The global all-welded ventilation duct market is projected to grow at an annual rate of 4–6% from 2026 to 2035, with the market index expected to reach approximately 155 by 2035, based on 2025. New semiconductor plants and accelerating industrial automation are expected to drive growth.
The global all-welded ventilation duct market is entering 2026 as demand broadens and supply chains become more regionally diversified. Demand for high-pressure-resistant, all-welded ventilation ducts is expected to expand, supported by new semiconductor plants and increased capital investment in precision electronics manufacturing. Products suited to cleanrooms and high-pressure ventilation systems are being adopted, while certified, high-value-added products are expected to command a price premium.
By region, Asia-Pacific holds a leading position in both demand and production, accounting for approximately 45–55% of global consumption and 55–65% of production capacity. Assembly hubs in China, Taiwan, South Korea and Southeast Asia form the core of the market, supported by the cost advantages and proximity of local manufacturers.
By market segment, demand is structured around semiconductors and precision manufacturing, industrial automation and measurement equipment, electronics and optical systems, OEM integration and custom applications, and maintenance and replacement, in that order. Demand for customized products meeting specific pressure ratings and dimensional requirements is expected to remain firm across all segments. Replacement demand is expected to follow a stable cycle, accounting for approximately 30–40% of the total market.
The market is led primarily by major multinational groups, including Lindab Group, Swegon Group, TROX GmbH and Systemair AB. By region, Asia-Pacific, North America and Europe play important roles in the market structure. Through 2035, market forecasts point to stronger emphasis on certification and quality documentation alongside overall market growth.