Selection of container connection method
Thread Content
One of the reactors is made of seamless steel pipe with a diameter of 70 MM. There are two ways to connect the ends of pipes. One method involves welding a pipe cap to the seamless pipe and then creating a weld joint in the pipe cap; the other method involves welding a reducer fitting to the end of the seamless pipe, with the smaller-diameter end of the reducer fitting being welded to form a weld joint. Which of these two methods is more reasonable? Thank you! ! !
Recommendation: Seamless pipe end welding reducer joint; the small-diameter end of the reducer joint is welded to another joint
Your reactor is of the pipe-type, right? I would recommend using elbows instead. As for pipe caps, their strength and reliability cannot be guaranteed; there’s a risk that problems may arise at the connection points. It’s better to use elbows along with pipes, after all, these are the types of components used in standard pipelines, and the likelihood of problems occurring is much lower
It depends on the level of pressure, but generally it’s better to use a swivel joint
Consider using a large and small end with folds
It is best to use large and small ends with flanges, as the butt welding method facilitates flaw detection. Of course, if the pressure and temperature are low, a pipe cap will also work.
It depends on the pressure level and the specific pipe diameter. If the pressure is high, it is recommended to use reducers. If there is a large difference in pipe diameters, such as from DN300 to DN50, it is advisable to use pipe caps together with connectors.
The first method (weld joint with an opening in the pipe cap): the former has a corner joint configuration, while the latter is a butt joint. Under load, the latter has a better stress condition than the former ； During equipment manufacturing, non-destructive testing (RT, UT) is also easily employed to control the quality of weld joints.