Hainan Steel news: instead of seamless steel pipe joints straight Can

Structural steel in theory, should be the same, the difference is not great, as good as seamless Longitudinal rules pipe centroid might not in the center, so when used as a compression member in particular, noted that there are defects in the pipe weld the probability is relatively high, the main part of irreplaceable seamless pipe, seamless pipe wall thickness is limited processing technology can not do very thin (seamless pipe thickness than the average thickness of the same diameter), in many cases seamless pipe material use efficiency is better, especially the large-diameter pipe.
The biggest difference is seamless and welded pipe used in gas or liquid pressure transmission (DN). Hainan Steel