管夹安装的推荐距离
管子外径（mm）       管夹距离（mm）
6-14                        0.9
15-22                      1.2
23-28                      1.5
30-38                      2
40-48.3                   2.5
50-57                      3
60.3-70                   3.4
73-88.9                   3.7
90-108                    4
114.3-133               4.3
140-165.1               5
168.3-220               5.5