Sealing pipe joint made of resin

A sealing pipe joint made of resin, wherein:

• the sealing pipe joint made of resin comprises a joint body, an inner ring, and a nut;
• the inner ring comprises a plug head, the joint body comprises a slot portion, the plug head is inserted within the slot portion to form a sealing connection;
• the nut is connected to the join body to maintain a plugged state between the plug head and the slot portion, the nut remains pressing against the inner ring;
• in a free state, a radius thickness of the plug head is linearly changed along an axis of the inner ring, and in the plugged state, the slot portion is elastically deformed and a radius changing rate of the slot portion is less than a radius changing rate of the plug head when the plug head is in the free state;
• in the free state, an inner peripheral surface of the plug head and an axis of the inner ring form an angle θ;
• in the plugged state, the slot portion is deformed, and an outer peripheral surface of the slot portion and the axis of the inner ring form an angle α, the angle θ is greater than the angle α, and 0<θ<15°;
• T2>T1>D, D is a width of the slot portion, T1 is a thickness of a front end of the plug head, and T2 is a thickness of a rear end of the plug head.