Seamless pipes, classes A and B
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Are carbon steel seamless tubes for heat exchangers divided into Class A and Class B? Haven’t heard of it. What’s the criterion for classification?
Flange fittings are divided into Class A and Class B; in other words, seamless pipes are also classified as A/B, that is, into metric and imperial types. I haven’t encountered heat exchange tubes in imperial units yet, but many customers have requested them in imperial units.
#Here’s a quick reply: #Flange connections are divided into categories A and B; in other words, seamless pipes are classified as A or B, which refers to metric and imperial pipes. I haven’t encountered heat exchange tubes in imperial units yet, but many customers have requested them in imperial units.
Series A refers to the internationally standard series (commonly known as imperial pipes), while Series B is the series still in use in China (commonly known as metric pipes)~~
In which standard is this statement mentioned?
The outer diameters are different; the outer diameters of the two standard pipes