Observe whether the wall thickness is uniform. A good quality PVC steel wire hose is a standard round shape. Take the PVC steel wire hose with an inner diameter of 89mm and a wall thickness of 7mm as an example. The wall thickness of the poor quality PVC steel wire hose can reach 7.5mm,and the thinnest part is only 5.5mm.When working under high pressure, it is easy to cause the PVC steel wire hose to burst or deform due to uneven force on the wall, which affects normal use.
Observe whether there are bubbles or other visible objects on the wall of the PVC steel wire hose,whether it is colorless and transparent, The high-quality PVC steel wire hose is crystal clear without any impurities. The color of the defective PVC steel wire hose is yellow.
High-quality PVC steel wire hose except for a little plastic smell no smell of other petrochemical products. The low-quality steel hose have an unpleasant, pungent diesel smell, especially in the hot summer, people can’t get close.
The inner and outer walls of high-quality PVC steel wire hose are smooth, with good hand feeling, while low-quality pipes are rough.
When measuring wall thickness, both ends of the wire reinforced pvc hose should be cut off and the middle pipe should be selected as the sample test, Because the wire reinforced hose produced by some illegal manufacturers are thin in the middle and thick at the ends.
Cut a few 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. Low-quality steel wires will break after one or two folds, while high-quality PVC steel wires require special tools to cut off. The quality of the steel wire determines the quality of the entire hose. When the quality of the steel wire is not good, it is prone to irreversible deformation.