公称直径mm | 最小平均内径 | 最小内层壁厚 | 最小压层厚度 | 最大螺距 | 最小钢带厚度 | 最小防腐层厚度 |
300 | 294 | 2.5 | 4.0 | 55 | 0.4 | 2.5 |
400 | 392 | 3.0 | 4.5 | 65 | 0.4 | 2.5 |
500 | 490 | 3.0 | 5.0 | 75 | 0.5 | 3.0 |
600 | 588 | 3.0 | 5.5 | 110 | 0.5 | 3.0 |
700 | 673 | 3.0 | 5.5 | 110 | 0.5 | 3.5 |
800 | 785 | 3.0 | 6.5 | 125 | 0.7 | 3.5 |
900 | 885 | 3.0 | 6.5 | 145 | 0.7 | 3.5 |
1000 | 985 | 3.0 | 7.0 | 150 | 0.7 | 3.5 |
1100 | 1085 | 3.0 | 7.0 | 175 | 0.7 | 3.5 |
1200 | 1185 | 4.0 | 7.0 | 180 | 0.7 | 3.5 |
1300 | 1285 | 4.0 | 7.0 | 190 | 1.0 | 4.0 |
1400 | 1385 | 4.0 | 7.0 | 200 | 1.0 | 4.0 |
1500 | 1485 | 4.5 | 7.0 | 210 | 1.0 | 4.0 |
1600 | 1585 | 4.5 | 7.0 | 210 | 1.0 | 4.0 |
1800 | 1785 | 4.5 | 7.0 | 210 | 1.0 | 4.0 |
2000 | 1985 | 5.0 | 8.0 | 220 | 1.0 | 4.0 |
2200 | 2185 | 5.5 | 8.0 | 220 | 1.0 | 4.0 |
2400 | 2385 | 6.0 | 8.0 | 220 | 1.0 | 4.0 |