The packaging requirements with pressure closure mean that during the package design and manufacturing process, it must be considered that the product needs to withstand a certain pressure during transportation and storage and remain sealed to ensure the
Pressure plugging is a common pipeline maintenance and repair technique that can be used to plug and repair pipelines without interrupting production. Its principle is to plug the pipe or repair the hole in the pipe by inserting a strip expansion bod
1. According to physical and mechanical means, plugging can be divided into hanging type plugging, bucket type plugging, folding type plugging, bag type plugging and other forms 2. Plugging is divided into stop plugging and stop plugging according to whe
