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A Guide to Weld on Hinges

Weld-on Hinges| The Complete FAQ Guide

Hinges have been used for a long time to create movable spaces between doors and frames. You can see different types of hinges at many places. 

welding hinges

Weld-on hinges have been used for joining two metal parts. They are very useful for metal doors, cabinets and electronic doors. 

1. What Is A Bullet Hinge?

A bullet hinge is a particular kind of hinge that takes small space and does look like a bullet. It is generally made out of three parts. One part is called the male part, another is the female part and the third part is a bushing that balances these two parts.

Bullet On Weld on hinges

Bullet hinges are particularly used for metal frames, cabinets, and metal doors. For beautification purposes, they have been in use for a long time. You can find their existence where beautification is equally important to the effectiveness of hinges.

2. What Are Weld-On Hinges?

Weld-on hinges are a general categorization of hinges. You will find that most of the hinges are welded on hinges except the hinges you use on wooden frames. 

The hinges need to be welded on metal frames like metal doors, metal cabinets, all are actually weld on hinges. The mounting of a weld on the hinge takes welding on the metal part. That is why it is called a weld-on hinge. Bullet hinges, Butt hinges, Lift-off hinges, all are examples of weld-on hinges.

3. What Are The Materials Of Weld On Hinges?

Weld-on hinges can be made out of different materials. There are vast options to create weld-on hinges according to the space and surface you have. 

the different types of weld on hinges

But because of corrosion and material cost-efficiency, you can find that most of the weld on hinges are made out of:

Among all materials, stainless steel weld on hinges is the most popular one. They are very easy to design and good for welding. Aluminum and Steel weld on hinges are also very good to work with.

4. What’s The Main Application Of The Welding Hinges?

Most of the hinges you have seen already have weld on hinges. They are particularly used on metal frames, metal doors, and anywhere metal surfaces are used and you need a hinge on it.

Some of its applications are as follows:

  • You can find the bullet hinges on most metal doors. They need less space and are less visible while you work with them. From 20mm metal cabinet doors to heavy-duty metal frame doors for households, you can find hinge welding.
  • Electrical doors for cabinets, mechanical doors for cabinets, all over, you will find metal frames and metal sheets. That is why you have to weld the hinges on them.
  • Laboratory cabinets, especially those metal lab cabinets where you always need to keep clean and need durability for the hinges, you need to weld the hinges with the frames.
  • Weld-on hinges, especially bullet hinges, are often used for interior decoration purposes, where you need to hide the existence of hinges as much as possible. So, home and kitchen cabinets often use this kind of hinge.

    5. What Are Weld On Bullet Hinges?

Weld on bullet hinges are basically the bullet hinges with welding. Bullet hinges do look like bullets. The color may vary depending on the material.

The metal bullet hinges must be welded on the metal frames and doors. The metal frames and doors can be household doors, cabinet doors, lab cabinet doors, etc.

A bullet hinge takes minimum space to move and install. That is why it is one of the most popular types of weld on hinges.

6. Can Hinges Be Welded?

There are different ways to mount or install hinges depending on the working surface and the hinge’s type.

Weld on hinges need to be always welded. They are used on metal surfaces.

Many hinges like butt hinges, ball bearing hinges can be mounted with screws.

But hinges like bullet hinges should be welded on two parts of metals like the frame and the metal door.

They are often used for metal door installation, metal cabinet installation, etc. purposes.

7. How To Use/Install Weld-On Hinges?

You can weld hinges on metal surfaces. Using the following steps you can easily install a bullet hinge with welding.

welding the hinges

  • Step – 1: At first identify the parts of the bullet hinge. A bullet hinge consists of three parts – a pin or male part, a female or part with a hole, and a bushing for balancing the male and female part.
  • Step – 2: Horizontally put the joining workpieces on the working table or the flat surface.
  • Step – 3: Now you need to align the male part of the bullet hinge vertically straight with the door and the metal frame. For your reference, the male part goes up and the female part goes down. You can use a scale, a rod, and two clips for finding the vertically straight position for the hinge.
  • Step – 4: Now if you are satisfied with the vertical alignment and the gap between the hinge and the metal door and frame, then tack weld at both sides. Usually, four points are welded. Both sides of the upper point, and both sides of the lower point.
  • Step – 5: At this point, you can remove the tool you have used for aligning the male post part of the hinge and fully weld head to toe of the hinge at both sides.
  • Step – 6: Adjust the bushing and put the female part.
  • Step – 7: Repeat step – 5 for the female part.

In this way, you can install a weld on hinge. 

8. How Do You Fit A Bullet Hinge?

You can fit a bullet hinge between two metal parts by aligning them on a plain surface. 

First, put the male part vertically straight in between the two workpieces with a tool. Then when the gap and the straightness are aligned, then tack weld the upper portion and the lower portion.

After that, remove the tool and fully weld head to toe of the male part with the frame and the door.

Put the bushing and the female part.

Then weld the female part head to toe at both sides for the frame and the door.


Weld-on hinges are very popular to work with different types of metal frames. They come in different shapes, colors, and materials from time to time. Nowadays, bullet weld on hinges are popular for interior and efficiency purposes.

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