From where PEX pipe was born to Istanbul, on the same path.
Since 1989 we have been the authorised partner in Türkiye, first of Wirsbo and today of Uponor. It is a road that runs from Virsbo in Sweden, where PEX pipe was first produced, to construction sites in Istanbul.
Uponor · GF groupAuthorised partner since 1989Two stories, one line
Uponor’s growth story and PEXa’s journey in Türkiye have moved forward side by side since 1989.
- 1972
Wirsbo started PEX pipe production
PEX pipe was produced for the first time in the world at the Virsbo plant in Sweden.
- 1988
Uponor acquired Wirsbo
Uponor entered the hot water pipe business by acquiring Wirsbo and Hewing in Germany.
- 1989
Wirsbo sole authorised distributorship
Our family’s company ISIYER became Wirsbo’s sole authorised distributor in Türkiye.
- 2006
One brand: Uponor
Uponor brought all its businesses, including Wirsbo, together under a single brand.
- 2010
PEXa Boru Sanayi A.Ş.
The PEXa brand was registered and our company was founded; the Uponor partnership continued under a new roof.
- 2023
Uponor in the GF group
Having joined the Swiss GF group, Uponor continues as a product brand within the GF Building Flow Solutions division.
- 2024
Virsbo carbon neutral
The Virsbo factory, where PEX was born, has reached carbon neutrality in its own operations.
Systems we build in the field
Clean water, underfloor heating, ceiling heating and cooling, and smart control. We turn the Uponor product range into projects with PEXa engineering.

Heating and plumbing materials
Manifolds with flow indicators, Q&E fittings, clean water plumbing materials and control products.
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Uponor Thermatop M
Ceiling heating and cooling panels: high comfort, low energy consumption.
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Uponor control systems
Heating and cooling control with a touch interface and humidity sensor; fully compatible with Bioiklim.
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Clean water plumbing
Long-lasting, trouble-free drinking water installations with PEXa pipe and Uponor fittings.
Go to pageThe material itself is engineering.
At the heart of Uponor pipes is cross-linking technology, which binds the molecules of polyethylene to one another.
- 01
Cross-linked structure
In PEX-a production, polyethylene chains bond together like a net; the pipe becomes resistant to heat, pressure and wear.
- 02
Shape memory
An expanded pipe returns to its original diameter. In a Q&E connection, the pipe settles tightly onto the fitting by itself.
- 03
Documented compliance
ISO 15875, health and CE certificates and technical data are on our Certificates page.
Latest from Uponor

Virsbo factory carbon neutral
The Virsbo plant, where PEX has been produced since 1972, became Uponor’s second carbon-neutral factory after Nastola.
Read the news →Uponor S-Press PLUS installation
Step-by-step fitting installation and other field videos.
ReferencesOur projects in Istanbul
From villas to shopping malls, installations built with PEXa pipe and Uponor systems.
DocumentsCertificates and technical data
ISO 15875, ISO 10993, CE and material properties.
Quotes and technical support for Uponor systems
Talk to our team about product selection, project calculations and installation.
