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性能特點：
套管式伸縮器也稱伸縮節、膨脹節、補償器。套管式伸縮器在范圍內可軸向伸縮，也能在的角度內克服管道對接不同軸向而產生的偏移，能大的方便閥門管道的安裝與拆卸，在管道允許伸縮量中可以自由伸縮，一旦越過其伸縮量就起到限位的作用，管道的運行。
SSQ-1型套管式伸縮器設計安裝數據表
公稱通徑 | 小長度 | 安裝長度 | 長度 | 伸縮量 |
40 | 130 | 150 | 170 | 40 |
50 | 135 | 155 | 175 | 40 |
65 | 150 | 175 | 200 | 50 |
80 | 170 | 200 | 230 | 60 |
100 | 170 | 205 | 240 | 70 |
125 | 190 | 225 | 260 | 70 |
150 | 210 | 250 | 290 | 80 |
200 | 220 | 260 | 300 | 80 |
250 | 235 | 275 | 315 | 90 |
300 | 235 | 280 | 325 | 90 |
350 | 250 | 295 | 340 | 90 |
400 | 260 | 305 | 350 | 90 |
450 | 260 | 305 | 350 | 90 |
500 | 270 | 315 | 360 | 100 |
600 | 280 | 330 | 380 | 100 |
700 | 300 | 350 | 400 | 100 |
800 | 330 | 380 | 430 | 100 |
900 | 330 | 380 | 430 | 100 |
1000 | 350 | 400 | 430 | 100 |
1200 | 350 | 400 | 450 | 100 |
1400 | 390 | 445 | 450 | 110 |
1600 | 410 | 465 | 500 | 110 |
1800 | 430 | 485 | 520 | 110 |
2000 | 450 | 510 | 540 | 120 |
2200 | 480 | 545 | 570 | 130 |
2400 | 500 | 570 | 610 | 140 |
2600 | 540 | 615 | 640 | 150 |
2800 | 580 | 660 | 690 | 160 |
3000 | 650 | 750 | 740 | 200 |