GB/T 3273-2026: Hot-rolled steel sheet and strip for automobile frames

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Scope

This Document specifies the classification, codes, notations for designations, ordering details,
manufacturing process, technical requirements, test methods, inspection rules, packaging,
marking, and quality certificate for hot-rolled steel plates and strips used in automobile frame.
This Document applies to hot-rolled steel plates and strips (hereinafter referred to as "plates
and strips") with a thickness not exceeding 18.0 mm used in the manufacture of longitudinal
and transverse beams of automobile frames.

Basic Data

Standard ID	GB/T 3273-2026 (GB/T3273-2026)
Description (Translated English)	Hot-rolled steel sheet and strip for automobile frames
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	H46
Classification of International Standard	77.140.50
Word Count Estimation	54,527
Date of Issue	2026-03-31
Date of Implementation	2026-10-01
Older Standard (superseded by this standard)	GB/T 3273-2015
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration