What is the difference between welded steel pipes and seamless steel pipes? Can welded pipes be used for steam pipes? Is there a difference in material?
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What is the difference between welded steel pipes and seamless steel pipes? Can welded pipes be used for steam pipes? Is there a difference in material?
Look at the stress; welded steel pipes have longitudinal welds, resulting in lower strength
It is not recommended to use welded pipes, which are spiral pipes, for steam pipelines.
The original poster is likely referring to pipes with longitudinal seams, made from steel sheets, not spiral pipes.
Seamless steel pipes are made by rolling steel plates together and welding them to form a pipe with one weld line, while seamless pipes are formed through drawing processes without any seams. The production cost of seamless pipes is high, which results in higher prices; they are used in applications involving non-hazardous media, low pressures, and non-corrosive environments.
Tubes with seams are generally not needed for weights over ten kilograms
Steam pipes with a relatively large diameter are basically pressure pipes; they require design qualifications and must be submitted for inspection. Welded pipes must never be used!
The material may not necessarily differ, but steam pipes generally do not use welded steel pipes; seamless steel pipes of the same material can withstand higher pressures.
The steam pipes are made of seamless steel pipes in accordance with GB3087.
Yes, indeed; steam can also be at pressures below 10 bar~~~~~~~~ For heating steam lines with a pressure of 3.5 bar, using straight-seam welded pipes is no problem~~~
Can WB36 valves and 20 steel pipes be welded directly? No need for a transition paragraph?