... are: (1) PFA transparent tube, PFA insulation tube ,PFA heat shrink tube , PFAcoil pipe , PFA corrugated / bellows tube, PFA sheet , PFA film , PFA welding rod. (2 ... , FEP coil tube, FEP corrugated / bellows tube, FEP film, FEP rods. (3) PTFE/F4 tube. At the ... manufacturing equipment2. Heat exchange equipment ,steam tubing.3. High pure reagent pipe4. All kinds of causticity medium (rigor impregnant) ...