BS EN 523:2003

This standard BS EN 523:2003 Steel strip sheaths for prestressing tendons. Terminology, requirements, quality control is classified in these ICS categories:

• 77.140.75 Steel pipes and tubes for specific use
• 01.040.77 Metallurgy (Vocabularies)
• 91.080.40 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.