What international standards regulate exported adjustable screw jacks?

As important exported scaffolding supporting components,adjustable screw jacks have standardized international technical specifications,which are mainly based on British BS series standards and European EN standards,widely applicable to Commonwealth countries,European Union regions and global international bidding projects.British standard screw jacks adopt unified inch dimensional parameters and inch thread designs,perfectly matching British-type 48.3mm scaffolding steel tubes and formwork systems,with fixed load grade standards corresponding to different rod diameters and strokes.European EN standard screw jacks focus on structural safety and fatigue resistance,requiring products to maintain stable mechanical performance after multiple turnover uses and repeated load adjustment.Different from domestic conventional products,international standard screw jacks have stricter requirements on thread precision,rod body straightness,base plate thickness and welding firmness.All export products need to pass third-party mechanical tests including ultimate compression load test,repeated adjustment fatigue test and structural stability test,and provide official qualification reports for customer acceptance and project filing.In terms of production and packaging,export screw jacks require standardized batch marking,clear labeling of standard type,specification parameters and anti-corrosion process,and moisture-proof and collision-proof packaging to avoid damage during long-distance sea transportation.Overseas high-standard projects prohibit mixed use of non-standard screw jacks,and product standard compliance is the core threshold for market access.Export enterprises need to classify production according to target market standards,avoid parameter mismatch,and ensure that products meet the safety and quality requirements of global construction engineering,improving international market competitiveness.

References

GB/T 7714‑2015：

BRITISH STANDARDS INSTITUTION.BS 1139-1:2017 Steel scaffolding and access equipment-Part 1:Tubular steel scaffolding and components[S].London:BSI,2017.

MLA 9th：

British Standards Institution.BS 1139-1:2017 Steel Scaffolding and Access Equipment-Part 1:Tubular Steel Scaffolding and Components.BSI,2017.

APA 7th：

British Standards Institution.(2017).BS 1139-1:2017 Steel scaffolding and access equipment-Part 1:Tubular steel scaffolding and components(British Standard).BSI.