PVC hoses are widely used in daily life, so how do you choose good tubing among a wide variety of PVC products? As a professional PVC hose manufacturer, I will teach you 5 strokes to choose a good PVC hose.

1. It is also the easiest way to determine the addition of waste. If the raw materials purchased have a pungent odor, the raw materials may be mixed with foreign marine waste, or the cheap or inferior raw materials are used in the re-production process. The performance of the PVC hose is greatly reduced or even denatured.
2. The burning judgment method. Many manufacturers add calcium powder to PVC hoses to enhance the strength of the hose. In this case, the combustion method can be used to observe the burned powder (conditional muffle furnace can be used), and the high-quality and pure PVC hose does not remain after burning, or there is oil residue, containing calcium carbonate, granular calcium, Hose of additives such as talc will have significant ash residue after burning.

3. Using the instrument, use the melting point meter to measure the melting point to determine if it is doped with excess lubricant. Some unscrupulous PVC hose manufacturers have achieved cost savings by adding a large amount of cheap lubricants. The normal amount of lubricant added does not affect the melting point of PVC hoses (about 150°), but excessive lubricants such as PE wax are added. Can significantly reduce the overall melting point of PVC hoses. The melting point of PE wax is generally 105-110 ° C. Some manufacturers dope with paraffin or hardened oil, and the melting point will drop.
4. The oven method detects impurities. Some raw materials may be doped with other impurities, but the raw materials are difficult to identify. In this case, oven contrast testing is recommended. Observe the color change after setting the oven temperature at 150 ° for a certain period of time. If the raw material first changes color and turns red, the raw material may contain other impurities.
5. Torque rheometer measures the stability of raw materials. The rheometer is widely used. It can be said that the pipe manufacturer has the necessary tools to measure the processability of ACR. It can also measure the stability of various raw materials. If the quality is different, the curve will definitely show, and the stabilizer can be measured. Dynamic stability is good or bad, it can be described as a machine in hand, buying materials without worry.