Precast Concrete Lifting Anchors Socket Precast Lifting System Precast Concrete Slab. Made of high quality carbon structural steel, high strength and good toughness. Hot dip galvanized surface treatment, excellent corrosion resistance. Precision forging process, dense and defect-free internal structure. Strong load capacity, meeting heavy duty engineering requirements. High dimensional accuracy, tight fit with concrete. Strict quality inspection, each batch traceable. Non-standard customization supported, produced according to customer drawings. On-time delivery, stable supply. Professional technical team provides selection guidance. Rust preventive oil plus plastic film sealing, effective against moisture and rust.