《镀锌焊接钢管及有缝钢塑复合净水管》公差尺寸标准低压流体输送用镀锌焊接钢管GB/T3091-2001CJ/T136-2001 钢塑复合管（PE、PEX）公称口径 D外径普通钢管塑管壁厚mm允许公差 mm内径尺寸（近似）复合管供应方式直管（m）允许长度偏差 mmmmin公称尺寸 mm允许偏差壁厚mm允许公差%151/221.3±0.5mm2.80±12.51.5±0.212.86m203/426.9±0.5mm2.801.518.36m25133.7±0.5mm3.201.524.06m321 1/442.4±0.5mm3.501.532.86m401 1/248.3±1.0%3.501.538.06m+2050260.3±1.0%3.801.550.06m652 1/276.1±1.0%4.001.565.06m80388.9±1.0%4.002.076.56m1004114.3±1.0%4.002.0102.06m1255139.7±1.0%4.002.0128.06m150168.3 ±0.75%4.502.5151.06m200219.1 ±0.75%5.502.5203.06m
