镀锌钢管道及其连接方式

镀锌钢管详细参数公称内径外径mm壁厚mm允许偏差DN2533.73.2≥2.8mmDN3242.43.5≥3.06mmDN4048.33.5≥3.06mmDN5060.33.8≥3.325mmDN65