Rahee undertakes turnkey Bridge construction projects involving super structure as well as substructure work. Super structure works that Rahee undertakes include fabrication, assembly and launching/erection of steel, PSC, RCC and composite super structure of all types. Sub structure works undertaken by Rahee includes Pile, Well and Open foundation.

The company carries out construction of both plate & triangulated truss girder bridges including HT steel bridges for large spans. Rahee is approved by Indian railways for manufacture and supply of riveted and welded steel girders for railway bridges.

At Rahee we believe in speedy execution with quality deliverables. To facilitate the production at various project sites, Rahee has established well-equipped and modern fabrication facilities in its plants. Our facilities are manned by well experienced and qualified manpower, and supported by an in-house design and drawing team.

Rahee undertakes concrete, steel as well as composite bridge projects. Already the company has completed several bridge projects all across India involving challenges such as Incremental cantilever Launching of triangulated spans up to 92m.

Currently Rahee is executing contracts involving fabrication and erection/ launching of more than 50000 MT of steel structures at various sites spread across India. The company is constructing Super-structure of bridges as long as 5 Km involving spans upto 123m with individual span of 2100MT.

75000MT steel bridges completed

Erection 100m above ground level

10km of Bridges commissioned

Project name

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Project name

Rahee made its foray in the track works field in the year 1998. Today the group undertakes turnkey projects involving:

- Flash butt welding of rails on and off track
- Ballastless Track works for Metros and Railways
- Ballasted Track works for Metro Construction of Railway Sidings & Yards
- New Lines & doubling of tracks
- Gauge conversion of tracks
- Improvement of track structures

Permanent way is the foundation for all railways. Rahee undertakes supply and installation of tracks for all types of railway infrastructure projects. We work with customers requiring ballasted and ballastless track construction, track renewals, gauge conversion, new projects for main line, mass transit, metro and light rail projects.Rahee group is one of the fastest growing ballastless track contractors in the country.

Rahee provides services for planning, building and improving railway sidings. The group has the capability to undertake turnkey railway sidings and yard development contracts. Our team of experts and associates can provide a one stop solution for design, supply & installation of tracks for sidings and main line. Rahee also undertakes Mobile Flash Butt Welding and other track works projects. The Company’s teams of well-qualified engineers use some of the best welding equipment to deliver high quality welds to customers. The group has successfully executed one of the highest number of welds in the country.

40km BLT Commissioned in 16 months

Executing 140 km+ BLT

Executed 8 different track forms in a single project

Rahee is a leading player in the field of Rail fastening systems. It has been manufacturing track products for over 60 years. The Group's innovative outlook has propelled the company from strength to strength.Rahee in its pursuit to deliver the best solutions to its customers has also forged a Joint Venture with Pandrol Ltd of UK, the world leaders in elastic rail fastenings. The company markets and supplies one of the most advanced elastic fastening systems in the world.

Rahee owns patent for Zero Restraint Fastening System (ZRF), a unique & innovative solution designed by the company to overcome the shortcomings of the present fastening system used by railways on bridges. Rahee’s design of ZRF System has been highly appreciated and approved by the Ministry of Railways for full fledged adoption in India.

The Company’s customers have the knowledge of Rahee’s engineering personnel at their disposal for development of new systems or the design of customer- specific products. Excellent staff potential together with outstanding technical knowledge ensures that customized solutions are put into practice within a short time.

Fish Plates

We manufacture and supply fish plates to suit UIC, BS and other standard rail profiles. We have already developed a wide range of rolled fish plate profiles for rail sections such as: UIC 60, UIC 54, U33, BS 80A, BS 90A, IRS 52 KG and IRS 90 Lbs

Steel Clips

Steel Clips are designed to hold the foot of the rail with the Base Plate or Sleepers and are fastened to the rail and Base Plates with standard or special shaped Bolts & Nuts.

Track Bolts & Nuts

Rahee manufactures and supplies bolts and nuts for Railway use. The products can be manufactured as per the client specification in compliance with Indian or International standard specifications.
We use modern continuous atmosphere controlled heat treatment facilities to produce high quality heat-treated threaded high-tensile fasteners. Heat Treated Fastenings are manufactured to Indian standard specification or as per customer's requirement. The head is hot forged and the threads are either cut or rolled as per the client’s requirement.

Spikes

Rahee supplies Spikes as per the customer's drawings and specifications in galvanized as well as in non-galvanized condition. We manufacture hot forged and hot thread rolled Screw Spikes / Drive Spikes/ Dog Spikes as per customer’s requirements

Zero Restrain Fastening system for Bridges

ZRF is a unique innovative solution designed by Rahee to overcome the shortcomings of the present fastening system used by railways on bridges. Rahee’s design of ZRF assembly on Steel Channel Sleeper or H-beams meets the requirement of IRPWM (i.e. Rail free fastening). The Rahee design uses Elastic Rail Clip Mk-III, which is same as used on standard Track on the approaches at the Bridges in Indian Railways.
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Salient Features :
- Provides no restraint on longitudinal movement of Rail
- Provides rigid lateral support to Rail for stability, correct gauge and alignment
- Provides vertical stability to Rail by use of Elastic Fastening
- Provides higher degree of resistance to Rail overturning
- Easy to install and inspect in installed condition.Fit for re-application
- No loose component is involved.Use of Elastic Rail Clip Mk-III, which is the standard Elastic Clip for normal Track application on Indian Railways
- Facility for interchangeability of Rail between IRS 52 and UIC 60

Elastic Rail Clips

Rahee manufactures elastic rail clips to customer requirement. We are well equipped with design facilities and are capable of supplying elastic clips as per the rail section and toe load requirement of the customers. All arrangements for testing are available at our works. Finite element analysis to design clips is adopted. Special coatings like electroplating or tip galvanizing and/or powder coating can be applied on the clips depending upon the customer’s request.

Rahee manufactures steel sleepers for various track applications including :

- Steel Sleepers for Standard Track
- Steel Sleepers for Turnouts
- Steel Sleepers for Bridges

Steel railroad sleepers are formed from pressed steel and are trough-shaped in section. The ends of the railroad sleeper are shaped to form a "spade" which increases the lateral resistance of the railroad sleeper. Steel railroad sleepers are lighter in weight than concrete and able to stack in compact bundles unlike timber. Steel railroad sleepers can be installed onto the existing ballast, unlike concrete railroad sleepers which require a full depth of new ballast. Steel sleepers are 100% recyclable and require up to 60% less ballast than concrete ties and up to 45% less than wood ties.

Modern steel railroad sleepers handle heavy loads, have a proven record of performance in signalized track, and handle adverse track conditions. Of high importance to railroad companies is the fact that steel railroad sleepers are more economical to install in new construction. Steel sleepers are utilized in nearly all sectors of the worldwide railroad systems including heavy-haul, class 1’s, regional, short lines, mining, electrified passenger lines (OHLE) and all manner of industries. These sleepers can be supplied with or without cant, with holes or with welded plates.

Rahee can offer wide range of pad plates and sleeper plates to suit the sleepers together with fasteners. Steel sleepers can be made in conventional and special profiles to suit all types of rail gauges including Broad Gauge, Standard Gauge, Metre Gauge, and Narrow Gauge. Rahee can also manufacture combination gauge steel sleepers to suit two different types of gauges on the same line.

Steel sleepers are also widely used in the railway tracks running over bridges where a resilient ballast bed cannot be created. Steel Sleepers for Bridges are manufactured using either Steel Channels or H-beam steel section. The sleepers are usually supplied galvanized or metallized to deliver effective service life on bridges. Steel Sleeper over bridges are a much more robust and effective solution as compared to wooden sleepers.

Steel Channel Sleeper

Steel channel sleepers are designed for use in the railway tracks running over bridges where a resilient ballast bed cannot be used. Steel channel sleepers are fabricated from steel channel sections, wherein two channels are welded together to obtain the required strength. Both running and guard rails are accommodated on the channel sleeper. The running rails are fixed to the canted bearing plate using clip and bolt rail fastening system. However the guard rails are bolted directly on the sleepers. Rubber pads are also provided under each rail and sleeper to absorb the shocks and dampen the vibrations. Steel channel sleeper with all steel fittings are hot dip galvanized to enhance the service life of the product.

H-beam Steel Sleeper

H-beam sleepers are exclusively designed to handle the dynamic loads of trains on non-ballasted open deck steel girder bridges. The H-beam sleeper is made of single rolled H-beam section having adequate bearing area, robust structure and accurate dimensions which are more suitable for the tracks running over bridges.Canted bearing plates are riveted on the H-beam sleeper to hold the running rails using rail elastic fastening system. It is possible to have either zero load or full load fastening system on H-Beam Sleepers as per client requirement. Use of Zero load fastening system (ZRF) on H-beam sleepers ensures that rail creep or thermal expansion forces are not transmitted to the girders. In ZRF system elastic fastenings are used and no extra maintenance tools are involved. It is also possible to replace the rail-free liner by toe-loadable liner wherever required. H-beam sleepers facilitate provision of long welded tracks on bridges.

Steel sleepers are used for standard railway tracks and turnouts subjected to medium or heavy axle loads. They are lightweight and dimension-ally more accurate than wooden or concrete ones. Their multiple advantages, including lower cost compared to wooden sleepers, make them an effective technical solution for modern rail networks. Rahee offers a wide range of steel sleeper designs, including ones for heavier axle loads and higher speeds.

Production :

Rahee’s Steel Sleepers are manufactured in accordance to specific technical requirements of customers. The manufacturing process, employing latest CAD / CAM systems to design and optimise production, is optimally structured to reduce wear and lower forces, maintenance and life-cycle costs.

The sleepers are cut to length; the ends pressed in a forging die. Depending upon the type of fastenings specified by the client, holes are punched or base plates / shoulders are welded onto the steel sleeper.

Technical characteristics

Rail fastening for low track load

Directly by means of clips and t-bolts

Rail fastening for higher loads

Base plate welded to sleeper tops and used with elastic rail clip or hook in shoulders with fast clip / elastic rail clips

Electric insulation

On request by means of bolted plastic pads or insulators with rubber pads

The principle benefits of RTT’s steel sleepers are :

- Improved stability
- Fully recyclable
- Reduced maintenance
- Uniform and consistent quality
- Can be supplied in small batches
- Time and cost savings at installation
- Simple site preparation and installation
- Minimal “Imprest” stock requirement
- Convenient during accident and flood restorations
- High resistance to lateral displacement in ballast
- Ideal solution for sharp curves and steep gradients
- Environmental benefits due to reduced ballast requirement
- Lightweight design enabling easy handling
- Equally amenable to both manual and machine tamping
- Can be laid on inferior ballast such as sand or gravel albeit with appropriate speed restrictions

Rahee Track Technologies Pvt. Ltd. (RTT) designs and manufactures steel sleepers, complete layouts, turnouts and turnout components such as crossings and switch devices for railway tracks, including high-speed, heavy haul, urban and commuting railways, in all available rail profiles and required gauges according to international standards.

The benefit of RTT’s Turnout Systems is based on minimized life cycle costs by :
- High lifetime
- Low maintenance
- High reliability
- Tailor made, specification-conformal designs

Primary considerations that engineers at Rahee take into account for designing are :
- Non-compensated horizontal acceleration
- Can't deficiency variation
- Jerk
- Lateral load
- Axle load
- Speed

Points & Crossings suitable for various layouts including Diamond Crossings with or without single or double slips, symmetrical switches, turnouts taking off from curve, double turnout, single cross-over, scissors cross-over etc. can be supplied.Through modern engineering, exceptional quality and latest technology, we guarantee efficient and competitive designs for a wide range of railway systems; along with a sustainable reduction in the cost incurred by superstructure maintenance and considerably increased turnout availability.

CNC Plano Milling machines

We believe in delivering perfection at most optimum speed to our customers. In order to support our beliefs RTT has heavily invested in modernizing its workshops with latest CNC Plano Milling machines ranging from 8 meter to 13 meter in length. Machines are equipped with controls from Siemens and Mitsubishi, that can be programmed as through CAD/CAM to machine our products for the clients.

Head Hardening Facility

Rahee’s continuous inductive hardening process hardens rails up to 350 BHN and increases rail strength from 900 kg/mm2 to a minimum of 1080 kg/mm2. . It also induces high wear resistance to the rails while improving their elongation and toughness. RTT uses its in house head hardening process extensively while manufacturing turnouts. Head Hardened Rails provide the advantage of Increased rail life, Low life cycle cost and Low maintenance cost

Thick Web End Forging Facility

RTT is the first private sector company in India for forging its own Thick Web Rails at its units located in West Bengal & Telangana. RTT’s forging facility has the capability to forge over 16000 nos of rails per annum duly equipped with Induction Heating and automated die handling system.

Testing Facilities

RTT is equipped with its own physical and chemical test labs in the plant. The testing facilities include Spectrometer, Digital Microscope, UTM machines upto 1000 nm, Brinnel/Rockwell Hardness Testers, Charpy testing machines, Mobile hardness tester, Surface roughness testers, Infrared Thermometers and other modern equipments test the desired quality parameters as per customer requirement.

Heat Treated Welded Crossing (HTW)

Rahee’s HTW crossing is a monolithic structure, where the Vee is formed from two separate pieces of rails, with a steel plate sandwiched in between.The plate is Electro-slag welded and machines to form a solid nose. The weld metal hardness, at the top of the rail head and in the weld cross section, ranges from 330 to 360 BHN.The Wing Rails are head hardened through induction hardening method with subsequently controlled cooling, to obtain fine pearlitic grain structure. The Wing Rails and the Vee are bolted together by high tensile bolts, to form a complete HTW crossing. These crossings can withstand axle loads as high as 25 tones under varying traffic conditions and can be welded to the adjoining rails.HTW crossing can be designed and manufactured as per the client’s specific requirements. Rahee has supplied various types of HTW crossings such as Acute, Obtuse, Diamond, Curved, Extended Nose Type, and Crossings with clothoidal entry.
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Advantages :

- Cost effective solution
- Longer life cycle
- Easy to weld repair in situ
- Low maintenance cost
- Fit for high axle load and high speed
- Quicker delivery

Swing Nose Crossing

Rahee can manufacture and supply Swing Nose Crossing (SNC).
SNC helps you meet the new age requirements for high speed with high comfort level, which demands continuous movement of rolling stock over gap less tracks and turnouts. Here, the movable nose of the crossing alternately couples with either side of the track, to form continuous rolling tracks. This ensures smooth passage of wheels and reduces jerks, enhancing the life cycles of both wheel and crossing.The crossings have flexibly moving points and splice rails. Longitudinal compensation during setting is achieved through a special bolting between the points, and splice rails which permit relative displacement. As a result, there is no need for an expansion joint in the closure rail. The use of standard rail sections ensures a wide selection of material. Designs are available with or without a continuous base plate.
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Advantages :

- Continuous wheel overrunning area (no running edges and head surface interruptions), therefore particularly suitable for high-speed and heavy haul traffic, as well as for mixed operations (different vehicles and wheel set types)
- No check rails required – thus ideal for high-speed traffic
- Reduces airborne and structure-borne noise
- Highest possible service life due to absence of impacts in the wheel transition area. Thus ideal for heavy haul, high speed operations
- Can be thermit-welded into the track
- With special anti-creep equipment for transmission of longitudinal forces in the continuously welded track

Fabricated Crossings

Fabricated or Built up (Bolted) crossings are made by machining of rolled sections of rails and these suit the resilient condition of the railway track. These Crossings can be repaired by surface welding in-situ to enhance their service life. These can be single or double (Diamond) or Multiple (Scissor) crossings.

Glued insulated joints consists of glass fiber cloth insulated fish plates, a corresponding number of insulated high-tensile bolts and end post made of insulating material.

They can be assembled in-situ or at works. It meets International standards for insulation resistance, pull load, deflection test, wet insulation test etc. Every fabricated/ assembled joint is checked for vertical and lateral alignment. Joints are subjected to insulation resistance test in dry condition. Pull out test is also carried out at works as a prototype test. The prototype test also includes insulation test in dry conditions and test in wet conditions.

Advantages :

- Reduced wear in wheel overrunning area
- Reduced maintenance costs
- Reduced noise
- Greater riding comfort

Technical characteristics

Rahee with its vision to provide one stop solution from components to commissioning of tracks, set its footprints in the Mobile Flash Butt Welding business in the year 2005. Since then there has been no looking back and the company today possesses six state of the art Mobile Flash Butt Welding Plants, serving customers’ requirements all over India.

Its team of well-qualified engineers use some of the best welding equipment to deliver high quality welds to the customers. Our machines are approved and capable of welding 52 kg, 60 kg 90 and 110 UTS Rails along with both 880 and 1080 (Head Hardened) Grade rails which sums up all the types of rails being used in the country. Our available resources can weld over 1500 m of rails per day. The company has successfully completed over 3,50,000 welds which is one of the highest in the country.

List of Mobile flash butt welding machines possessed by the company:

K 900	An E.O.Patton rail-road machine
K 920	An E.O.Patton rail-road machine
K 922HK	An E.O.Patton rail-road machine
K 355	A Plasser & Theurer rail-road machine
H 1000	A Holland co, USA rail-road machine

Welding of HH 1080 Gr. Rails

3,50,000+ welds executed

220+ kms track welded

Rahee has the capacity to fabricate 800 Tons of Structural Steelper month at its Howrah plants, where single pieces of up-to 15 MT can be fabricated. Facilities with covered area of over 15,000 sq.m and open fabrication yards of 30,000sq.m, with EOT cranes, are available for fabrication.

Rahee has modern fabrication facilities housing CNC Profile Cutting Machines, CNC drilling machine, Welding Transformers/ Rectifiers TIG, MIG, CO2, Semi-Automatic Submerged ARC Welding machines, Electroslag Welding Machine, continuous Beam straightening machine etc.

With the state of the art facilities for fabrication and machining, Rahee is one of the leading fabricators of steel bridges in India. As part of its manufacturing competence, Rahee can carry out compete full scale layouts, control/trial assemblies and testing of various structures and components in its workshops,

Four shot-blasting rooms are available for perfect surface preparation and anti-corrosive treatment of fabricated components, including metallising with aluminium spray.

Rahee, with its in-house physical and chemical testing facilities and a dedicated Quality Control team, ensures complete customer satisfaction. Testing facilities available include Ultrasonic Testing Machine, Radiography Equipment, Magnetic Particle Testing Machine, Ultrasonic Surface Finish Tester, Die-Penetrant Testing Facility, Digital Hardness Tester, RAM Testing Facility (1:4), Digital Height Gauge, either in-house.

Being an ISO 9001 accredited company, stringent quality systems are an integral part of Rahee’s manufacturing processes. Both, in-process and final inspections are carried out by a team of trained quality engineers. The company management practices and trusts Total Quality Management.

Facilities available include :

- Plate Bending Machine
- CNC Profile Cutting Machine
- CNC Drilling machine
- SAW Machine
- TIG, MIG, CO2 Welding Machines
- H/I Beam Straightening Line
- Hydraulic Presses up-to 700 Ton Capacity
- Grit/Sand Blasting
- Spray Metalizing Facility
- Painting Booth/Covered Painting Area

Third rail systems are a means of providing electric traction power to railway trains, and they use an additional rail (called a “conductor rail”) for the purpose. On most systems, the conductor rail is placed on the sleeper ends outside the running rails, but in some cases a central conductor rail is used. The conductor rail is supported on ceramic insulators or insulated brackets, typically at intervals of 10 feet (3 meters) or so.

Rahee manufactures and supplies these galvanized steel brackets, used as a component for a Support Insulator Assembly for an electrification system dedicated to Metro application. The bracket is an interface between the guide way and the insulator. Its function is to hold and locate a conductor rails with reference to a running rail. The brackets are fabricated as per client specifications and drawings specific to each project. Usually the brackets are fabricated using hollow square pipes and thereafter Galvanized finished for dispatch.

Rahee manufactures various types of brackets :

- Line Bracket Support for Viaduct
- Ramp Bracket Support for Viaduct
- Line Bracket Support for Turnouts
- Ramp Bracket Support for Turnouts

businesses

Bridges

bridges

track works

track works

fastenings and sleepers

fastenings and sleepers

turnouts

turnouts

flash butt welding

flash butt welding

steel fabrication

Steel fabrication

75000MT steel bridges completed

Erection 100m above ground level

10km of Bridges commissioned

Project name

Project name

Project name

40km BLT Commissioned in 16 months

Executing 140 km+ BLT

Executed 8 different track forms in a single project

Welding of HH 1080 Gr. Rails

3,50,000+ welds executed

220+ kms track welded

Copyright © 2019 . All Rights Reserved

businesses

Bridges

bridges

track works

track works

fastenings and sleepers

fastenings and sleepers

turnouts

turnouts

flash butt welding

flash butt welding

steel fabrication

Steel fabrication

75000MT steel bridges completed

Erection 100m above ground level

10km of Bridges commissioned

Project name

Project name

Project name

40km BLT Commissioned in 16 months

Executing 140 km+ BLT

Executed 8 different track forms in a single project

Track Materials

Elastic Fastenings

Pandrol Fastenings

Rail Pads

Steel Sleeper

Steel Sleepers for Bridges

Steel Sleepers for Standard Track

Turnout Facilities

Switches

Crossings

Rail Expansion Joints

Spring Setting Devices

Glued insulated joints

Welding of HH 1080 Gr. Rails

3,50,000+ welds executed

220+ kms track welded

Copyright © 2019 . All Rights Reserved