We are leading fastener and component suppliers to manufacturers for the construction of Railways & general maintenance work on a daily basis. Indian railways have the largest rail network in the world so we have wide range of products as per requirements.
Track bolts and nuts are often used as the components on rail fastening systems. Anchor bolts are used to fasten rail tie plates and rail sleepers. T-bolts and nuts are mainly used to tighten rail clip (Or rail blade, rail clamp) to help tighten rails.
Roll-fast manufactures world class Bolts & nuts for use in Railways, these bolts are manufactured as per Indian, European and American standard in PLAIN, Black and hot dip galvanised finish, where ever applicable we can also provide these bolts in special coatings like HDG, PTFE, Geomet and Dacromet finish.
High strength bolt is a typical kind of rail fastener that is made of high tensile steel. Like other types of rail bolts, high strength bolt is used to connect the ends of rail together.
The functions of high strength bolt are preventing the track from movement and ensure the safety. As for the type, most of railroad bolts is high strength bolt, such as Diamond neck track bolt, Rail bolt NF F50-008, Fish bolt, Clip bolt HS26 & HS32, Special bolt, and so on.
We have wide range of material grade like –
|
S.No. |
Material Type |
Grade name |
|
1 |
Alloy Steel |
EN8, EN8Cr, EN18, EN19, 41cr, 41Cr4, 42CrMo4 |
|
2 |
Carbon Steel |
Low, Medium, High |
|
3 |
Mild Steel |
MS |
|
4 |
Stainless steel |
SS304, SS316, SS316L, SS310, SS310S, SS410, SS316L, SS316 S31 |
|
5 |
Duplex Steel |
S31500, S32304, S32404, S31803, S32205, S32520, S32550, S32750 |
|
6 |
Brass |
White brass, Alpha brass, Beta brass, Alpha- beta |
|
7 |
Aluminum |
1100, 3003, and 6061 |
Commonly type of bolts used in Railways
|
S.No. |
Specification |
Standerd |
Grade name |
Diameter |
|
1 |
Hex Bolts |
EN 14399-4 / DIN 6914 / ISO 4014 / ISO 4017 |
8.8, 10.9, B7, B8M |
M-16 to M-76 |
|
2 |
Stud Bolts |
ASTM A193 / ISO 898-1 |
8.8, 10.9, B7, L7 |
M-16 to M-76 |
|
3 |
Hex Nuts |
EN 14399-4 / DIN 6915 / ISO 4032 / ASME B18.2.2 |
8, 10, 2H, A4 |
M-16 to M-76 |
|
4 |
Washer |
EN 14399-5 / DIN 6916 / DIN 7089 / DIN 125 |
MS, HV100, HV300 |
M-16 to M-76 |
Bolts & nuts in 4.6, 8.8,10.9 & 12.9 grade are used extensively in railways all over the world, it is mainly used in rail coaches, engines, assemblies, and railways tracks. Our company manufactures all kind of bolts, rivets used in railways in carbon steel, alloy steel and stainless steel.
