Recent content by B.Beykaee

the owner says that because of the heat transfer, the second picture produce hot spot in the line. is it true?

please help me to have an idea about this matter. thnks

why the sequence of brick retainer rings in which the gaps are in front of each other is incorrect? please see attached picture.https://files.engineering.com/getfile.aspx?folder=b4c9266e-a20c-4efc-b414-e40ab4dc9b63&file=IMG-20210529-WA0006.jpg

Hi in refractory lines, there is some metal arcs called " brick retainer rings". if there is an metal expansion joint in the line, in order to prohibiting of expansion joint locking, two sets of brick retainer rings will be placed beside the expansion joint and the volume under expansion joint...

ok.... I am deleting them. sorry. https://www.sid.ir/FileServer/JE/1000820170213.pdf

thanks LittleInch. I think maybe in each group someone help me... about your answer i have an other evidence about this matter. please see attached picture. i found this link in internet. please see page 6/12. para. 4.1.2

Hello every one. I have a problem in EJMA standard. We know that p(si) and p(sc) are two pressures that above them we have in-stability. so the limiting design pressure according to the section 4.12.1.6 will be the minimum of these two value. but the problem is in this phrase that says : "These...

We can't find a671 in the market. So we have to buy an equivalent plate. Please tell me a common material to substitutute it with a671.

hello every body we want to construct a 80" pipe with plate with one weld seam. the owner wants from us to use a plate which should be equivalent to ASTM A671 CB60 CL.10. please tell me a plate specification

thnks every body the Cr content of 304 is more than 301. so 304 is better. i know. but how can i say to them that 301 pass their condition?

hello every body I have a problem with my owner. there is a 50 MM thick disk, which is a pressure boundary component (pressure part), which is subjected to 52 bar test pressure, the temp. is 250 c, and the fluid is NH3+H2S+H20+CO2, the material of the disk was selected AISI 304, for some reason...

thnks Geoff13 i saw a1.1 , but in note 1 it says that under-tolerance is 0.01 in and in the first row of the table , over tolerance is mentioned!? if i mistake please clarify.

hi in sec 8 says that if the under-tolerance of the plate we use is under 0.01 in or 6 percent of plate thickness we should consider that in the thickness calculation. so for example if i use a516 gr.70, from where i can know its under-tolerance for calculation? in other words, in which spec or...

hello every body where on b31.3 is about tolerance of diameter(oval) after welding plate for fabricate a pipe?

IN B31.3, FOR WALL THK. CALCULATION, DESIGN PRESSURE IS USED. THE QUESTION IS WHY THE PIPE RESIST AGAINST TEST PRESSURE WHICH IS AT LEAST 1.5 X DESIGN PRESSURE. FOR EXAMPLE , NOW I HAVE A REQUISITION FOR A 24" STRAIGHT PIPE WITH THESE SPECS: 1-DESIGN PRESSURE =28 BARG 2-DESIGN TEMPERATURE= 300 C...