Step 1: Identifying the materials.
The common thermoplastics used in household items include ABS, PVC, Nylon, and HDPE. Each has different mechanical and chemical properties suited for specific applications.
Step 2: Explanation.
PVC (Polyvinyl Chloride) is widely used for manufacturing household buckets due to its good rigidity, durability, affordability, and ease of molding. Although HDPE is also used for many containers, PVC remains the more common and cost-effective material for household buckets in mass production.
Step 3: Conclusion.
Hence, the material commonly used in the manufacture of household plastic buckets is PVC.