... 3.Full models to choose 3PE pipe anti-corrosion equipment with CE confirmedStandard/Materia: API5LGr.B,X42~X80; ASTMA252 Gr.2 ... ,ST52 etc.Usage:1.Piling project2.heat-supply project3.conveying drinking water,drainage,coal gas,fuel gas,mine slurry and other ... , 3. Marks: as per customer's request, 4. Surface treatment: with or without varnish/Epoxy resin/3PE/3PP/FBE/ Epoxy Marine ...