Fd-g250/450md/hdpe gas water pipe product line can produce the plastic gas and water pipe. The diameter are from 50mm to 450mm. L). Extruder: special and high-efficient screw for md\hdpe, obliged cooling and flute for cylinder at feeding. 2). Basket compounding die: low temperature melt output, decrease stress and distortion. 3). Vacuum device: two sets high speed vacuumdevice. It is auto control for the temperature and high ofweater. 4). Tow device: the towing speed and extruder are linkage by plc. 5). Cutting device: cutting type are in saw or planet. The noises is low and the workshop is sanitation because configure suction device. 12000kg