Seamless stainless steel pipes for chemical, food, pharmaceutical industries, power engineering, and heat exchange equipment. Grades: AISI 304 (08Х18Н10Т), AISI 316/316L (10Х17Н13М2), AISI 321 (12Х18Н10Т — heat-resistant). Diameter 6–219 mm, wall thickness 0.5–20 mm. Surface: matte, polished (Ra 0.8 for pharmaceuticals). GOST 9941-81 (cold-deformed), GOST 14162-79 (hot-deformed). Application: pipelines for aggressive media, heat exchangers, food lines, pharmaceuticals, petrochemicals. Application of stainless pipes: heat exchangers (U-shaped bundles, shell-and-tube), pipelines for aggressive media (acids, alkalis), food lines (milk, beer, juices), pharmaceuticals (WFI, clean steam), petrochemicals. Internal surface polishing for pharmaceuticals: Ra 0.4–0.8 µm. Orbital TIG welding — automatic. Documentation: certificate 3.1, PMI protocol (material identification).