PSP plastic steel composite pipe and lining plastic pipe are not the same kind of pipe?
PSP steel plastic composite pipe: P is PE or PPR and PERT S is referred to as material, steel pipe is referred to as PSP, inside and outside the plastic intermediate steel composite, PSP steel plastic composite pressure pipe, steel wire mesh, and PE coated steel mesh steel plastic pipe, steel plastic pipe,
Lining plastic pipe is also called SP tube, S is also referred to as iron and steel, P is PE abbreviation, that is galvanized pipe lining with a layer of plastic!
