Polyethylene Tape & Synthetic Primer for oil gas water steel pipe surface corrosion resistance and anti corrosion coating 1. INTRODUCTION TO ... industry, city gas, oil and gas storage and transportation, power, water supply, metallurgy, civil aviation, etc. 1.1 Inner tape: ... fills of joints / weld bead & have capability to smooth the surface of the pipe. N99: Solid content.P-00 Primer, Paint Primer, ...