Standard Data
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3-LAYER COATED PIPE PROCESS
1. Visual Inpection
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2. Preheating : above the dew pont
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3. Shot & Grit blasting
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4. Cleanliness Grade(SA2 1/2")
check with pictorial book after
blasting
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5. Electrostatic epoxy powder spry coating
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6. Adhesive & P.E coating by
T-Die extrusion
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7. Water quenching
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8. On-line coating thickness check
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9. On-line pinhole test (25,000 V)
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10. Marking & Packing
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11. Cut back
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12. Storage
