How to check the quality of butt welded elbows from appearance?

When many users buy butt welding elbows, because there is no professional testing equipment, this time can only detect the quality of butt welding elbows from the appearance, the following are several common determination methods.

1, from the surface of the butt welding elbow, the manufacturing process is not exquisite, generally speaking, a good butt welding elbow company will absolutely be careful in production, there will be no friction defects and so on. The cross section shape of shoddy butt welding elbow is uneven, because the manufacturer in order to save materials, the pressure of the first two lines of the finished roller is too large, the strength of this steel is greatly reduced, and it does not meet the standard of the shape size of the butt welding elbow. The composition of high-quality steel is uniform, the tonnage of the cold shear machine is high, the end face of the cutting head is smooth and neat, and the shoddy material is poor, the end face of the cutting head often has the phenomenon of falling meat, that is, uneven, and no metallic luster. And because the shoddy material manufacturers products cut less head, head and tail will appear big ears.

2, the appearance inspection of welded joints is a simple and widely used inspection method, is an important content of finished product inspection, mainly to find the weld surface defects and size deviations. It is generally inspected by the naked eye with the aid of tools such as standard templates, gauges and magnifying glasses. If there is a defect on the surface of the weld, there is a possibility of a defect inside the weld.

3, to knock the butt welding elbow, if the sound is very crisp and the echo is not very dirty, the butt welding elbow is the latest choice, rather than the waste elbow recycling.

The above is to introduce the relevant content of the butt welding elbow, I hope to be helpful to you, thank you for watching.