Decorate will see

1. What does the spray code on the water pipe generally contain?

The surface of the PPR pipe usually has a series of code, composed of words and numbers. The code on the water pipe generally contains brand information, product specifications, industry standards, operation specifications, production date and other content.

2, spray code can erase, this is a normal phenomenon?

In order not to damage the surface of the pipe, generally we see the printing on the PPR pipe, is the use of environmental ink inkjet technology. The injet code is only attached to the surface of the pipe, and will not penetrate or produce chemical reaction with the raw material of the pipe. Due to the smooth characteristics of the surface of the pipe, the relevant content printed by the way of ink inkjet will fade or disappear with the continuous friction for a long time, which is a normal phenomenon and does not have any impact on the quality of the product itself.

3, the water pipe section produces white edge, is there a problem with the material?

PPR material commonly known as random copolymer polypropylene, is a polymer. The white edge after cutting is a special property of plastic polymer. It refers to the polymer under the action of tensile stress, the stress concentration in some weak places of the material produces local plastic deformation, which is called "silver streak phenomenon". After heating, the silver streak will disappear.

4. Is pure copper used in water pipe fittings?

Metal, usually brass, used to make fittings for water pipes. Brass is an alloy composed of copper and zinc. Brass has strong wear resistance and hardness, and its physical properties have been proved to be suitable for the manufacture of valves, water pipes, air conditioning and internal and external machine connecting pipes and radiators.

Pure copper is not suitable for making pipe fittings because of its relatively soft texture. Its good conductivity and ductility make it suitable for making wire and other materials. In appearance, brass tends to be yellow, while pure copper tends to be red and purple.

5, the thicker the wall of the water pipe, the better the compressive resistance?

The pressure resistance of the water pipe is indeed closely related to the thickness of the pipe wall. If the same material or similar material is used, the thicker the wall thickness, the stronger the pressure resistance will be.

The SDR coefficient of the pipe, which means the ratio of standard size, is the ratio between the nominal outside diameter of the pipe and the nominal wall thickness, and is an important parameter determining the ability of the pipe to withstand internal pressure.

It is recommended to use SDR6 level pipes during decoration, that is, the wall thickness of 6 pipes is 4.2mm standard, and the wall thickness of 4 pipes is 3.4mm standard. However, the compression resistance of different pipeline products cannot be judged only by the wall thickness, and the characteristics of the raw materials themselves should be considered.

6. How to choose the water pipe specification?

The selection of indoor pipe specifications mainly depends on the specifications of the inlet pipe. Domestic household water pipe is generally 25mm specifications, that is, commonly known as the 6 branch pipe. In principle, the specifications of the water pipe received from the household should be less than or equal to the specifications of the water pipe into the household. According to the usage habits of different areas and the size of the household type and the number of the water outlet, the decoration of most houses choose 25mm 6 pipe and 20mm 4 pipe, which can meet the use needs.

7. What are the meanings of different industry standards?

Every country and region will use some standards to regulate the development of related industries. In the PPR pipeline industry, we usually have standards such as EN/DIN/GB. EN stands for European Union standard, DIN stands for German standard, and GB stands for Chinese national standard.