What is xh pipe schedule

Only emails and answers are saved in our archive. Cookies are only used in the browser to improve user experience. Some of our calculators and applications let you save application data to your local computer. These applications will - due to browser restrictions - send data between your browser and our server. We don't save this data. Google use cookies for serving our ads and handling visitor statistics. AddThis use cookies for handling links to social media. For standard fittings, it is pretty much assumed that our client wants class fittings.

But an XH or schedule 80 fitting can be class , , or lb. All threaded and socket weld fittings except some plastic and merchant steel are classified and should be specified by a pressure class.

But if you're running psi, you would not want to use a "STD" or class fitting. Nor would you need to use the added weight, flow restriction and cost of XH pipe. Hence the need for a pressure class fitting. Specifying your fittings with a pressure class will ease your procurement and help insure you receive the right product for your application. If you have any questions regarding the specifications on pipe, valves, fittings or hangers, give us call.

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Emails are serviced by Constant Contact. Should consider revising the article based on the current specifications. Good content though. On a weld neck flange, the pipe schedule defines the bore. In this case, the Dutch talking about a "8 duimer". I'm really curious how people in other countries indicates a pipe.

Such as above defined, no inside diameter corresponds to the truth 1" 25,4 mm. The inside diameter is determined by the wall thickness WT. Schedule 10, 40 and 80 are in many cases the same as schedule 10S, 40S and 80S.

Pipes with suffix " S " have in that range thinner wall ticknesses. ASME B Summary: Pipe size is specified with two non-dimensional numbers, nominal pipe size NPS schedule number SCH and the relationship between these numbers determine the inside diameter of a pipe. Examples of actual O. Actual outside diameters NPS 1 actual O. Facts you need to know! Remark s of the Author The person directly responsible for the nominal pipe size was a gentleman by the name of Robert Briggs.

Briggs was the superintendent of the Pascal Iron Works in Philadelphia. In , he wrote a set of pipe specifications for iron pipe, and passed them around to all of the mills in the area. Realize that in , the United States was engaged in the Civil War. Each pipe mill made its own pipe and fittings to its own specifications.