ISO 8521:2009 Preview

Plastics piping systems -- Glass-reinforced thermosetting plastics (GRP) pipes -- Test methods for the determination of the apparent initial circumferential tensile strength

ISO 8521:2009 specifies six test methods for the determination of the initial circumferential tensile wall strength per unit of length of glass-reinforced thermosetting plastics (GRP) pipes.

NOTE Another commonly used term for “circumferential tensile strength” is “hoop tensile strength” and the two expressions can be used interchangeably.

The burst test (method A) is suitable for all types and sizes of pipes. It is considered the reference method. However, all the methods in ISO 8521:2009 have equal validity. If correlation of any of the methods B to F can be established by a comparative test programme, then that method can be considered as the reference method. The split disc test (method B) might not be suitable for pipes with helically wound reinforcing layers. The strip test (method C), the modified strip test (method D) and the restrained strip test (method E) are suitable for pipes with a nominal size of DN 500 and greater. The notched plate test (method F) is primarily intended for use with helically wound pipes of nominal size greater than DN 500 with a winding angle other than approximately 90°.


General information

  • Status :  Published
    Publication date : 2009-08
  • Edition : 2
    Number of pages : 18
  • :
    ISO/TC 138/SC 6
    Reinforced plastics pipes and fittings for all applications
  • 23.040.20
    Plastics pipes

Buy this standard

Format Language
PDF
Paper
  • CHF88

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)

Keep up to date with ISO

Sign up to our newsletter for the latest news, views and product information

 Subscribe