Things to Do Before Burying 3PE Anti-corrosion Steel Pipe

3PE anti-corrosion steel pipe has excellent corrosion resistance, making it frequently used for buried steel pipe. However, 3PE anti-corrosion steel pipe requires some preparation before burial. Before understanding the coating, let's briefly review the advantages of 3PE anti-corrosion steel pipe: it combines the mechanical strength of steel pipe with the corrosion resistance of plastic; the outer wall coating is at least 2.5mm thick, making it scratch- and bump-resistant; the inner wall has a low friction coefficient, reducing energy consumption; the inner wall meets national hygiene standards, making it safe and harmless; and the smooth inner wall resists scaling and exhibits excellent self-cleaning properties.

Before burying the 3PE anti-corrosion steel pipe, the surrounding area must be cleaned. Surveying and setting-out personnel must provide technical briefings to the supervisors and machine operators involved in the cleanup. At least one lineman must participate in the cleanup of the work area. It is also necessary to check that the 3PE anti-corrosion steel pipe, crossing piles, and underground structure markers have been moved to the abandoned soil side, and that all above-ground and underground structures have been fully inventoried and cleared. In general areas, mechanical operations can be performed by using a bulldozer to clear debris from the work area. However, when 3PE anti-corrosion steel pipes need to pass through obstacles such as ditches, ridges, and steep slopes, methods must be devised to accommodate the passage of transportation and construction equipment.

The work area should be as clear and level as possible. If surrounding farmland, fruit trees, or vegetation are present, the area should be minimized. In deserts and saline-alkali land, pipe laying should minimize disruption to surface vegetation and undisturbed soil to prevent and minimize soil erosion. When passing through irrigation and drainage channels, pre-buried culverts and other water-passing systems should be used to ensure that agricultural production is not impeded.

To achieve the optimal benefits of corrosion-resistant steel pipes, coatings must meet the following three requirements:

1. Excellent corrosion resistance: The coating formed by the coating is the core of the corrosion protection of 3PE steel pipes. The coating must be stable when exposed to corrosive media such as acids, alkalis, salts, industrial wastewater, and chemical atmospheres. It must not be corroded, dissolved, or decomposed by these substances, and must not chemically react with the media to prevent the formation of new harmful substances.

2. Excellent impermeability: To effectively prevent the penetration of highly permeable liquids or gases and prevent them from corroding the steel pipe surface, the coating must have excellent impermeability.

3. Good adhesion and flexibility: The steel pipe and coating must be well bonded, preventing them from cracking or even falling off due to vibration or slight deformation. This ensures the corrosion resistance of the steel pipe. Therefore, the coating must have good adhesion and a certain level of mechanical strength.