PE & PA COATING PROCESS
1. Warehousing inspection shall be conducted by Quality assurance team. 2. Surface preparation 1) Prior to coating, the surface of prefabricated pipes shall be shot blast cleaned to remove mill scale, rust and other foreign substances. 2) After blast cleaning, all lose abrasive and dust shall be removed from the surface by brushing or air blowing. 3. Heating 1) Furnace heating The heating temperature depends on the wall thickness of the pipe. 2) The heating temperature lays between 250degree ~ 480 degree. 4. PE/PA coating 5. Cooling The coated pipes are hung up for air-cooling. 6. Inspection and Test The inspection and tests for the coated pipe shall be carried out as follows. 1) Flat test 2) Pin hole test 3) Impact test 4)Bending test 5) Adhesive test 7. Painting 8. Packing Homepage : www.samkunok.com