GOEL SCIENTIFIC GLASS WORKS LTD. is one of the leading
Scientific glass fabricator in the world, who has provided
the Glass Industry of India a big leap in the Global
Market. We have made presence in all the populated continents and are
representing & supplying our product & service
worldwide. At present, we have over 250 satisfied customers across the
globe.
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We fabricate glass parts from best raw material from
various leading manufacture for its production. On request, we also
produce glass parts from Leading European Borosilicate
Glass 3.3 tubing supplier which fulfills all major standards of DIN
ISO 3585 & ASTM E438 Type I, Class A and thus offering
high accuracy & excellent optical properties which is at par to
other leading manufactures across the globe.
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Understanding the Glass at it's best, we forge Glass with
the precise mixed combination of craftsmanship of Potter,
Blacksmith & Goldsmith with a blend of engineering,
being “The Transparent Specialist”.
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We specialize in design, fabrication, engineering,
installation & commissioning of Pilot Plant/Mini-Plant & Standard
Distillation Unit for Research & Development. All
glass parts are designed, fabricated, tested & installed as per
International Norms like ISO 3585, 3586, EN BS 1595, AD
2000 Merkblatt. On request, glass pilot plant parts are available
with CE Marking & documentation with added monetary
value.
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We have been launching an entire range of glass equipments
in the Indian & global market. A few are as below:
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Developed the unique XTRONG RANGE, which possess a
tightening strength as high as 3 times than
earlier conventional ones and thus almost eliminates
leakage and breakage problems while tightening.
1990:
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Introduced Glass Shell & Tube Heat Exchangers for the
first time in Indian market.
1994:
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Started “Process Plant Division “ for the development of
New Products.
1998
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Started manufacturing Spherical Vessels from an entirely
new technique very first time in the country,
placing us at par with overseas manufacturers of such
vessels.
2000:
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Became the first ISO-9001 certified company in the “Glass
Equipment Manufacturing “segment in India.
2002:
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Successfully executed export order of 640,000 multi-necked
flasks within a time period of 8 months.
2003:
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Developed 300-Litre Spherical Vessel & participated as
exhibitor in ACHEMA-2003, Frankfurt, Germany.
2004:
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800 DN pipe section manufacturing for the first time in
India.
2005
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Manufactured 500 Ltr. Spherical Vessel.
2006:
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Participated in ACHEMA-2006 for 2nd time & given
seminar on “Jumbo Rotary”at Frankfurt, Germany.
2007:
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Developed FLEX-HE (Assembled coil type) heat exchangers.
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Awarded for outstanding performance for the year 2006 - 07
by Govt. of Gujarat, Ministry of Ind. & Mines.
2009:
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Manufactured for the first time 800 Ltr. Kettle and
participated in ACHEMA -2009 at Frankfurt, Germany for
the consecutive 3rd time.
2010:
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Developed Flexi Double Jacketed Vessel (Triple Wall –
Detachable Jacket)
2011:
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Developed Assembled Jacketed Vessel up to 200L Capacity.
2012:
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Laboratory works require apparatus
made in a Borosilicate 3.3 expansion glass which offers maximum
inertness to widest range of
chemical substances, withstand thermal shock, high temperature without
deforming and resilient enough to
withstand the normal laboratory handling, washing and sterilizing
processes.
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Borosilicate glass represents
unmatched standardized glass for construction of Laboratory
Glasswares. Its steadly growing
use is due to many advantages over conventional materials.
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Borosilicate glass is chosen for
its unique chemical and physical properties. Borosilicate glass can be
considered as being composed of
oxides. Silica (SiO2 ), boric oxide (B2O3 ) and phosphorous
pentaoxide (P2O5 ) are chief
glass form oxides. Soda (Na2O), Lime ( CaO ), Alumina (Al2O3 ) Potash
(K2O) Magnesia (MgO) and lead
oxide (PbO) are the principle modifiers/fluxes.
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CHEMICAL COMPOSITION
The composition of borosilicate
glass used has following approximate composition.
SiO2 - 80.6
%B2 O3 - 12.5%
Na2O - 4.5 %Al2 O3 - 2.2
%
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RESISTANCE
TO CHEMICALS
Borosilicate glass is inert to
almost all materials except hydrofluoric acid (HF) phosphoric acid (H3PO4)
and hot strong caustic solutions.
Of these, Hydrofluoric acid has the most serious effect, even when it is
present in PPM (parts per million)
in solutions, Whereas phosphoric acid and caustic solutions cause
no problems when cold but at
elevated temperature corrosion occurs. In case of caustic solutions upto
30% concentration can be handled
safely at ambient temperature.
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Under actual operating conditions,
the effect of turbulance, and traces of other chemicals in the
solution may increase or decrease
the rate of attack. So it is not possible to give exact figures for
corrosion by caustic solutions.
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THERMAL
PROPERTIES
Linear coefficient of thermal
expansion the coefficient of thermal expansion of borosilicate glass over
the temperature 0-300 OC is
33 x 10-7 / OC. This is very low when compared with other glasses
and
metals. That is why borosilicate
glass is often called low expansion borosilicate glass.
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SPECIFIC HEAT
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Specific heat between 25OC and 300
C is average to be 0.233Kcal/Kg C.
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Thermal conductivity is 1.0
Kcal/hr. m C over the permissible operating temperature range.
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ANNEALING
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Annealing of glass is the process
where the glass is heated and kept for a defined period of time to relieve
internal stresses. Careful cooling under controlled conditions is essential
to ensure that no stresses are reintroduced by chilling/cooling.
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MECHANICAL
PROPERTIES
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The lack of ductility of glass
prevents the equalization of stresses at local irregularities or flaws and
the
breakage strength varies
considerably about a mean value. This latter is found to occur at a tensile
strength of about 700kgs/cm.
In order to allow for the spread
of breaking stress, a large factor of safety is applied when determining the
wall thickness requirement to
allow operation up to specified limit of working pressure.
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OPTICAL
PROPERTIES
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Borosilicate glass shows no
appreciable absorption in the visible region of spectrum and therefore
appears clear and colorless. In photo chemical process the transparency of
ultra violet is of particular importance. It follows from the transmittance
of material in UV region that photochemical reactions such as chlorination
& sulpho -chlorination can be performed in it.
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Head
Office :
C-31/A, Sardar Estate, Ajwa Road,
Vadodara - 390 019 Gujarat, India
Ph. : +91-265-2561595, 2521181 l
Fax : +91-265-2561482, 2511428
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