Pultruded Fiberglass Components
About Us
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Established in 1976, Mihir Engineers Limited today is one of the
largest manufacturers of FRP and RCC Cooling Towers with over
27,000 installations in India & abroad
It gives us immense pride in introducing our new group company
“Stronglite Composites”. Stronglite Composites specializes in range
of PULTRUDED FRP profiles.
Our Pultruded profiles are manufactured at a state of the art
Pultrusion Manufacturing Facility equipped with a state of the art
Material Testing Facility at Rajpur in Gujarat giving us complete
control over Design, Manufacturing and Quality Control for these
components.
All our profiles are tested and certified to possess mechanical
properties comparable to steel by the Department of Aerospace
Engineering at IIT Madras
Pultrusion Process
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Pultrusion is a continuous process for manufacture
of composite materials with constant cross-section
The unique advantages possible with FRP have
enabled pultruded profiles to penetrate markets
where other materials could not meet the design or
end use requirements efficiently
Pultruded Fiberglass v/s Traditional
Materials
Physical & Chemical
Properties
Pultruded
FRP
Rigid
PVC
Mild
Steel
Stainless
Steel
Wood
Specific Gravity
1.8
1.38
7.8
7.92
0.52
Thermal
Conductivity
(Kcal/hr/m2/° C)
24.4
6.4
1220
732.00
0.4
Coeff. of Linear
Expansion
(cm/cm° C) x 10-6
5.2
37
8
10
1.7
Safe Working Temp.
(° C)
130
55
600
600
160
Flame Resistance
Good*
Poor
Excellent
Excellent
Poor
a. Acidic
Excellent
Good
Poor
Excellent
Poor
b. Alkaline
Good
Fair
Good
Excellent
Poor
c. Solvents
Fair
Poor
Good
Excellent
Fair
d. Coastal
Environment
Excellent
Good
Poor
Excellent
Fair
e. Outdoor
Exposure
Excellent
Poor
Fair
Excellent
Fair
f. Effluent Water
Excellent
Good
Poor
Excellent
Fair
g. Steam
Good
Poor
Fair
Excellent
Fair
Corrosion
Resistance
Pultruded Fiberglass v/s Traditional
Materials
Mechanical Properties
Pultruded
FRP
Rigid
PVC
Mild
Steel
Stainless
Steel
Wood
Tensile Strength
(N/mm2)
382
44
340
340
80
Flexural Strength
(N/mm2)
468.3
70
380
380
12
Flexural Modulus
(N/mm2)
22489
2400
19600
0
196000
700
Izod Impact
(Kg.m/cm)
2.15
0.09
1.5
0.53
-
Product Advantages
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Corrosion Resistance
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Strength
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FRP structural products are corrosion resistant to a broad range of
chemicals. In many structural applications where wood rots and metals
corrode, pultruded FRP products will last indefinitely with little or no
maintenance.
Stronglite's pultruded structural shapes have a high strength-to-weight
ratio and pound for pound are stronger than steel in the lengthwise
direction.
Weight
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FRP materials are light weight. Generally on an equal volume basis,
pultruded fiberglass will weigh only 25% of the weight of steel
and 70% of the weight of aluminum. This feature can significantly
impact installation costs, reduce the risk for injury and result in less
structural support from foundations or supporting structures
Product Advantages
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Electrical Conductivity
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Thermal Conductivity
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Fiberglass products are extremely low in electrical conductivity.
Nonconductive products provide significant safety benefits in many
applications such as those found in electrical substations products and
power poles
Fiberglass products are low in thermal conductivity and FRP products do
not expand or contract like metals. This feature can provide a significant
degree of thermal insulation
Ease of Fabrication
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FRP can be field fabricated using simple carpenter tools with carbide or
diamond tip blades; no torches or welding is required. Fiberglass
materials are also lightweight, resulting in easier erection and
installation.
Various Products & Markets
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Pultruded Fiberglass Profiles can be used in various
applications:
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Structural Applications – Cooling Towers, Work Platforms,
Structural Beams, Scaffolding
Electrical Applications – Utility Poles, Cross Arms
Access Systems – Ladders, Staircases & Related Structures
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Gratings - Walkways, Maint. & Operator’s Platforms, Machine
Decks, Floors, Pallets, Covers (for Tanks, Gutters & Trenches etc.)
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Cable Trays Systems - Perforated & Ladder Type with all
accessories
Fiberglass Pultruded Grating
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FRP Grating made out of pultruded section is an ideal solution for the
corrosion problems faced in Industrial environments
It is an ideal replacement for steel or aluminum gratings used in highly
corrosive atmosphere
FRP Grating often outlasts steel 20 to 1 times and it is a long term
investment, where frequent grating and walkways replacement cost are
unacceptable
Mechanical Properties of Fiberglass
Pultruded Gratings
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Pultruded Gratings are manufactured by assembly of Pultruded
I Beams (Load Bearing members) & Pultruded Cross Rods (Cross
Locking members)
The distance between the I Beams is 40 mm, whereas the
distance between the Cross Rod varies as per the Load
requirement of the application.
Cross Rod Distance
Recommended Load
I-Beam Size 25 MM
I-Beam Size 30 MM
300 MM
400 Kg/ Sq. Mtr
500 Kg/ Sq. Mtr
200 MM
500 Kg/ Sq. Mtr.
750 Kg/ Sq. Mtr
150 MM
750 Kg/ Sq. Mtr.
1000 Kg/ Sq. Mtr
90 MM
1000 Kg/ Sq. Mtr.
1250 Kg/ Sq. Mtr
Cable Management System
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FRP Cable Trays are of the highest quality, they are
strong, chemical resistant, fire retardant, Have
electric insulation and are UV protected.
FRP Cable Trays are lightweight, cut to length and
can be quickly installed.
Handrails & Ladder Systems
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FRP Handrail, Ladders and Access Systems offer long life, low maintenance
solutions
Our Access Systems are lightweight and offer high resistance towards
corrosion. Easy to fabricate, the installed cost of composite Handrails and
Ladders is often lower than that of steel
Being a fiberglass reinforced composite, the handrails and ladders are
thermally and electrically non conductive, offer excellent UV resistance and
are extremely durable in extreme outdoor environments
Fiberglass Crossarms
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Fiberglass Crossarms are designed for the standard
crossarm load capacity as specified by Bureau of
Indian Standards IS 10192-1982 (Reaffirmed in2005)
Fiberglass Crossarms offer the following advantages
High Strength
 Light Weight
 Long Life
 Easier to install
 Excellent Electrical Properties
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Fiberglass Crossarms As Alternative to
Steel Crossarms
ADVANTAGE OVER CONVENTIONAL CROSS ARMS
PROPERTIES
STEEL
WOOD
FIBRE GLASS
INSULATION
GOOD
CONDUCTOR
BAD CONDUCTOR
INSULATOR
CORROSION
HIGH
CORROSION
ROTS &
DETERIORATES
NON CORROSIVE
WEIGHT
HEAVY
HEAVY
LIGHT
INSTALLATION
CUMBERSOME
CUMBERSOME
EASY
Cooling Tower Solutions
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There is an increasing demand for the use of composites in
cooling tower applications
We manufacture a complete range of composite products for
use in Cooling Towers including
Pultruded Structural Frame
Pultruded Decking
Partition Walls & Claddings
Pultruded Stairways & Walk
Ways
Ladders & Handrails
Louvers
Cable Management Systems
Thank You