Aluminum plastic pipe specifications, which aluminum plastic pipe joints are connected

What are the specifications of aluminum-plastic pipe?

Commonly available specifications are aluminum plastic pipe 1520, aluminum plastic pipe 1620, aluminum plastic pipe 2025, 1216 and so on. Inner diameter + outer diameter, such as 1620, indicates that the inner diameter of the tube is 16 mm and the outer diameter is 20 mm.

Aluminum plastic pipe hot water pipe specifications have 20, 25, 32, 40, 50, 63, 75, 90, 110, 160 (unit: mm) ten specifications, the general home is equipped with 20, 25, 32 three specifications enough.

Aluminum plastic pipe hot water pipe specifications are: DN15 (4 points), DN20 (6 points), DN25 (1 inch tube), DN32 (1 inch 2 tubes), DN40 (1 inch half tube), DN50 (2 inch tube) , DN65 (2 inch half pipe), DN80 (3 inch pipe), DN100 (4 inch pipe), DN125 (5 inch pipe), DN150 (6 inch pipe), DN200 (8 inch pipe), DN250 (10 inch pipe) Wait.

How to connect aluminum-plastic pipe joints

The aluminum-plastic pipe can be in the form of a rubber ring interface, a bonding interface, a flange connection, and the like. The rubber ring interface is suitable for the connection of pipe with diameter D63-D315mm; the bonding interface is only suitable for the connection of pipes with outer diameter of pipe less than 160mm; the flange connection is generally used for valve parts of other materials such as hard PVC pipe and cast iron pipe. connection. The high density polyethylene plastic pipe can be connected by hot melt. When the polyethylene pipe is connected with the metal pipe, it is connected by a steel-plastic transition joint.

When the rubber ring is connected, the inner diameter of the rubber ring should be 0.85-0.9 times of the outer diameter of the socket end, and the compression ratio of the rubber ring section diameter is generally 40%. Before installation, the groove of the rubber ring in the socket should be cleaned, the working surface of the socket end and the rubber ring should be free of dirt or other debris.

Install the rubber ring correctly in the groove of the rubber ring of the socket. Do not install it or twist it. For the convenience of installation, wet the rubber ring first, but do not apply lubricant on the rubber ring to prevent the rubber ring at the interface. pop up.

High-density polyethylene plastic connections for hot-melt connections are available in detachable and non-removable connections. The detachable connector has a flanged interface, an exposed connector and a socketed flexible connector. The non-removable interface has a socket type electric hot melt interface and a docking type electric hot melt interface. The wall of the polyethylene pipe is smooth, it is not suitable to adopt the bonding interface, and the threaded connection interface should not be directly threaded on the pipe wall.

Editor in charge: Wang Zhen