Research and Development > JFE TECHNICAL REPORT > No.14 Special Issue on “Super High-Rise Buildings” and “Steel Sheet Construction Materials” > High Strength and Heavy Wall Thickness Steel Pipes for Building Structures
No.14 Special Issue on “Super High-Rise Buildings” and “Steel Sheet Construction Materials”
High Strength and Heavy Wall Thickness Steel Pipes for Building Structures
SUEISHI Nobuyuki ARAKAWA Takekazu OHMORI Akio MATSUI Tokumi
Abstract
In recent years higher tensile strength and heavier section of steel pipes have been required for building structures. JFE Steel has developed a series of steel pipes from 550 to 780 N/mm2 tensile strength class (from 385 to 630 N/mm2 yield strength class) by applying high performance steel plates. Mechanical properties of the pipes, particularly yield strength (YS) and yield ratio (YR), are focused in order to achieve high performance for the building frames. Both low YR and high YR (high YS) types of pipes, which are required according to various design requests, can be produced through controlling the mechanical properties of applied plates and the manufacturing processes of the pipes.
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