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Thank you weldstan, could you please guide me to relevant reading material/code or standard clauses, where i can find rules/criteria/method to determine type of edge preparation.? and when to select backing ring?

Dear LittleInch, if you do not know the answer please say "I do not know" or please do not answer at all. let those who know the answer reply. dont give obvious answer. i do not have knowledge thats why i am asking. or else why would i waste my time typing questions of which i already know answer.

Hi everyone, while welding pipes, which kind of edge preparation should be considered? single V or double V, J type or U type? what are the basis and criteria to decide which type of edge preparation should be done? Also, when should we use backing ring and when should not? which type of...

Hi All, as i understand P no. has something to do with it. but is there any strict criteria where it states that some metals can be welded together and some can not be.? i still do not clearly understand the P no. and Group no. how they are used to determine welding compatibility with other...

Hi all, I am rather new to welding procedure specifications. I have gone through BPVC section IX, and i understand it is playing pivotal role in creating WPS. i still have questions that may sound naïve to person experienced in WPS. They are as follows... 1)How to decide the welding process...