Water pipes are concealed engineering materials, and generally we can’t see them after decoration. Therefore, the quality of water pipes directly affects future use. Once a burst occurs, the consequences are unimaginable. The commonly used water pipe material is PPR pipe, which is non-toxic, pressure-resistant and corrosion-resistant. The service life of a good PPR water pipe can be more than 50 years, while a poor quality water pipe is only 1-5 years.
1. The wall thickness of a good tube is generally about 4.2mm, while a bad tube may be thinner than 4mm.
2. Good pipes have no pungent smell during welding, while bad pipes will have.
3. The good tube is white and opaque, and the bad tube is slightly transparent; the good tube is neatly cut at both ends without burrs, and the wall thickness of the tube is uniform, while the bad tube is rough.
4. Good pipes are flexible and won’t break when stepped on hard, and bad pipes will break when stepped on.
electric wire
The installation of electric wires is as concealed as water pipes. Electricity and water are related to life and health. Therefore, the electric wires should be selected, not only to make life practical and convenient, but also for the safety of the family.
Identification method
1. Take a wire and bend it repeatedly. If the hand feels soft, the plastic or rubber feels elastic, and the wire insulator has no cracks, it is a genuine product.
2. Looking at the cross section of the copper core of the wire, the high-quality copper in the real wire is bright and soft in color, while the yellowish white is inferior copper.
3. The outer plastic skin of a good wire should be bright in color and sago texture. The characters on the wire body are stamped with steel, and it feels bumpy to the touch.
glue
Glue is an important auxiliary material in home decoration, and is generally used by woodworkers to glue and make furniture. White glue and universal glue are used most in glue. Good glue can make the furniture made more firm and beautiful, and also ensure environmental protection.
Identification method
1. You can take a little white glue and apply it to the palm of your hand. When it is dry and transparent, it will be real, otherwise it will be fake.
2. Smell the taste, good glue has a little sour taste at most, but it is definitely not pungent. If it tastes pungent, it must be fake.
3. Observe the outer packaging, the color of the barrel body printing, the natural color of the barrel body, and the logo are quite different from the genuine product. Due to cost and craftsmanship considerations for counterfeit products, the details such as welding and printing on the barrel body are absolutely impossible to achieve the exquisite degree of authenticity.
