螺旋钢管承受压力表【大全】（第十七讲）
发布时间：2019-08-13 17:33:57来源：螺旋钢管
我想问这个问题的应该是一个对技术比较关心的设计师。其实计算螺旋钢管承压能力是有相关计算公式的，不管是设计师，还是施工单位，或者业主，关心应该的是安全问题，其次才是价格。那么设计的安全性肯定是设计师来考虑。
已知螺旋钢管壁厚、材质、直径、使用场景，那么该怎么计算螺旋钢管承压压力呢?
螺旋钢管承受压力计算公式如下：
压力=(壁厚*2*钢管材质抗拉强度)/(外径*系数)
螺旋管钢管压力系数表示方法：
压力P<7Mpa 系数S=8 7<钢管压力P<17.5 系数S=6 压力P>17.5 系数S=4
| 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材质 | 16Mn材质 | Q235B材质 | L360材质 | ||
| 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 | |