BS ISO 11922-2:1997

Defines tolerance grades for outside diameter, out-of-roundness and wall thickness of inch-based thermoplastics pipes for conveying fluids and manufactured with nominal outside diameters and nominal pressures according with ISO 161-2. Applies to smooth thermoplastics pipes having constant circular cross-section along the whole length of the pipe, regardless of manufacturing method, pipe material or the intended application.

This part of ISO11922 specifies tolerance grades for the outside diameter, out-of-roundness and wall thickness of inch-based thermoplastics pipes for the conveyance of fluids and manufactured with nominal outside diameters and nominal pressures in accordance with ISO161-21^[1](see annexA).

It is applicable to smooth thermoplastics pipes of constant circular cross-section along the whole length of the pipe, whatever the method of manufacture, the pipe material or the intended application.

NOTE— It is intended that the tolerance grades specified in product standards be selected from this part of ISO11922, taking into account the material and the intended application.