GB/T 41749-2022: General requirements for surface condition of hot-rolled sections

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Scope

This document specifies the surface condition classification, measurement rules,
grinding requirements, repair welding and its inspection rules, numerical rounding off
for hot-rolled sections.
This document applies to the surface condition of hot-rolled H-beam and split T-beam,
hot-rolled equilateral angle steel, hot-rolled unequal angle steel, hot-rolled L-beam, hot-
rolled I-beam, hot-rolled channel steel sections (hereinafter referred to as section), of
which the nominal thickness is 3mm ~ 160mm. The surface includes all surfaces except
the rolled edge.

Basic Data

Standard ID	GB/T 41749-2022 (GB/T41749-2022)
Description (Translated English)	General requirements for surface condition of hot-rolled sections
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H44
Classification of International Standard	77.140.70
Word Count Estimation	14,149
Date of Issue	2022-10-14
Date of Implementation	2022-10-12
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration