This document specifies the classification and codes, order contents, manufacturing processes, technical requirements, test methods, inspection rules, packaging, marking and quality certificate for welded stainless steel tubes used for mechanical structures. This document applies to welded stainless steel tubes (hereinafter referred to as “steel tubes”) used for machinery, automobiles, rail vehicles, marine engineering, oil and gas engineering, and other structural applications.
Basic Data
Standard ID
GB/T 12770-2025 (GB/T12770-2025)
Description (Translated English)
Welded stainless steel tubes for mechanical structures
Sector / Industry
National Standard (Recommended)
Classification of Chinese Standard
H48
Classification of International Standard
77.140.75
Word Count Estimation
22,277
Date of Issue
2025-08-29
Date of Implementation
2026-03-01
Older Standard (superseded by this standard)
GB/T 12770-2012
Issuing agency(ies)
State Administration for Market Regulation; Standardization Administration of China
