Class 4 office chair gas lift for higher-strength chair platforms.
For buyers comparing higher-strength gas cylinders, Samiktech offers Class 4 configurations with QPQ and hard-chrome engineering routes, subject to certificate and model scope.
Class 4 selection
Designed for demanding seating programs.
Class 4 is often requested for projects with stronger load expectations, export-market compliance review, or branded chair programs that need clearer test documentation.
Typical stroke70–270 mm
Pressure tubeØ28 options
Finish routeQPQ / hard chrome
Product detail
Class 4 does not mean one fixed model.
Different chair programs may require different stroke, pressure tube, force and surface-treatment combinations. Samiktech reviews the customer drawing or sample before confirming the production model and certificate match.
- Ø28 × 2.0 mm QPQ configurations
- Ø28 × 2.5 mm hard-chrome configurations
- Private marking and batch traceability
