Lockable Gas Springs

1. Scope

This standard specifies the terms and definitions, markings, technical requirements, test methods, inspection rules, as well as the requirements for identification, packaging, transportation, and storage of lockable gas springs (hereinafter referred to as “gas springs”).

This standard is applicable to angle – adjustable lockable gas springs and other forms of lockable gas springs except for seat – lifting lockable gas springs, which use nitrogen or other inert gases as the energy – storage working medium.

Seat – lifting lockable gas springs are not applicable to this standard.

2. Normative Referenced Documents

The provisions of the following documents are incorporated into this standard by reference. For dated references, subsequent amendments (excluding corrigenda) or revised editions do not apply to this standard. However, parties to agreements based on this standard are encouraged to investigate the possibility of applying the latest versions of these documents. For undated references, the latest version applies to this standard.

• GB/T 1771 Paints and varnishes – Determination of resistance to neutral salt spray (GB/T 1771—2007, ISO 7253:1996, IDT)
• GB/T 1800.1 Geometrical product specifications (GPS) – Limits and fits – Part 1: Bases of tolerances, deviations and fits (GB/T 1800.1—2009, ISO 286 – 1:1988, MOD)
• GB/T 1805 Spring terms
• GB/T 2348 Hydraulic fluid power systems and components – Cylinder bores and piston rod diameters (GB/T 2348—1993, neq ISO 3320:1987)
• GB/T 2349 Hydraulic fluid power systems and components – Cylinder piston stroke series
• GB/T 2828.1 Sampling procedures for inspection by attributes – Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot – by – lot inspection (GB/T 2828.1—2003, ISO 2859 – 1:1999, IDT)
• GB/T 2829 Sampling procedures and tables for inspection by attributes for periodic inspection of stability of processes
• GB/T 10125 Corrosion tests in artificial atmospheres – Salt spray tests (GB/T 10125—1997, eqv ISO 9227:1990)
• QC/T 484 Automotive paint coatings
• QC/T 625 Coatings and chemical treatment layers for automobiles

Technical Specification for Lockable Gas Springs (English version of national strandard, initiated by LeiYan Gas Springs), proposed and prepared by SAC/TC 235 (National Technical Committee 235 on Spring of Standardization Administration of China).