Schedules in Piping

Schedules in pipes are large lists of pipe sizes arranged in diameters and wall thicknesses and material type that you look at for the service you want.

If you are going to pump sulphuric acid at 200C and 4000 PSI you look up the pipe type that will tolerate sulphuric acid, at 200C and 4000 PSI and create your design. The schedules are created by manufacturers of pipes and engineering societies to allow people who design piping systems to draw on past experience and the built in safety factors that man has accumulated over time.

http://www.google.ca/search?hl=en&q=%22pipe+schedules%22&btnG=Google+Search&meta=

Go to your local book store and obtain the ASME B 31 series manuals on piping which describe in detail pipe materials, strengths, alloys, etc. Pipe schedule is a system indicating the wall thickness of pipe. Schedule 40 is referred to as Standard, schedule 80 is heavy, etc. In pipe line work, AP schedules are used as well. Ex. Schedule AP 5 is equivalent to ASME Schedule 40.

This is kinda interesting because I just learned about Piping this semester in school. From what I just learned, it is pretty much what Aurizon describes it to be. Schedules in Piping..... I really like this website because it puts substance to what I am learning everyday in bookwork.

yes, grasshopper, you will learn....

Old F**T is more accurate. Pipe schedules are not large list of pipe and their nominal thickness. Schedule identifies the thickness of the pipe for a given Nom. dia. The thickness will approximate the internal pressure capability of the pipe, given no external containment is involved (ie. burial, concrete encasement, etc.). The thickness may also be used to estimate the deflection of the pipe.

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http://www.onlinepipe.com/pipechart.html#1/8

these are for steel. Just dimensions. Pressures come from other data sheets that vary with the type of steel. copper iron etc.

One of the many online resources.

In pipelab we had to design systems for various pressures and corrosive fluids and cacapcities and estimated lifetimes and we used sets of curves from the pipe schedules to replace detailed hoop stress calculations and safety factors

In the handbooks they list other metals, plastic etc and they also have recomendations for corrosive service and pressure ratings

here is a typical handbook

http://www.pipefitter.com/Pipedatabk.html

most school libraries have them and most pipe calculation software has schedule data in it. I am not sure how much is in the public domain, most people want to sell their data.

The term schedules in engineering refers to any table of information. I think what he is looking for is what schedule means when refering to pipes (i.e. Sch 40 and Sch 80).

yes, but when he says pipe schedules he takes it into that realm

Try this; it will give you some insights and something closer to what you seem to be looking for.

http://en.wikipedia.org/wiki/Nominal_Pipe_Size

HI HAPPY NEW YEAR 2007

I HAPPEN TO SEE YOUR QUESTION

I WOULD LIKE TO ADD THE FOLLOWING FOR YOUR INFORMATION

GENERALLY PIPES ARE DIVIED INTO 2 GRADES IN ASTM AND API

DEPENDING UPON THE CHENICAL COMPOSITIONA ND TENSILE STRENGTH

BUT IN PRODUCTION STEEL PIPE IS PRODUCED IN 3 WEIGHTS OR GENERAL WALL THICKNESS CLASIFICATION AS STANDARD (STD) , EXTRA STRONG (XS), EXTRA HEAVY (XH), DOUBLE EXTRA STRONG ( XXS) , OR DOUBLE EXTRA HEAVY (XXH).

THE WEIGHT CLASSIFICATION DENOTES THE WALL THICKNESS OF THE PIPE.

TO FURTHER BROADEN THE RANGE OF WALL THICKNESS FOR SPECIFIC APPLICATION AND VARIOUS PRESSURE, STELL PIPE IS MANUFACTURED IN ASSORTED SCHEDULE NUMBERS.

THESE SCHEDULE NUMBERS RANGE FROM 10 THROUGH 160 AND ARE COMMENLY AVAILAABLE IN SCHEDULES 10 , 20 ,30 , 40 , 60 , 80 , 100 , 120 , 140 AND 160 .

LIGHT WALL - SCHEDULE # 10

STANDARD - SCHEDULE # 40

EXTRA STRONG - SCHEDULE # 80

SCHEDULE - #160

DEPENDING UPON THE DESIGN PARAMETERS YOU NEED TO CHECK THE SCHEDULE.

WHAT I KNOW I HAVE GIVEN TO YOU THE INFORMATION .

GOOD LUCK

V.MURALIDHARAN

CHENNAI

PHONE - + 91 44 -2615 5467

CELL - + 91 44 - 98847 50332

Another good reference (although short and with only basic information for steel) is Crane Techical Paper No. 410. The schedules are in the back. You can usually get that for free from your local Crane valve vendor.

Stephan