... waste tyre rubber powder,speed 7m/min,water comeout from pipe wall side,low cost water soak pipe extrusion machinewe studied and developed ... appear un-seen micro hole. when the water pass through the hose, the water seepage from the hole under the gravity .2. ... only part soil wet from water.5. no-damage soil structure, water come from hose wall very slow, soil absorb water itself from the micro hole ...