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

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.

Rahee Rail Expansion Joint design

is based on proven design of thick-

web switches which allows reciprocal

movement of both tongue rail and stock

rail up to 100 mm at each end along the

length.

Switch type expansion joint design is

proposed to eliminate the gap which

causes severe impact during the

movement of rolling stock. The basic

concept of this design is to provide a

curved guided path to uncut stock rail

by precise machining of tongue rail.

RAIL EXPANSION

JOINTS

Salient features of design:

~ Gapless & Boltless

~ No use of brackets

~ No machining of Stock

Rail

~ Use of thick web tongue

end forged rail

~ Use of standard

fastenings

In this design both thick web tongue

rails and stock rails are elastic fastened

through the entire length using

Canted chair.

Use of inner fastening for holding

stock rail on both sides minimizes the

possibility of dynamic gauge widening.

The tip of tongue rail is housed in the

recess under the head of stock rail

which is formed by machining of the

stock rail head. This reduces impact at

entry and wear at switch tip.

Glued insulated joints are used in tracks that meet certain requirements

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

fibre cloth insulated fishplates, 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

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.

~ Ease of installation

~ Lower noise and

maintenance

~ Excellent design for

Heavy Haul and other

applications

~ Low product life cycle

cost

RAHEE INFRATECH LIMITED

Registered Office :

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

Kolkata - 700 071, West Bengal, India

Phone : +91-33-2283 4042 Phone : +91-33-2668 3533/34

Fax: +91-33-2668 3737 Email: info@rahee.com

Branch Office :

408, Surya Kiran Building, 19 Kasturba Gandhi Marg

New Delhi - 110001, India

Works Unit-I

107, Lakhinarayan Talla Road, Shalimar,

Howrah - 711103, West Bengal, India

Works Unit-II & Unit-III

Village - Panchpara, P.O -Radhadsai, P.S- Sankarail,

Howrah - 711317, West Bengal, India

Works Unit-IV

N.H.6, P.O. Argori, Jangalpur Howrah - 711302,

West Bengal, India

Works Unit-V

NH-6, Opposite Ambuja Cement, Near Dhulagarh Truck Terminal,

Dhulagarh, Howrah, West Bengal, 711302

Works Unit-VI

PS – Dhenkanal Sadar, Vill – Padmanavpur PO – Saptasajya,

Dhenkanal -759013, Odisha, India

RAHEE TRACK TECHNOLOGIES PVT. LTD.

Registered Office & Works Unit - I

National Highway - 6, Post Office - Argori, Jangalpur,

Howrah - 711302, West Bengal, India.

Works Unit - II

Plot No. 173/A3 & B1, Survey No. 172 , IDA Bollaram, Jinnaram Mandal,

Sangareddy District, Hyderabad, Telengana – 502325, 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

Corporate & Works

Plot No. 173/A3 & B1, Survey No. 172, IDA Bollaram

Jinnaram Mandal, Sangareddy District, Hyderabad

Telangana – 502325, India

Works

Master plot 3-A, Phase-III, WBIDC Plasto Steel Park

Barjora, Bankura – 722168, West Bengal, India

Phone: +91-83369 63718

www.rahee.com

design@innomedia.in

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