Upgrade your doors and gates with these 4 piece Weldable Barrel Hinges. Measuring 3 in. x 3/4 in., they are made of thick Carbon Steel Q235B, providing a high load-capacity of up to 700 lbs. These heavy-duty hinges ensure long-term stability for both light and heavy doors. The weldable detachable design allows for 360˚ rotation with low friction, resulting in smoother and quieter operation. They are incredibly easy to use; simply weld the ball-bearing detachable hinge pins to the outer frame or the door and insert them into the welded hinge pin. Suitable for a wide range of applications, including swing gates, trailer gates, glass doors, and iron doors, these hinges are perfect for both indoor and outdoor use. Whether you're a DIY enthusiast or a professional installer, the complete package of 4 hinges offers the flexibility and convenience you need for your projects.