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 

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