流体输送用热塑性塑料管材 尺寸和偏差 第1部分:公制系列

[中文适用范围]： 本文件规定了用于输送流体的公制热塑性塑料管道的外径、不圆度和壁厚的公差等级，其公称外径和公称压力符合 ISO 161-1，公称壁厚符合 ISO 161-1 标准。 ISO 4065。 它适用于沿管道整个长度具有恒定圆形横截面的光滑热塑性塑料管道，无论制造方法、管道材料或预期应用如何。 注：产品标准中规定的公差等级是根据材料和预期应用从本文件中选择的。 [外文原描述]： ISO 11922-1:2018 specifies tolerance grades for the outside diameter, out-of-roundness and wall thickness of metric thermoplastics pipes for the conveyance of fluids and manufactured with nominal outside diameters and nominal pressures in accordance with ISO 161‑1 and nominal wall thicknesses in accordance with ISO 4065. ISO 11922-1:2018 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 are selected from this document taking into account the material and the intended application.