Producer
Uponor / GF Piping Systems (Georg Fischer)
Swiss industrial conglomerate Georg Fischer AG (SIX: FI-N, HQ Schaffhausen) acquired Uponor Corporation (Helsinki OMX: UNR1V, originally HQ Vantaa Finland) in a completed 2023 merger for approximately €1.6B, integrating the world's largest PEX-a pipe manufacturer into GF Piping Systems. Uponor, founded as Wirsbo Bruks in Sweden and later branded Wirsbo (then rebranded Uponor in 2007), pioneered the PEX-a (Engel/peroxide crosslinking) process for flexible plumbing and radiant heating applications. Uponor's PEX-a tubing is the market-leading premium PEX product in North America, produced at its Apple Valley, Minnesota manufacturing facility — the largest PEX-a manufacturing plant in North America. PEX-a (Engel method) is considered the highest quality PEX because it has the most uniform crosslink density, superior memory (can be expanded with expansion rings for fittings), and can be repaired by applying heat to relax kinks. Uponor held foundational PEX-a process and fitting patents that shaped the entire North American PEX market. Estimated US PEX market share: ~35%.
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1 input Uponor / GF Piping Systems (Georg Fischer) supplies
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2 facilities
Georg Fischer / GF Piping Systems Schaffhausen HQ →
CHSchaffhausen · headquarters
Georg Fischer AG corporate headquarters in Schaffhausen, Switzerland — following the 2023 acquisition of Uponor, this is now the global parent company of the world's largest PEX-a tubing manufacturer. GF Piping Systems is the division that integrates Uponor's PEX product lines with GF's broader piping and flow control portfolio for industrial, building technology, and utility applications. Source: https://www.georgfischer.com/en/divisions/gf-piping-systems.html
Uponor / GF Piping Systems Apple Valley Manufacturing Campus →
USMinnesota · manufacturing
Uponor's Apple Valley, Minnesota campus — the largest PEX-a tubing manufacturing facility in North America. Produces PEX-a tubing (Engel/peroxide crosslinking method) and associated expansion fittings (ProPEX) for residential and commercial plumbing and radiant heating. Apple Valley is Uponor's North American headquarters and primary R&D center. The facility has been expanding capacity to serve growing US PEX demand driven by housing starts. Source: https://www.uponor.com/en-us/about/locations/apple-valley-mn
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PEX-a Pipe & Fittings (Uponor)
45%GF Piping Industrial (Georg Fischer)
30%GF Piping Utility & Building
20%Uponor Europe (Radiant & Hydronic)
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Concentration2023
Uponor's 2023 acquisition by Georg Fischer (GF Piping Systems) for approximately €1.6B united the world's largest PEX-a tubing manufacturer with a Swiss industrial group that also makes industrial-grade polyethylene piping, HDPE fittings, and flow control systems for the semiconductor, chemical, and water utility industries. The combined GF Piping Systems + Uponor entity now holds what may be the single most comprehensive polyethylene pipe portfolio globally — spanning ultra-pure semiconductor fab fluid handling to residential PEX radiant heating. This merger also transferred the world's largest collection of PEX-a process patents from Uponor (a Finnish listed company) to Georg Fischer (a Swiss private industrial group with no prior residential plumbing exposure), concentrating PEX-a intellectual property and production know-how in Swiss corporate hands. Wirsbo/Uponor's foundational PEX-a Engel-method patents have largely expired, but GF inherits accumulated manufacturing process expertise and the ProPEX fitting ecosystem lock-in.
Georg Fischer AG ↗Origin2023
Georg Fischer AG was founded in 1802 in Schaffhausen, Switzerland — a city on the Rhine River at the site of the Rhine Falls, the largest waterfall in Europe by volume (23 million liters per second at peak flow). The Rhine Falls provided waterpower for early 19th-century iron casting and metalworking, making Schaffhausen a natural industrial location in the era before steam power. GF has been continuously manufacturing in Schaffhausen for 223 years — surviving Napoleon's wars, two World Wars, and Switzerland's 20th-century industrial transformation. The company evolved from iron castings to ductile iron pipes (for municipal water distribution) to thermoplastic piping systems (PVDF, PP, PE for industrial and building applications). In 2023, GF Piping Systems acquired Uponor Corporation — a Finnish-registered company descended from Wirsbo Bruks, a Swedish sawmill that pioneered PEX-a (peroxide crosslinked polyethylene) pipe manufacturing in the 1970s, and was the world's first PEX-a manufacturer. The 2023 merger combined a 220-year-old Swiss foundry company with the world's leading PEX-a plumbing manufacturer — a Swiss iron-to-pipe company from the Rhine Falls era absorbing a Swedish-Finnish plastic pipe innovation company that built the North American flexible plumbing market.
Georg Fischer AG ↗