1. Plastic Wheels Lightweight and cost-effective, plastic wheels are often used in lighter doors. They are less durable than metal but can work well for internal sliding doors.
Both cast and wrought iron are some of the most durable materials out there. With proper care, iron fences can last for generations.
These differing methods result in materials that, while they’re both iron, have significant differences in cost, strength, hardness, malleability, and chemical composition.