Knowledge of Polyurethane Insulation Pipe Manufacturers: How to Identify the Quality of Polyurethane Insulation Pipe
With the increasing popularity of polyurethane insulating tubes, many fake and inferior polyurethane insulating tubes begin to flow to the market. In order to prevent the purchase of fake and inferior polyurethane insulating tubes, Xiaobian tomorrow's feeding cloth introduces how to identify the quality of polyurethane insulating tubes.
The surface of fake and inferior polyurethane insulating pipes often has the appearance of hemp. The rough surface of polyurethane insulating pipe is caused by the serious wear of rolling groove. Because fake and inferior polyurethane insulation pipe manufacturers want to pursue profits, rolling grooves often exceed the standard.
The appearance of fake and inferior polyurethane insulation pipes is prone to cracks, because its billet is adobe, Adobe has many holes, Adobe in the cooling process due to the role of thermal stress, cracks occur, after rolling cracks.
The fake and inferior polyurethane insulating pipes have thin and low transverse ribs, which often present a situation of unsatisfactory filling. The reason is that the manufacturer wants to reach a large negative tolerance, the reduction amount of the first several passes of the finished product is too large, the iron shape is too small, and the pass is not satisfied.
The composition of polyurethane insulation pipe is average, the tonnage of cold shearing machine is high, and the end face of the cutting head is smooth and uniform, while the fake and inferior materials, due to poor material quality, often have the phenomenon of meat loss on the end face of the cutting head, that is, uneven, and no metallic luster. And because the products of fake and inferior wood manufacturers cut little, the head and tail will show big ears.
In summary, all the above-mentioned Shandong Hipper Pipe Technology Development Co., Ltd. provides, want to know the knowledge of polyurethane insulation pipe manufacturers, welcome to pay attention to our website: https://www.sdhpgy.com Thank you for your support!
