How to distinguish between the pros and cons of Sprial Hose
High-quality qualified Spiral Hose Guard hardness is generally 85-90 degrees, if its hardness is less than 85 degrees or above 90 degrees are not met. Hardness is too low to play the role of protection and bondage of internal products, hardness is too high, in low temperature environment, easy to make the protective sleeve rupture.
High-quality Spiral Hose Guard surface is smooth flat, no shortage of material, cracks, burrs, no obvious foaming and uneven, no impurities, noise and other phenomena;
3. Oil resistance
High-quality Spiral Hose Guard have good oil resistance. The spiral protective sleeve can be soaked in a mixture of 70 s gasoline and 10% toluene for 5 minutes, during which time there is no discoloration, stickiness, is high quality qualified;
4. Resistance to high and low temperatures
High-quality qualified Spiral Hose Guard have good resistance to high and low temperatures. How to detect the high and low temperature performance of the protective case bought? The identification method is as follows: the spiral protective sleeve is placed in turn in the environment of 80 degrees C 05 to 1 hour, room temperature environment 0.5 hours, -40 degrees C environment 0.5 to 1 hour, room temperature environment 0.5 hours, 4 consecutive cycles. Then observed that if the spiral protective sleeve did not appear cracking, sticky, depression and other phenomena, it is high-quality, qualified products, on the contrary, if the spiral protective sleeve has cracking, deformation, stickiness or depression and other phenomena, the protective sleeve is inferior.
5. Wear resistance
High-quality qualified Spiral Hose Guard with good wear resistance.
6. Uv resistance
The Spiral Hose Guard has good UV resistance. The black spiral protective sleeve is added to production with a certain column of carbon black to enhance its UV resistance.