镀锌钢管的国标厚度及上下公差

1、标准 外径公差 壁厚公差 D<50 ±0.5mm S4mm ±12.5% D50 ±1% 4mm<S20mm +15/-12.5% S>20mm ±12.5% 焊管及镀锌管重量表(按GB/T30912001标准执行)规格 外径mm 壁厚mm 最小壁厚mm 焊管（6米定尺） 镀锌管(6米定尺） 米重kg 根重kg 米重kg 根重kg 公称内径 英寸 DN15 1/2 21.3 2.8 2.45 1.28 7.68 1.357 8.14 DN20 3/4 26.9 2.8 2.45 1.66 9.96 1.76 10.56 DN25 1 3

2、3.7 3.2 2.8 2.41 14.46 2.554 15.32 DN32 1.25 42.4 3.5 3.06 3.36 20.16 3.56 21.36 DN40 1.5 48.3 3.5 3.06 3.87 23.22 4.10 24.60 DN50 2 60.3 3.8 3.325 5.29 31.74 5.607 33.64 DN65 2.5 76.1 4.0 3.5 7.11 42.66 7.536 45.21 DN80 3 88.9 4.0 8.38 50.28 8.88 53.28 DN100 4 114.3 4.0 10.88 65.28 11.53 69.18 DN12

3、5 5 140 4.5 15.04 90.24 15.942 98.65 DN150 6 168.3 4.5 18.18 109.08 19.27 115.62 DN200 8 219.1 6.0（焊管） 31.53 189.18 DN200 8 219.1 6.5（热镀锌） 36.12 216.7更多镀锌管知识请参考:  6回答者： qinghe5211 规格外径mm壁厚mm最小壁厚mm焊管（6米定尺）镀锌管(6米定尺） 米重kg根重kg米重kg根重kg公称内径英寸 DN151/221.32.82.451.287.681.3578.14 DN

4、203/426.92.82.451.669.961.7610.56 DN25133.73.22.82.4114.462.55415.32 DN321.2542.43.53.063.3620.163.5621.36 DN401.548.33.53.063.8723.224.1024.60 DN50260.33.83.3255.2931.745.60733.64 DN652.576.14.03.57.1142.667.53645.21 DN80388.94.0 8.3850.288.8853.28 DN1004114.

5、34.0 10.8865.2811.5369.18 DN12551404.5 15.0490.2415.94298.65 DN1506168.34.5 18.18109.0819.27115.62 DN2008219.1  6.0（焊管）  31.53189.18   DN2008219.1  6.5（热镀锌）   36.12216.72国标镀锌管规格、国标镀锌管现货 天津市兴华钢管物资有限公司  

6、0;                                                 

7、0;                            联系电话#160;  格外径mm壁厚mm最小壁厚mm焊管（6米定尺）镀锌管(6米定尺） 米重kg根重kg米重kg根重kg 公称内径英寸 DN151/221.32.82

8、.451.287.681.3578.14 DN203/426.92.82.451.669.961.7610.56 DN25133.73.22.82.4114.462.55415.32 DN321.2542.43.53.063.3620.163.5621.36 DN401.548.33.53.063.8723.224.1024.60 DN50260.33.83.3255.2931.745.60733.64 DN652.576.14.03.57.1142.667.53645.21 DN80388.94.0 8.3850.288.8853.28 DN1004114.