GB/T 6728-2017: Cold forming hollow sectional steel for general structure

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Scope

This Standard specifies the ordering content, classification, code, cross-section,
dimension and permissible deviation, length and permissible deviation, shape,
weight and permissible deviation, technical requirements and marking example
of cold forming hollow sectional steel for general structure.
This Standard is applicable to round, rectangular and square cold forming
hollow sectional steel (hereinafter referred to as sectional steel) made of cold-
rolled or hot-rolled steel plates, sheets and strips on continuous roll cold forming
units. It is also applicable to continuous hot-dip plated sectional steel. However,
it is not applicable to sectional steel made by drawing, stamping, bending, etc.,
and sectional steel made of galvanized steel plates, sheets and strips which
are cold-formed and welded.
The sectional steel specified in this Standard mainly adopts high-frequency
resistance welding method. It may also adopt argon arc welding or other
welding methods.

Basic Data

Standard ID	GB/T 6728-2017 (GB/T6728-2017)
Description (Translated English)	Cold forming hollow sectional steel for general structure
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H44
Classification of International Standard	77.140.70
Word Count Estimation	26,217
Date of Issue	2017-07-12
Date of Implementation	2018-04-01
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China