Cold-Formed Steel Pipes and Tubes

Cold-formed steel tubes are manufactured from pre-formed hot-finished tubes or tube hollows using cold rolling or cold drawing processes without prior heating. This process improves dimensional accuracy, surface finish, and the mechanical properties of the tube (such as strength). These tubes are used in applications where precision, surface smoothness, and higher mechanical characteristics are critical, such as in hydraulic systems, the automotive industry, and furniture manufacturing.
Key Standards for Cold-Formed Steel Pipes and Tubes:

GOST 8733-74: Specifies technical requirements for seamless cold-formed steel tubes. It covers steel grades, mechanical properties, test methods, and tolerances.
GOST 8734-75: Defines the range of sizes (dimensions) for seamless cold-formed steel tubes. It includes a wide range of diameters and wall thicknesses with high precision. This GOST standard is frequently used in conjunction with GOST 8733-74.
GOST 32529-2013: Seamless cold-formed steel tubes for pipelines and structural applications. General technical specifications. A modern standard analogous to GOST 32528-2013 for hot-finished tubes.
International Standards:
ASTM A179: Standard Specification for Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes.
ASTM A192: Standard Specification for Seamless Carbon Steel Boiler Tubes for High-Pressure Service.
EN 10305: Steel tubes for precision applications. Parts of this standard (e.g., EN 10305-1, EN 10305-2) cover cold-drawn and cold-rolled precision tubes.