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. Ultrasonic detection When the ultrasonic wave is dispersed in the tested raw material, the acoustic characteristics of the raw material and the transformation of the internal structure will positively impact the ultrasonic wave propagation. By detecting the affected level and situation of the ult

Project Location: Cambodia.Product: square steel pipe.Specifications: 130*130*6000mm.Application: Industry building construction.Arrival time: 06.20.2022.The pipes have arrived in Cambodia and were put into project use. Many cooperations have given the customer full confidence in THREEWAY STEEL.

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