3PE Anti-corrosion Elbow Outer PE Inner EP Anti-corrosion Spiral Pipe Fittings Epoxy Coal Asphalt Resin Inner Plastic Elbow
Three-oil and two-cloth epoxy coal asphalt anti-corrosion bend is a kind of anti-corrosion pipeline using epoxy coal asphalt coating and glass fiber cloth composite structure, mainly used in buried or underwater and other corrosive environments. Its structure is usually three layers of paint (primer + top coat) and two layers of fiberglass cloth to form a reinforced grade anti-corrosion coating Structure and materials Anti-corrosion layer composition: primer: iron red epoxy resin base, containing anti-rust pigment and toughening agent, thickness about 0.1-0.2mm Top coat: black coal asphalt base, add insulating filler and leveling agent, and cross-coat with glass fiber cloth to form a reinforcing structure Fiberglass cloth: Two layers of fiberglass cloth are embedded in the coating to improve the mechanical strength and impact resistance of the coating, preventing external forces from causing the coating to crack Process characteristics: Sandblasting is used to remove rust to Sa2.5 level cleanliness to ensure that there is no oil stains and rust spots on the surface of the steel pipe. After mechanical spraying of the primer, the fiberglass cloth is wrapped around and the topcoat is applied to form a thick coating of 0.5-1.0mm. It takes more than 8 hours to cure naturally, and it is dried at room temperature 14 Properties and applications Anti-corrosion properties: resistance to acid and alkali, salt and microbial erosion, volume resistivity ≥ 1×10¹²Ω·m Mechanical strength: impact strength ≥ 4J, adhesion up to level 1 standard (grid test). Applicable scenarios: protection of the outer wall of buried oil/gas pipelines. Marine engineering steel piles, ship ballast tank anti-corrosion. Anti-corrosion of chemical equipment, gas storage tanks and sewage treatment facilities The product implements the SY/T 0447-96 industry standard, meets the 20-year anti-corrosion requirements of buried pipelines, and has the advantages of low cost and convenient construction compared with other anti-corrosion materials.
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