1. Welding processIn the welding process, the welding method of the spiral steel pipe and the straight seam welded pipe is the same, but the straight seam welded pipe will inevitably have many T-shaped welds, so the probability of welding defects is greatly increased, and the welding residual stress

1. Do not contact with other metals, because stainless steel pipe fittings will be rusted by dissimilar metals, such as screws, etc. Although it is not serious at first, if you wipe it with a cloth and neutral detergent, you will see the rust.2. Another factor for the rust of stainless steel pipe fi

1. Optimization of sulfate zinc platingThe advantages of sulfate galvanizing are that the current efficiency is as high as 100% and the deposition rate is fast, which is unmatched by other galvanizing processes. Because the crystallization of the coating layer is not detailed enough, and the dispers

Straight seam steel pipe production temperature:In the process of producing straight seam steel pipes, it is necessary to strictly control the temperature, so as to ensure the reliability of welding. If the temperature is too low, the welding position may not reach the temperature required for weldi