Rahee Turnouts & Track Devices 170720

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Rahee Track Technologies specializes in designing and

manufacturing Turnout Systems, Rail Expansion Joints, complete

layouts and turnout components like crossing and switch

devices for railway tracks, for high-speed, heavy haul, urban and

commuting railways, for required rail profiles and gauges as per

international standards.

Rahee is one of the leading supplier of Turnouts and special Track

devices to the Indian Railways. Rahee’s Turnouts and Track devices

have been successfully serving the Indian Railways for last 30

years. Rail Expansion Joints developed and patented by Rahee

have been adopted for mass usage across the Indian Railway

network and is in use for almost 20 years.

Rahee has been exporting Turnouts and special Track devices to

various countries for 20 years and has an excellent export track

record with overseas customers. Rahee’s products are in use in

Bangladesh Railways, Malaysian Railways, Srilankan Railways and

several other railways around the world.

Through modern engineering, exceptional quality and latest

technology, Rahee guarantees efficient and competitive designs

for a wide range of railway system, along with a sustainable

reduction in the cost incurred for superstructure maintenance and

increased turnout availability.

private sector Rail End

Forging facility in India

First

Rail head hardening

plant in India

Machining capability

for rails upto

in length

First

18 m

OVERVIEW

TURNOUT SYSTEMS

The benefit of RTT’s Turnout Systems is

based on minimized life cycle costs by

~ high lifetime

~ low maintenance

~ high reliability

~ tailor made, specification-

confirming to designs

Primary considerations that Engineers at Rahee take

into account for designing are:

~ non-compensated horizontal

acceleration

~ cant 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, Dual Gauge turnout, Single

Cross-over, Scissors cross-over etc. can be supplied.

SWITCHES

CROSSINGS

Curved and Trap

Switches

Rahee produces Curved Switches

as per the client needs. Curved

switch tongue rails are curved

according to the curvature of

the turnout from the toe to heel

of the switch. Curved tongue

rail allows for smooth turning

of trains, and are used for the

specific curvature for which they

are designed.

Trap switch is used to protect

main railway lines from

unauthorized vehicles moving

onto them from sidings or

branch lines. A single tongue trap

consists of only one tongue rail

assembled with one stock rail and

one single stock rail.

Thick Web Switches

These Switches are made from

specific asymmetrical Tongue

Rail sections, forged at the end

to match standard rail sections.

The transition from one section

to the other lies mostly in the

clamped area at the end of the

switch. Thus welding is not

required in the flexible area.

The length of the forging can

be adjusted to the specific

requirement such as welding,

insulated fishplating or

emergency fishplating. In order

to reduce setting forces and to

influence the elastic strength

of the switch, the base of the

switch rail is milled in the

flexible area. 

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 machined 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 pearlite 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.

Rail End Forging

Facility

Rahee’s rail end forging facility is

one of the most modern facility

with capacities to forge over

8000 rails annually. Rahee has

the ability to forge rails in various

lengths and rail sections including

60E1A1, 54E1A1 and many more

as per the client requirement.

Head Hardening

Facility

Rahee’s continuous inductive

hardening process hardens rails

up to 360 BHN and increases rail

strength from 900 kg/mm 2 to

1080 kg/mm

Rahee’s state-of-the-art facilities design and manufacture switches as per client’s requirements.

Rahee designs and manufactures Crossings as per Railway requirement.

Cast Manganese Steel

Crossings (CMS)

Rahee can design and supply Turnouts with

Cast Manganese Steel Crossings (CMS). CMS

Crossing has longer life, higher strength and

offers more resistance to wear. They can be

supplied with conventional fish plated joints

and in weldable joint format, as per client

preference.

In Weldable CMS, the crossing is welded

with the adjacent rails to run the continuous

welded rail (CWR) through Turnouts.

Weldable CMS crossings as compared to the

conventional crossing, offers higher service

life and better riding qualities.

Rail Expansion Joints developed by

Rahee is a patented product and widely

popular in India as Improved Switch

Expansion Joint. After years of trials on

Indian track the product has successfully

been approved by the Indian Railways

for mass usage on its network.

Imp SEJ comprises a pair of non-bent

Rails (Stock Rail and Tongue Rail) mount-

ed on C.I Chairs with a gap (expansion

gap) between the two juxtaposed rail

RAIL EXPANSION

JOINTS

Salient features of Imp SEJ:

~ Excellent riding comfort

~ Low life-cycle cost

~ No undue stress on the

rails

~ Capable of being laid on

curved tracks

~ Head hardened wheel

transfer zone leading to

longer service life

~ Smooth wheel transfer,

increasing the life of

rolling stock

~ Capable of handling gaps

up to 200 mm and more,

with minor modifications

~ Safe due to presence of

check rails which guard

against excessive play of

worn out wheels

~ Continuous support

for wheel-set on rail;

no jump or change in

level of wheel-set while

negotiating gaps

ends. A third rail (gap avoiding rail) is

securely bolted to the Stock Rail by

bolts with high tensile strength to form

an extension of the Stock Rail. The

system also has check rails to reduce

wheel hunting, especially for worn

out wheels. They are bolted to the C.I

Chairs fixed symmetrically opposite to

the expansion gap. The check rails also

act as angle ties to keep the sleepers

in position. All wheel transfer areas are

head hardened to increase service life.

Glued insulated joints are used in tracks that meet certain requirements re-

garding stability, good tamping and sleeper quality. It consists of glass fibre

cloth insulated fishplates, a corresponding number of insulated high-ten-

sile 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 align-

ment. 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 condition and test in wet condition.

GLUED INSULATED

JOINTS

Advantages

~ Reduced wear in wheel

overrunning area

~ Reduced maintenance

costs

~ Reduced noise

~ Greater riding comfort

Types of sleepers

: Wood and concrete

Rail sections

: All common rail sections

Heat treatment of joints

: Hardened or preferably made from

head hardened rails

Bonding

: With appropriate bonding and

hardening agents

Manufacturing locations

: In the factory:

Technical characteristics:

Ideal conditions regarding cleanliness,

temperature and manufacturing procedure

because rail ends and surface of steel parts to

be bonded must be spotlessly clean.

: At site

As per client’s instructions.

design@innomedia.in

RAHEE INFRATECH LIMITED

Registered Office and Works :

Rail Track Fittings: 107, Lakhinarayan Talla Road,

Shalimar, Howrah-711103, West Bengal, India

Phone: +91-33-2668 3533/34 Fax: +91-33-2668 3737

Email: info@rahee.com

Kolkata Works :

Bridge Fabrication: NH-6, P.O. Argori, Jangalpur,

Howrah-711302, West Bengal, India

Rail Fastenings and Pads: Radhadasi Village-Panchpara,

Andul Road, Howrah-711317, West Bengal, India

RAHEE TRACK TECHNOLOGIES PVT. LTD.

Registered Office and Kolkata Works :

Turnouts and Special Track Devices: NH-6, P.O. Argori,

Jangalpur, Howrah 711302, West Bengal, India.

Phone: +91-98308 63111

Email: infortt@rahee.com

Hyderabad Works :

Turnouts and Special Track Devices:

173/B/1A, IDA Bollaram Village, Jinnaram (M),

Sangareddy Dist. 502325, Telengana, India

PANDROL RAHEE TECHNOLOGIES PVT. LTD.

Registered Office :

Kenwell Manor, 5th Floor, 10/D/2, Ho Chi Minh Sarani,

Kolkata-700071, West Bengal, India

Phone: +91-33-2283 4042

Email: info@pandrolrahee.com

Hyderabad Works :

Modern Rail Fastenings: 173/A3/B1, IDA Bollaram Village,

Jinnaram (M), Sangareddy Dist. 502325, Telengana, India

Phone: +91-83369 63718

www.rahee.com

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