Hot-Formed (Hot-Finished) Seamless Steel Pipes

These pipes are widely utilized in high-pressure and critical applications, including oil and gas transportation, petrochemical processing, civil and industrial construction, structural engineering, and heavy machinery manufacturing.
Applicable Standards & SpecificationsGOST Standards (CIS / Regional Standard)

GOST 8731-74: Technical requirements for seamless hot-formed steel pipes, specifying steel grades, mechanical properties, testing methods, and quality control.
GOST 8732-78: Dimensional specifications for seamless hot-formed steel pipes, establishing outer diameters, wall thicknesses, and theoretical weights (typically referenced alongside GOST 8731-74).
GOST 32528-2013: General technical specifications for seamless hot-formed steel pipes used in pipelines and structural applications.

International Standards

ASTM A106 / A106M: Standard specification for seamless carbon steel pipe intended for high-temperature service in energy and petrochemical industries.
ASTM A53 / A53M (Type S): Standard specification for seamless carbon steel pipe suitable for pressure, structural, and general engineering applications.
EN 10210: Hot-finished structural hollow sections of non-alloy and fine grain steels (Seamless).