What kind of material are the flanges and valves on the GRP pipe?
Construction: glass fiber reinforced plastic can be threaded joints, easy to install, better quality, PVC generally glue adhesive, due to temperature problems, quality is difficult to ensure;
The flange on the GRP pipe is fiberglass, and the flanges and pipes are one. The valve is welded with carbon steel
It's better to use plastic or polyurethane
