How to identify the quality of PVC steel wire hose?

In most cases, without any testing tools and testing conditions, we can roughly identify the quality of PVC steel wire hoses based on vision, smell, touch and other senses.

1. Observe whether the lumen is regular and the wall thickness is uniform. The inner cavity and outer edge of good-quality PVC steel wire hoses are in a standard circular ring with uniform distribution of hose walls. Take a PVC steel wire hose with an inner diameter of 89mm and a wall thickness of 7mm as an example. The thickest part of the hose wall of poor quality can reach 7.5mm and the thinnest part is only 5.5mm. Working under high pressure is easy to cause uneven force on the hose wall and cause the PVC steel wire hose to burst. Or deformation may affect normal use.

2. Observe whether there are bubbles in the wall of the PVC steel wire hose or whether other visible objects are colorless and transparent. The wall of the high-quality PVC steel wire hose is crystal clear without any impurities. The yellowish color of the defective PVC steel wire hose may be caused by decomposition, aging or long-term improper storage due to improper handling during the production process.

3. The high-quality PVC steel wire hose has no smell of any petrochemical products except a little plastic smell. The inferior steel wire hose has an unpleasant and pungent diesel smell, especially in the hot summer, and people can't get close to it.

4. The inner and outer walls of the high-quality PVC steel wire hose are smooth and feel good, while the low-quality hose is rough.

5. When measuring the wall thickness, the two ends of the PVC steel wire hose should be cut off, and the middle hose should be selected as a sample test to prevent some unscrupulous manufacturers from making a fuss at the two ends of the hose. The actual wall thickness is thinner than the two ends of the hose.

6. Cut a few centimeters of steel wire at both ends of the PVC steel wire hose and fold the steel wire repeatedly to test the strength and toughness of the steel wire. Poor-quality steel wires will break after one or two folds, while high-quality PVC steel wire hoses require special tools to cut them off. The quality of the steel wire determines the quality of the entire hose. The PVC steel wire hose with quality problems caused by the steel wire is prone to irreversible deformation.