Galvanized steel pipes have lower corrosion resistance compared to plain steel pipes. Galvanizing refers to the process of applying a zinc coating to the surface of steel pipes, which can be either welded or seamless. Seamless refers to the manufacturing process of steel pipes, which can be either welded or seamless. Galvanized pipes offer strong corrosion resistance, while seamless pipes can withstand higher pressure. Due to the protective zinc coating, galvanized pipes are less prone to rust. Galvanized pipes are also lighter than seamless pipes. For use on balconies, it's better to use galvanized smooth pipes. Seamless pipes are not suitable for balconies due to their heavier natural weight. Seamless pipes are more expensive than galvanized pipes. Galvanized pipes are highly durable and have a long service life, far exceeding that of seamless pipes. With good quality, they can last over 20 years. Of course, proper welding and painting are necessary to maintain the lifespan of galvanized pipes. Usage differences: Galvanized pipes are commonly used for fences, railing, guardrails, and balcony railings. They are widely applied in municipal projects, roads, factories, schools, development zones, gardens, squares, residential areas, and more.