How to check the quality of butt welding elbow from appearance?

When many users purchase butt-welding elbows, because they do not have professional testing equipment, they can only check the quality of butt-welding elbows from the appearance at this time. The following are several common judgment methods.

1. From the surface of the butt welding elbow, it can be seen whether the manufacturing process is exquisite. Generally speaking, a good butt welding elbow company will definitely be careful in production, and there will be no friction defects. The cross-sectional shape of the fake and inferior butt welding elbow is uneven. The reason is that in order to save materials, the reduction of the first two passes of the finished roll is too large. standard. The composition of high-quality steel is uniform, the tonnage of the cold shear is high, and the end face of the cutting head is smooth and neat. However, due to the poor material quality of fake and inferior materials, the end face of the cutting head often has the phenomenon of meat loss, that is, unevenness and no metallic luster. Moreover, because the products of fake and inferior material manufacturers have fewer heads, big ears will appear at the head and tail.

2. Appearance inspection of welded joints of butt-welding elbows is a simple and widely used inspection method. It is an important part of finished product inspection. It is mainly to find defects on the weld surface and dimensional deviations. Generally, it is inspected by naked eyes, with the help of standard templates, gauges, magnifying glasses and other tools. If there is a defect on the surface of the weld, there is a possibility of a defect inside the weld.

3. To beat the butt-welding elbow, if the sound is very brittle and the echo is not very dirty, then the famous butt-welding elbow is the latest choice, not the recycling of waste elbows.

The above is the relevant content of the butt welding elbow. I hope it can be helpful to you. Thank you for watching.