This standard specifies a method for determining the tensile strength of a seam in a spirally-formed thermoplastics pipe. It is applicable to all such thermoplastics pipes, regardless of their intended use.

2 Normative references

This standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter.

For dated references, subsequent amendments to, or revisions of, any of these publications apply to this standard only when incorporated in it by amendment or revision.

For undated references the latest edition of the publication referred to applies.

ISO 5893:1993, Rubber and plastics test equipment Tensile, flexural and compression types (constant rate of traverse) Ð Description

3 Principle

Test pieces of specified shape and dimensions are taken from a thermoplastics pipe with a spirally formed seam in the direction perpendicular to the seam, by cutting or machining.

The tensile forces necessary to rupture test pieces including the seam are determined using a tensile testing machine under specified conditions.

NOTE It is assumed that the following test parameter is set by the standard making reference to this standard:

a) rate of movement of the driven grip (see 4.1 and 8.2).

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