Showerhead
Showerheads are typically made of plastic or metal. Plastic showerheads are inexpensive but prone to deformation from hot water and high-pressure flow, and they lack durability. Metal showerheads offer superior strength and durability but come at a higher cost.
Valve Body
Shower valve bodies are generally made of brass, stainless steel, or plastic. Brass bodies offer high strength and reliability but are prone to rusting. Stainless steel bodies are corrosion-resistant and rust-resistant but have lower strength. Plastic bodies are inexpensive but less durable.
Water Pipe
Shower pipes are generally made of plastic, stainless steel, or copper. Plastic pipes are inexpensive but prone to aging. Stainless steel pipes are corrosion-resistant but have lower strength. Copper pipes offer high strength but come at a higher cost.
Housing
Shower housings are generally made of plastic, stainless steel, or aluminum. Plastic housings are inexpensive but prone to aging. Stainless steel housings are corrosion-resistant but more expensive. Aluminum housings are lightweight but have lower strength.