Company News

The working principle of Longchangjie rolling bearings is to replace sliding friction with rolling friction, thereby reducing friction losses, improving efficiency and extending service life. It is a kind of precise mechanical component.

The painting process of Longchangjie Machinery's pre-polyurethane insulation pipes may vary depending on the specific product and production requirements. The painting process of pre-polyurethane insulation pipes mainly includes the following steps:

The PE pipes (polyethylene pipes) produced and manufactured by Longchangjie feature corrosion resistance, anti-aging and environmental friendliness, and can be widely applied in various fields.

As a widely used pipe material, PPR pipes need to follow certain steps and pay attention to relevant matters during installation to ensure their performance and service life.