▎ 摘　　要

NOVELTY - The corrugated pipe has a main corrugated pipe (100). The corrugated pipe is provided with corrugated grooves. The corrugated groove is provided with a collar (300). Fixing seats are installed on the inner wall of the collar. A guide rod is installed on the fixing seat. A spring is installed on the guide rod. A connecting rod is provided at one end of the spring away from the fixing seat. The connecting rod is provided with a guide groove. The guide rod is slidably connected to the guide groove. A piston is installed on the guide rod. The piston is slidably installed in the installation pipe. The installation pipe is installed on the gas collecting pipe. An exhaust pipe is installed on the gas collecting pipe. Two air inlet pipes are installed on the gas collecting pipe. A check valve is provided in the intake pipe. The exhaust pipe passes the arc-shaped limiting groove, and is installed on the annular airbag, which is in contact with the corrugated groove. USE - As combined pressure-resistant double-wall corrugated pipe. ADVANTAGE - The corrugated pipe effectively improves the strength of the corrugated grooves in the corrugated pipe by arranging the lantern ring on each corrugated groove, where the diameter of each lantern ring is larger than the corrugated pipe, the lantern rings firstly provide strength support when being pressed, the corresponding structure can buffer borne pressure when being pressed, and annular airbags can provide corrugations for the positions of the corrugated grooves, and the pressure resistance of the double-wall corrugated pipe is effectively improved. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a combined pressure-resistant double-wall corrugated pipe production process, which involves: (a) weighing 80-100 pts. wt. high-density polyethylene, 12-24 pts. wt. linear low-density polyethylene, 15-25 pts. wt. chlorinated polyethylene, 10-15 pts. wt. modified graphene, 8-15 pts. wt. compatibilizer, 2-4 pts. wt. lubricant, 4-12 pts. wt. flame retardant, 0.6-2 pts. wt. antioxidant, 2-4 pts. wt. coupling agent, 2-6 pts. wt. nano calcium carbonate, 1-3 pts. wt. processing aid, and 4-6 pts. wt. initiator, adding linear low density polyethylene, chlorinated polyethylene, antioxidant, and 1/2 of the total amount of coupling agent to a high-speed mixer, uniformly mixing the raw materials in the high-speed mixer, after plasticization, adding the initiator, uniformly mixing the mixture to obtain a mixture (A), adding high-density polyethylene, modified graphene, compatibilizer, lubricant, flame retardant, antioxidant, 1/2 of the total amount of coupling agent, nano-calcium carbonate, and processing aid in a high-speed mixer, stirring for 35-45 minutes, then adding the mixture (A) and continuously stirring for 10-20 minutes, and fully mixing to obtain a mixture B; and (b) adding the mixture (B) to a twin screw extruder, extruding the profile after melting, when the profile is cooled to 40-90degreesC, and bidirectionally pulling the profile in the winding direction and the advancing direction to obtain the product. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the combined pressure-resistant double-wall corrugated pipe. Main corrugated pipe (100) Collar (300)