AISI 304 seamless steel pipe OD:32-750MM WT:2.5-75MM Printing, ... steel is shaped into a hollow tube. The seamless pipe is then finished to dimensional and wall thickness specifications ... technologyHot rolledCold rolledSurface treatmentCopper coatedGalvanizedothersortingStructural pipe, fluid pipe, boiler pipe, oil pipe, gas pipe, API pipe, alloy steel pipe, carbon steel pipe and so on. AISI 304 ...