【Daily Question】Advanced Processing 20160923 Fill-in-the-blank: The outer diameter of steel pipes comes in two types, A and B; A is ( ), and B is. . .
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To increase popularity and foster technical exchanges among sea enthusiasts, 【One Question per Day】 is hereby launched. Participation earns 4 points of wealth! 10 wealth points as a reward for correct answers or in-depth discussions! :Lol fill-in-the-blank: There are two types of outer diameters for steel pipes, Type A and Type B; Type A pipes have a diameter of ( ), while Type B pipes have a diameter of ( ). The outer diameter of steel pipes comes in two types: A and B. Type A pipes belong to the internationally standard series (commonly known as imperial pipes), while type B pipes are part of the series still in use in China (commonly known as metric pipes). ========================================= ☛[Haichuan Activity Plan] I decide my own questions – I’ll choose the “best answer”! http://bbs.hcbbs.com/thread-1618021-1-1.html (Source: Haichuan Chemical Forum)
A is the nominal diameter, B is in inches
A is the US standard, in inches; B is the metric standard, in millimeters
The outer diameter of steel pipes is divided into American series and European series; for example, for a pipe with a diameter of 108, the outer diameter in the American series is 114, while it is 108 in the European series
LZ refers to metric and imperial systems.
Do you mean the large outer diameter and the small outer diameter?