How much are the water pipe joints converted into mm for 4 points and 6 points?

There are two units of measurement for water pipes, imperial and metric.

1 foot=12 inches 1 inch=8 minutes=25.4mm. 6 points is 3/4*25.4mm=19.05mm, but for convenience, the British 6-point water pipe is called 20 mm. This is just the inner diameter. If you want to calculate the total diameter of the water pipe, you need to add two wall thicknesses.

For example, a 4-point hot water pipe has a wall thickness of 3.4mm, the inner diameter is 12.7mm, and the total diameter is 12.7 2*3.4=19.5mm≈20mm

So 4-point pipe: 20mm , 6-point pipe: 25mm

The joint is a component used to connect water pipes. Water pipe joints can be divided into: external thread end-connection water pipe joints, ferrule type water pipe joints, and self-retaining water pipe joints according to their usage.

Externally threaded end-connection water pipe joints are die-cast with zinc alloy materials, and the surface is galvanized, frosted, or chrome-plated; the structure is tight, no pores, and high strength.

Extended information:

Application:

Cut-type water pipe joints can connect unthreaded steel pipes and hoses, eliminating the threading process and only need to Just screw in the screws; the structure is compact and the strength is high.

Self-fastening water pipe joints can connect unthreaded steel pipes or unthreaded equipment outlets to hoses, eliminating the threading process; they are made of zinc alloy die-casting, and the surface of the surface of the surface of the water pipe joints is plated Zinc, frosted, or chrome plated; compact structure and high strength. Widely used in high-end buildings, hotels, hospitals, buildings, gymnasiums, museums, government agencies, villas, and residential areas.

Water pipe joint--Baidu Encyclopedia