Q345 Welded Round Steel

The welding process has a significant impact on the quality of Q345 welded pipe, which is mainly reflected in the following aspects:

Microstructure of Welding Heat Affected Zone (HAZ) and Weld Metal (WZ): According to Research
, the use of high-frequency (HF) K-TIG welding technology can significantly improve the welding microstructure of Q345 steel. Compared with ordinary K-TIG welding, the grains in the melting zone of high-frequency K-TIG welding are more refined and the amount of acicular ferrite is increased, which helps to improve the mechanical properties of the welded joints.
.

Hardness and strength of welded joints: The weld hardness curve of high-frequency K-TIG welding is generally higher than that of ordinary K-TIG welding, with the maximum value increasing from 199HV to 212HV
. In addition, the tensile curve shows that the strength of high-frequency K-TIG welding is comparable to that of the base material, indicating that high-frequency current helps improve the strength and hardness of the weld.

Q1: Why choose us?

A: We is affiliated company of Angang group top 10 state-owned steel mill in China with many years history.

Q2: Can you make the product with my design?

A: Yes, we can. We supply customized service. You can send us all the details of what you need, then we will provide detailed quotation.

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