This part of GB/T 1239 specifies the technical requirements, test methods, inspection rules, packaging, marking, transportation, and storage requirements for cold coiled helical torsion springs with circular sections.
This part is applicable to cold coiled helical torsion springs with circular sections (hereinafter referred to as springs), with a diameter of greater than or equal to 0.5mm.
This part is not applicable to springs with special requirements.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of GB/T 1239. For dated references, subsequent amendments to (excluding corrections to), or revisions of, any of these publications do not apply. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. For undated references, the latest editions apply to this part.
GB/T 1805 Nomenclature of springs
GB/T 4357-1989 Carbon spring steel wires (neq JIS G3521:1984)
GB/T 18983 Oil-hardened and tempered steel wire for mechanical springs (GB/T 18983-2003, ISO/FDIS 8458-3:1992, MOD)
