1. The surface of our sand scraping sucker rod well pump plunger is coated with high hardness and wear-resistant alloy (such as nickel-based alloy, tungsten carbide coating), and the inner wall of sand scraping sucker rod well pump is precisely polished to improve the hardness and smooth the surface, further reducing the adhesion and wear of sand particles. 2. The moving parts (plunger and pump barrel) of sand scraping sucker rod well pump are made of highly wear-resistant and corrosion-resistant materials, such as special alloy steel and stainless steel, and the surface of sand scraping sucker rod well pump is treated with high-frequency quenching or chemical plating. 3. In salt water and high H₂S environment, the pump barrel and plunger surface of sand scraping sucker rod well pump are treated with anti-corrosion composite coating, which effectively resists the corrosion of CO₂, H₂S and chloride ions in oil wells.
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