BS EN 523:2003

1 Scope
2 Normative references
3 Terms and definitions
4 Classification
5 Requirements
6 Technical documents, delivery ticket, marking and labelling
7 Storage
8 Procedures for the evaluation of conformity
Annex A (informative) Explanatory notes
Annex ZA (informative) Clauses of this European standard
                       addressing the provisions of the EU
                       Construction Products Directive

Applies to uncoated cylindrical steel sheaths with a corrugated profile and with a nominal internal diameter of up to 130 mm and their connectors (couplers) which are assembled to form ducts for prestressing tendons in post-tensioned prestressed concrete structures.

This European Standard is applicable to uncoated cylindrical steel sheaths with a corrugated profile and with a nominal internal diameter of up to 130 mm and their connectors (couplers) which are assembled to form ducts for prestressing tendons in post-tensioned prestressed concrete structures. It is only applicable to sheaths and connectors made of interlocked or welded steel strip ¹⁾. It does not cover plastic sheaths ²⁾.

The seals required between sheaths and couplers are not covered by this standard.