INTRODUCTION
ABOUT „HRONAS“
JSC „Hronas“ was established in 1993. The Company started with importing
and installing plastic windows. Early in 1994 the new production equipment
was brought to and window production started in Lithuania. During seven
years of strenuous work the Company has gradually introduced one of the
most state-of-the-art aluminium, plastic and wooden construction production
processes in Europe. Fulfilment of projects, which value exceeds LTL 1mil.,
has become our daily routine. Though we produce in great volumes, we
consider each customer as exceptional and prime.
Striving to meet customers’ interests to the best advantage, we have
introduced quality management system corresponding with the requirements of
international ISO 9002 standards. We do our best for the Company,
permanently improving the quality of its products and services, to become a
reliable partner for everybody: the customer, the architect, the designer.
ACTIVITY
Designing, production, sale, installation of windows, doors, facades,
conservatories, interior partitions of wooden, plastic and aluminium
profiles, and warranty service.
VOLUME OF PRODUCTION
In 1999 over 50 thus. m2 of products were manufactured and sold for more
than LTL 25 mil.
|QUALITY MANAGEMENT |
|[pic] |The Company has completed introduction of the quality management |
| |system corresponding with the requirements of international ISO 9002|
| |standards. |
|MEMBERSHIP |
|[pic] |Hronas is one of the originators and founders of the Republican |
| |Association of Window and Door Manufacturers. |
|ATTESTATION |
|[pic] |The Company is attested by the Ministry of Environment of the |
| |Republic of Lithuania to perform works in explosive and |
| |fire-hazardous zones and in priority engineering developments. |
|CERTIFICATION OF PRODUCTS |
|[pic] |All the Company’s products are certified by the Construction |
| |Products Certification Center of the Republic of Lithuania and by |
| |the Certification Center of the Latvian Academy of Science. |
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QUALITY
Seeking to be a reliable partner for all our customers, we undertake:
[pic] To adhere strictly to the requirements of the production process.
[pic] To promote the concept of top-quality products among the
staff and to suggest it to the customers.
[pic] To use only declared materials while manufacturing products.
[pic] To draw up as detailed design and production documentation as
possible.
[pic] To improve constantly the activities of the Company, which would
ensure more effective cooperation between all levels of production in
customer service.
[pic] To improve the employees’ qualifications and enhance interest in
qualitative work.
[pic] To master new high-quality materials and production processes.
[pic] To seek the level of customer service to be considered the highest
in Lithuania ranking among the enterprises of the same type.
General Director
Valdemaras Eicas
|P R O D U C T S | |
MULTIPLE GLAZING
Hronas uses companies’ Saint-Gobain and Pilkington float glass for
producing multiple glazing units.
The main criteria determining the choice of the type of multiple glazing
are thermal and sound insulation, light transmission.
Thermal Insulation
Currently, a single-chamber multiple glazing unit having two transparent
panes and featuring heat transmission of 2,8 W/m2 K is the most popular in
Lithuania. A tendency of choosing multiple glazing units with the heat
transmission of 1,1 W/m2 K for both individual houses and blocks of flats
becomes more and more obvious. The multiple glazing units featuring such
low heat transmission consists of an ordinary pane and a pane having soft
elective coating on it. Multiple glazing units with intermediate thermal
characteristics are also available. These are multiple glazing units
consisting of either two panes, one of which has hard selective coating on
it, or three panes. The heat transmission of these multiple glazing units
is 1,8 W/m2 K.
Sound Insulation
The sound insulation of a single-chamber multiple glazing unit having two
4 mm panes is more than 28 dB, while the sound insulation of a double-
chamber multiple glazing unit having three 4 mm panes exceeds 32 dB.
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Light transmission
|Glass type |Light |Light |
| |transmissi|reflecti|
| |on |on |
|Transparent glass|0,89 |0,08 |
|Green tinted |0,78 |0,07 |
|glass | | |
|Brown tinted |0,61 |0,06 |
|glass | | |
|Grey tinted glass|0,55
|0,05 |
|Reflective glass |0,34 |0,46 |
|Glass with hard |0,84 |0,14 |
|selective coating| | |
|Glass with soft |0,86 |0,10 |
|selective coating| | |
The above values are specified for 4 mm thick glass.
INTERNAL WINDOWSILLS
Internal windowsills can be made of wood, particleboard or all plastic.
Wooden windowsills best match wooden windows. Plastic windowsills are
recommended for rooms with high humidity. It is particleboards, which are
currently the most popular due to their price, appearance and performance.
EXTERNAL WINDOWSILLS
External windowsills made of galvanised steel sheet look habitual in