The double-claming tube makes full use of the effective rigidity of the metal material itself.At the joint of the tube and the fittings,boty ends are clamped with calipers to achieve surface fixing,compression into two hexagons,and comprehensive anti-lock,which greatly improves its anti pul-out ability and rotation ability.The advanced O-ring is adopted to exert its long-term elasticity and achieve permanent sealing.At the same time,easy installation,high connection strength,and quiet a anti-vibration and anti-external force are ensured.