Newbie question regarding takeover
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A couple of days ago, I saw such pipe end dimension data on a drawing: 168.3*16, or 6 inches. Does 168.3 refer to the inner diameter or the outer diameter? Additionally, 168.3*16 is indicated on the diagram – is that the value after reinforcement? I hope the more experienced colleagues will kindly share their insights. Thank you
168.3 refers to the outer diameter; since 168.3*16 is indicated on the diagram, reinforcement has already been taken into account
168.3 Tubes with such an outer diameter are not easy to find, right? It doesn’t seem to be available as a standard; I’m not very sure. Do I have to create it myself? Or are there pipe diameter series based on imperial units?
It should be φ168.3*16, with an outer diameter of 168.3 and a thickness of 16
Standard American pipes are quite common. If standard American pipes are shown in the diagram, then standard American flanges will also be present.
I strongly despise foreigners’ approach of designing everything according to their standard sizes; that way, we’ll continue to rely on them in the future. This is fishing!
Haha, there’s nothing we can do; we’re still in the process of development, right? When we become stronger, let them take over using metric flanges.
How to design the reinforcement for such a take over, and what standards should be used? ASME? In common design reference books, there are no suitable dimensions for the pipe reinforcement method; how can this be resolved? Thank you all! !
The question might be quite simple, but I would really appreciate it if the experts could patiently explain it, as a way of helping those who are less experienced. Thank you very much!
Is there no one to help? For this type of reinforced design with openings, if pipe connections are to be used for reinforcement, how should it be designed and what standards should be applied?
Abroad, pipes are specified by their outer diameter, while in China they are usually specified by their inner diameter, hehe
168.3 refers to the outer diameter. Additionally, 168.3*16 is indicated on the diagram; it represents the dimensions before reinforcement. These are American standard pipes, which are not commonly used, so there may be limited information available on them. The original poster can consult books related to American standards
For opening reinforcement, calculation can be done according to GB150
It should be 168.3 in outer diameter and 16 in thickness.
168.3 refers to the outer diameter; the thickness is 16 mm. Being this thick, it must be a forged pipe
The pipes you’re referring to are probably stainless steel pipes. According to the national standard GB/T17395-1998, 168.3X16 corresponds to the specifications of Series 1; it is Φ168x16, with 168.3 being the outer diameter of the pipe. Therefore, the specifications you mentioned are not necessarily American standards.
Φ168.3 is the outer diameter, 16 is the wall thickness; reinforcement has already been taken into account in the drawings
The ASME standard specifies an outer diameter of 168.3 for the pipe, with a wall thickness that can be 16, as indicated on the drawing; if there are no reinforcing rings, then the pipe is already fully reinforced
The pipe diameter indicated on the drawing refers to the outer diameter of a 6-inch pipe
I can’t quite understand it! For a 6-inch diameter, the outer diameter is indeed 168.3 mm; however, a wall thickness of 16 mm does not exist according to American standards. Similar sizes such as SCH120 = 14.27mm or SCH160 = 18.26mm are quite strange; the outer diameter is specified in inches while the wall thickness can be chosen arbitrarily! Haha