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Maybe the elbow is from Russia and was built to GOST dimensions.

Hans Hendrik, Chemical Engineering Magazine has published a book on piping engineering containing numerous interesting articles from the 70-ties. You will find your requested article on pages 94 and 95 of this book: Process Piping Systems (Chemical Engineering) Hardcover: 482 pages Publisher...

jproj See also Interpretation 2-40 to ASME B16.5: http://cstools.asme.org/csconnect/pdf/CommitteeFiles/28086.pdf

"Piping Materials Guide" by Peter Smith 1st Edition, 2005 The back cover calls it "the only book of its kind on the market." Well..., I was not impressed, though. Ever since I have read the book open-eyed for the first time I have wanted start a thread compiling the surprisingly high number...

I am neither questioning that double-welding of slip-on flanges is a good and recommended practice, nor is it my intention to encourage anybody to single-weld slip-on flanges. However, mbc2009 is wrong in stating that double-welding was a general mandatory requirement by all piping codes. e.g...

guys, do we really need fancy computer programs to determine the volume of a quarter donut? http://en.wikipedia.org/wiki/Torus ... o tempora, o mores... ;-)

Hi essenwood, check this link for further inspiration on items to be reviewed: http://www.red-bag.com/jcms/index.php/design-guides/46-design-guides/356-bn-dg-c12-checking-a-3d-pds-piping-model-and-definition-of-percentage-completion

More wild guesses: The material listed in the BOM might include same extra straight pipe length to fabricate - wear pads for sliding supports, - reinforcing pads for branches, - trunnions for pipe supports, - dummy supports, - mitered elbows, - field bends (small bore piping), - spool...

BJaffa, provided the work you are going to perform is to seal weld a threaded joint on a piping system the code provision you are looking for is: ASME B31.3 (2006) Par. 328.5.3 Seal welds shall cover all exposed threads or respectively ASME B31.1 (2004) Par. 127.4.5 Where seal welding of...

VinW, your description sound like Guideline VBG-R 513 e "Internal Cleaning of Water-Tube Steam Generating Plants and Associated Pipework" published by VGB PowerTech e.V. www.vgb.org obtainable from http://www.vgb.org/shop/product_info.php/products_id/70

Reading this thread I had a feeling that it may just not be good enough to ask whether the branch connection will be adequately designed once the tie-in is done. You also have to find a safe way to get there. Is everybody in this forum really convinced that a welder assigned to the job of...

What I hate most about tilting disc check valves is the restricted accessibility for maintentance. The body of a swing check valve typically is equipped with a separate flanged cover plate. This allows you to access the flapper for maintenance or to remove the flapper for line testing and...

Airman23, According to the glossary of Appendix D (see section D.3 of EN 13480-3) "B" represents the inner diameter of the flange. This interpretation fits both to the illustrations in Appendix D and also to the unit given (i.e. mm). "k" appears to be an empirical factor to consider the flange...

Airman23 Probably it would be helpful to quote the Section No. or Equation No. you are having trouble with. My german version of EN 13480-3 does not mention term "k" on its page 209, although contents generally should be equal.

Degas, I agree with Ashereng, there is no relation between ANSI and WOG. See also MSS-SP 25 "Standard Marking Systems for Valves, Fittings, Flanges and Unions", which is one of the few standards explaining the meaning of "WOG". Quote from Par. 4.1.3. ( in my 1998 ed.): The Rating Designation...

1969grad, A234 are not castings. See ASTM A 234 - Par.1.3: "This specification does not cover cast welding fittings or fittings machined from castings. Cast steel welding fittings are governed by Specifications A 216/A 216M and A 217/A 217M."

leojose, Reference to the abreviation "WOG" is made in MSS SP-25 (in my 1998 Ed. it's a note to Par. 4.1.3). "WOG" (water, oil, gas pressure) is said to correspond to "CWP" (Cold Working Pressure). CWP is the maximum pressure rating allowed under normal "anbient" temperature conditions, which...

Hi doogtop, Am I right in assuming, that you are looking for ANY information on equipment designation, just to give you a rough idea what could be current practice in the industry? If -in addition- you are looking for FREE information, "the usual suspects" probably are: NORSOK...

jeni333, IMHO this symbol does not represent the flow through the seat as mentioned by zdas04, but the internals of the valve in a cross-sectional view. The horizontal line represents the disc. Thus the normal flow (up through the seat) would be from left to right. See also the pictures shown...

Table 3 of ASME B16.5 is not a stand-alone document. You first have to fully understand the pertaining paragraph ("Flange Facing Finish Imperfections") of ASME B16.5 before you can successfully use Table 3. The paragraph reads as follows: "Imperfections in the flange facing finish shall not...