T/SSEA 0297-2023 Square and rectangular welded steel pipes used in mechanical structures
T/SSEA 0297-2023 Square and rectangular welded steel pipes used in mechanical structures
Basic Information
Scope
Main technical content: This document specifies the ordering content, classification and code, cross-section, dimensions, appearance, weight, technical requirements, test methods, inspection rules, packaging, marking, and quality certificates of square and rectangular welded steel pipes used in mechanical structures. This document is applicable to square and rectangular pipes (hereinafter referred to as square and rectangular pipes) produced by hot-rolled steel strips on continuous roll cold bending machines and used in machinery, automobiles, furniture, and other mechanical components and structural parts. Square and rectangular pipes produced by drawing, extrusion, bending, etc. can also be used as reference. The square and rectangular pipes specified in this document are mainly made by high-frequency resistance welding, and other welding methods can also be used.