How to weld Series A flanges and Series B pipes
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I would like to ask the experts here: in our project, the flanges and valves follow B-series standards, while the pipes use A-series standards. The pipe diameters range from DN80 to DN2200, and these pipes are to be used for circulating water at a pressure of 1.0 MPa. Most of the materials have already arrived, and installation will start soon on site. I would appreciate it if the experts could advise me on how to weld the pipes and flanges! Experts, please share your experiences. . .
It is recommended to return the flanges and place a new order; the pipelines for circulating water are generally thick, and the inner diameter tolerance of the AB series is relatively large. If the welding management requirements are not high, it is also acceptable to cut off the pipeline at the triangular end.