Variable diameterDN20-50

For valve and pipe (or pipe and pipe) nominal diameter is not consistent (to save money or use existing materials), valve and pipe (or aluminum alloy pipe and dalian compressed air pipe) this kind of pipe fitting commonly known as "size head" by diameter connection to change the pipe diameter.

It is simple and fast to install, no welding is needed, eliminate the internal force of the pipeline, and do not damage the inner and outer protective layer of the pipeline. Maintenance pipeline does not affect production, construction is not affected by the climate, good installation quality, save labor resources, save construction equipment purchase costs, improve efficiency, shorten the time limit, reduce labor costs.