Specification, model and size table of water pipes

The specifications, models and dimensions of water pipes are shown in the following figure.

Generally speaking, the measuring unit of four branches is inches, so four branches are 1/2 inches (4/8 = 1/2) and one inch is = =25.4mm, so the inner diameter of four branches is 25.4/2 = 12.7 mm, which is also commonly known as DN 6550.

The specifications of domestic water pipes are: DN 15(4 branches), DN20(6 branches), DN65( 1 inch pipe), DN32( 1 inch 2 pipe), DN40( 1 inch half pipe), DN50 (.

Water pipe measurement index

1. Hygienic performance: high-quality water pipe materials will not cause water pollution, and there will be no problems such as "red water, blue water and hidden water", which meets the requirements of people's "health first".

2. Product life: Product life is the key to economic benefits. If the service life of water pipes and pipe fittings is different from that of buildings, it will bring consumers losses that exceed the first investment of water pipes 10 times, and may also cause family property losses and increase maintenance costs.

3. Material strength: More than 60% of water pipes leak due to external force. Such as: being hit by external force, nails entering, etc. Therefore, material strength is the key index of high-quality water pipe materials and plays an important role in the safe use of water pipe materials.