Material: natural rubber use: apply to harbor, rivers and lakes used for dredging mud dredger supporting hose pipe connections. Manufacturers (Origin): Ward Hengshui Rubber Products Co., Ltd. Dredging Hose (large diameter exhaust suction hose) dredger row (absorption) of sediment with a working pressure of 0.4-0.5Mpa. According to the design needs to be with a flange joint. Name nominal inner diameter of the layer thickness t2 (reference value) flange diameter D1 of the outer diameter of the flange joint thread t1 thickness t (reference value) Number of screw diameter center circle diameter 200 205 ± 3 10 335 12 ± 2 6 280 ± 1.0 8 23 ± 1 250 254 ± 3 390 345 ± 1.0 12 300 305 ± 5 440 390 ± 1.0 350 338 ± 5 500 19 ± 2 435 ± 1.0 400 388 ± 5 565 495 ± 1.0 16 510 510 ± 5 15 670 9 650 ± 1.0 560 560 ± 5 670 690 ± 1.0 18 610 610 ± 5 20 780 22 ± 2 750 ± 1.0 20 630 630 ± 5 780 765 ± 1.0 25 ± 1 660 660 ± 5 780 780 ± 1.0 24 700 700 ± 5 895 25 ± 2 840 ± 1.0 27 ± 1 710 710 ± 5 895 28 ± 2 860 ± 1.0 760 760 ± 5 895 900 ± 1.0 30 ± 1 800 800 ± 5 25 1010 32 ± 2 12 970 ± 1.0 32 30 ± 1 840 840 ± 5 1010 1010 ± 1.0 860 860 ± 5 1010 1010 ± 1.0