1. Welding Joints

2. Lap Joint Lap joint and also arc weld. Lap joint using mig welding
Lap welding using oxygen acetylene

3. T- Joint T joint Oxygen acetylene. T joint using arc welding
T joint using mig welding

4. Butt joint Butt welding using arc and flat welding
Butt welding using mig welding
Butt welding using oxygen acetylene

5. Conclusion
Arc welding is capable of welding the thickest kinds of metal such as cold rolled steel. Oxygen and acetylene is used for thinner metals. Mig welding is used for anything in between.