Is socket welding necessary to connect flanges to pipes? Or it can be butt welded on the flange?
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As shown in the picture above, the flange diagram shows that there is a pipe (dashed line) extending in, so that it can be welded and connected. But is it possible to weld on the horizontal plane of the flange in order to increase the inner diameter of the short pipe (some instrument casing diameters are too large to extend in)
WN non-standard flanges can be used!
I understand what you mean. There is something wrong with welding according to the method you mentioned. It does not meet the requirements of the specification. There is no such way of welding. You can change the flange form.
Is there any problem with the welding of flat flange?
Whatever you need can be used. For flat welding, use a flat flange or a stiffened flat welding flange, and for butt welding, use a stiffened butt welding flange.
If you must increase the pipe diameter, install a reducer on the flange, and then connect the pipe to the big end of the reducer.
Is this welding method not feasible?
Is this what you mean by flat butt welding?
Connection points on foreign materials. relatively clear.
In addition to the strength meeting the safety requirements of the process, the structure also considers the operability of the installation of the flange and the pipe.
I'd like to ask which foreign country the information comes from? Is there a standard name?