大口径螺旋钢管承受压力计算公式：
压力=（壁厚*2*钢管材质抗拉强度）/（外径*系数）
大口径螺旋钢管压力系数表示方法： 压力P<7Mpa
以下是常见螺旋钢管承压能力表：http://www.wumeifang.com
称外径 mm
|
壁厚mm |
静水压试验压力 单位：MPa 1MPa约等于10公斤 |
| SY/T5037-2000 |
GB/T9711.1-1997 |
| Q235B |
16Mn |
Q235B |
L360 |
| 219 |
6/7/8 |
7.7/9.0/10.3 |
11.3/13.2/15.1 |
10.9/12.8/14.6 |
14.8/17.3/19.7 |
| 273 |
6/7/8 |
6.2/7.2/8.3 |
9.1/10.6/12.1 |
8.8/10.2/11.7 |
13.5/15.7/17.9 |
| 325 |
6/7/8 |
5.2/6.1/6.9 |
7.6/8.9/10.2 |
7.4/8.6/9.5 |
11.3/13.2/15.1 |
| 377 |
6/7/8/9 |
4.5/5.2/6.0/6.7 |
6.6/7.7/8.8/9.9 |
6.4/7.4/8.5/9.5 |
9.7/11.4/13.0/14.6 |
| 426 |
6/7/8/9/10 |
4.0/4.6/5.3/6.0/6.6 |
5.8/6.8/7.8/8.7/9.7 |
5.6/6.6/7.5/8.4/9.4 |
8.6/10.1/11.5/12.9/14.4 |
| 478 |
6/7/8/9/10 |
3.5/4.1/4.7/5.3/5.9 |
5.2/6.1/6.9/7.8/8.7 |
0.0/5.9/6.7/7.5/8.4 |
7.7/9.0/10.2/11.5/12.8 |
| 529 |
6/7/8/9/10 |
3.2/3.7/4.3/4.8/5.3 |
4.7/5.5/6.3/7.0/7.8 |
0.0/5.3/6.0/6.8/7.6 |
7.3/8.6/9.8/11.0/12.2 |
| 630 |
6/7/8/9/10 |
2.7/3.1/3.6/4.0/4.5 |
3.9/4.6/5.3/5.9/6.6 |
0.0/4.4/5.1/5.7/6.3 |
6.2/7.2/8.2/9.3/10.3 |
| 720 |
6/7/8/9/10 |
2.4/2.7/3.1/3.5/3.9 |
3.5/4.0/4.6/5.2/5.8 |
0.0/3.9/4.4/5.0/5.5 |
5.4/6.3/7.2/8.1/9.0 |
| 820 |
6/7/8/9/10/12 |
2.1/2.4/2.8/3.1/3.4/0.0 |
3.0/3.5/4.0/4.5/5.0/0.0 |
0.0/0.0/3.9/4.4/4.9/0.0 |
4.7/5.5/6.3/7.1/7.9 |
| 920 |
7/8/9/10/11/12 |
2.1/2.5/2.8/3.1/3.4/3.7 |
3.2/3.6/4.1/4.5/5.0/5.4 |
0.0/3.5/3.9/4.3/5.2 |
4.9/5.6/6.3/7.0/7.7/8.5 |
| 1020 |
7/8/9/10/11/12 |
1.9/2.2/2.5/2.8/3.0/3.3 |
2.8/3.2/3.7/4.1/4.5/4.9 |
0.0/3.1/3.5/3.9/4.7 |
3.8/4.4/5.1/5.7/6.4/7.0/7.6 |
| 1220 |
8/9/10/11/12/14 |
1.8/2.1/2.3/2.5/2.8/3.2 |
2.7/3.1/3.4/3.7/4.1/4.8 |
2.6/2.9/3.3/3.9/0.0 |
