Firma Instal Ostrowiec Sp z o.o. was established in 2005. We at Instal Ostrowiec enjoy an outstanding esteem in the European market thanks to many years of experience in the fabrication of high-quality flanges for piping connections and in the industrial valves and fittings sector. With decades of experience in domestic and foreign markets, our portfolio includes many trading partners.
Instal Ostrowiec is an expert manufacturer of steel flanges and interface rings:
- welded flat-face flanges
- blanking flanges
- neck flanges
- threaded flanges
- loose flanges
- adapter flanges
- custom flanges (per entrusted engineering drawings, including square and rectangular flanges)
Industrial valves and fittings:
- short-radius elbows
- tees
- tank bottoms
- threaded sockets/li>
- threaded spigots
- symmetrical Venturi nozzles
- asbestos-free gaskets


The priority of Instal Ostrowiec is to fulfil each order without fail. The steel products supplied by Instal Ostrowiec are of the highest quality, comply with all international standards and are always delivered on time, according to our customers’ needs. Since 2006, we at Instal Ostrowiec have had an ISO 9001:2015 Quality Management System and a quality system in place for the production of materials/components for pressure equipment per the
The customers can rely on an swift and professional service provided by qualified staff and technical facilities; we are always ready to take on and deliver custom projects. Instal Ostrowiec flexibly adapts to the increasing demands of the market, ensuring quick and timely order fulfilment. We highly value ongoing cooperation and the satisfaction of our customers. We are open to new business contacts. We are always prepared to negotiate prices and financial terms of your business.
Explore our product range and join the growing portfolio of satisfied customers.