Minimum Thikness Requirement to Check UT Lamination of Tubular Pipe

Your vendor might have googled and read following articles well before.

However, kick out your vendor from the project site immediately, if vendor is not interested to follow Project standards or Project specifications.

Do you have a citation or the source URL for that? Please.

I've encountered lamination /porosity in plate but never in a pipe (lucky perhaps). Normally discovered when the plate having been rolled into a cylinder and made into a fuel tank fails on pressure/leak test.

Cheap crappy EA and flat sections often have flakey bits.

Shopping for material here is like a bazaar...you have to touch it to know it is real.

I'd appreciate reading the source of your quote just for the sake of context. Anything on pipes in the source?

Thanks.

? ? ? You ask: "What is Minimum thickness requirement to check UT lamination of Tubular Pipe?" and , you refer-to both A578 & A435...

You seem to be stymied, mystified, dumbfounded and confused as to the difference between PLATE and PIPE.

W H I C H of the two Standards do YOU think should apply...?

"Ok"... Perhaps my wording in (my) post #3 could have been more complete, and to the point. --- Your "OP" asked about finding laminations in pipe, and then, you make reference to two standards for checking steel plate. --- Worse, you have not given any indication as to what the pipe is used for! Pipes carrying water or sewage are subject to totally different requirements from pipes carrying gas, oil, or other hazardous materials... (let-alone steam)! --- A578/(M), if you followed the link (post # above) refers to: "standard and acceptance standards for straight-beam, pulse-echo, ultrasonic examination of rolled carbon and alloy steel plates." --- A435/(M) , if you followed the link (post # above) refers to: "standard procedure and acceptance for straight-beam, pulse-echo, ultrasonic examination of rolled FULLY Killed carbon and alloy steel plates." --- Have you searched, and looked at ANY other prospective Standards / Guides ((which might tell you what sort of acceptance criteria you 'might-ought' to be seeking)), such as: --- ((MOST Basic)) http://www.astm.org/DIGITAL_LIBRARY/STP/PAGES/STP46808S.htm --- or, ((Next Most Basic)) http://www.astm.org/DIGITAL_LIBRARY/STP/PAGES/STP23807S.htm --- or, http://www.astm.org/Standards/A898.htm or, http://www.astm.org/DIGITAL_LIBRARY/STP/PAGES/STP41981S.htm or, http://www.astm.org/DIGITAL_LIBRARY/MNL/PAGES/MNL5820131212816.htm --- (("apologies" for not inserting* appropriate links* here... I am currently limited to working via the iPhone5 screen...!))/p[] --- The proverbial "bottom line" here is: the more thorough your question is, the better the answers you'll receive... --- Wishing you success~