Direct weld forged steel socket (reducer) to socket welding flange

the reducer is socket welding fitting.

I don't think so...#1...well in that case I don't see a problem....but I'm not in charge....

Thank you for your reply.

If you can, please give an engineering reason with your reply.

thanks.

For this you should use a 2" x 1 1/2" socket weld bushing (also known as an insert).

you means that should I use bushing(reducer insert) instead of reducer?

Please give more explanation.

You need to be more specific in your description, there are dozens of variables involved here...You can use a reducer bushing that is OD 2" and ID ~1.5" X 2 to 3" that will work for male to female depending on pipe wall thickness...

Pipe thickness is STS304 SCH40(thickness is 3.7mm, O.D is 48.6mm). In your mention, I can do butt weld of 1 1/2" pipe to bushing and do socket weld of bushing to flange. Is it correct your mention?

A hydraulic test afterwards would answer that question.

Yes if the fit is acceptable and the materials are compatible....is the tank also sts304?

Yes. A socket-weld reducer is female on both ends. A socket-weld bushing (insert) is male on the larger-sized end and female on the smaller.

A pup and reducer will require 3 welds; a bushing needs only 2.

If you search for weld fitting catalogs (Bonney Forge, Ladish, et.al.) you can find pictures and dimensions.

In lieu of a bushing/insert, you might be able to use a short length of 2-inch Sch 80 pipe, but you'll need to make sure not to slide the 1 1/2-inch pipe too far in.

thank you for your kind explanation.

Is this "homework", or is there a client piping spec that needs to be followed for <...50barg...water...> service (rhetorical question - NNTR)?

• If the latter, then the question is superfluous, for the answer will be found within it.
• If the former, then "whatever floats" will do.

<... save money....>

What is the value of waiting for an answer from a global anonymous internet forum such as this, and which option is the cheaper? During the wait, the welding could have already happened - the forum isn't to know.

thanks your comment.

this category is required from my plant industry.

when i found this web., i wish to get engineering reason to be available to weld fitting to flange directly.

piping line connection is simple and easy.

but it's different between piping line connection and right connection as you know.

I wanna get right way; to connect piping line in engineering.

thanks.

• Consider the possibility of its never having been done before and the proposition breaking new ground, as it were.
• Consider the possibility of no CR4 reader having done it before.

Prior experience is of value. If the organisation has done this before without impact, then the process would warrant embedding in a procedure so that, going forward, it can be repeated with a high level of confidence by any competent person.