the intersection of quality and performance


Welded stainless steel pipes and tubes from OSTP are prepared for the harshest environments and a diverse range of demands.

Our process pipes transport corrosive, flammable and toxic medias in applications from pulp and paper production to petrochemical manufacturing, but they can also be found moving water and wastewater. Often used in heat exchangers, our stainless steel tubes are subjected to temperature extremes while cooling, heating, evaporating or condensing.


OSTP process pipes

Available in three primary dimensional systems: ISO, ANSI and Metric Tru-Bore. Usually made from cold or hot rolled slit coils or plates in 2B, 2E or 1D raw. 




OSTP heat exchanger tubes 

delivered to international standards and customer requirements. Normally supplied in annealed and pickled condition and fixed lengths but they can also be delivered in other executions upon request, and with special tolerances determined by customers.


circular hollow sections 

OSTP also provides circular hollow sections used in everything from architecture to automotive applications.