What is the relationship between the German DIN standard and the European standard?
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What is the relationship between the German DIN standard and the European standard? There is only one outer diameter of DN500 pipe in Germany DIN2488, which is 508? And there are two types of HG20553: 508 (A series) and 530 (B series)? ? “The DIN series is the representative of the European series. The AB series in the European series is the AB series in HG. How is it contradictory? ?
There are two types of HG20553: 508 (A series) and 530 (B series). This is mainly due to the fact that China still uses metric tubes, so we added them! Others * * Yes, for such a problem, there are only British tubes!