[ndshinde]

Great entertainment.

3″ x 2″ reducer may be defined as SCH XS only as i dont see any problem for welding of SCh XS 2″ end of the reducer with SCH STD pipe. Refer to ASME B16.25 and you can get the answer.

I said i need to talk to some senior guy who has got good experience. Let me find one and i will post the answer.

No need to scratch head and waste time doing NVAs.

[ndshinde]

But even the purchases decsription which go to vendor specify only one schedule. Pipeclass doesn’t go to vendor but purchse descriprion goes and it specifies only one schedule. I think let me find out some logical reason from some senior guys and may be if i get convinced i will post it in the forum

Thanks

[ndshinde]

Thanks hernan,
Sometimes clarification are known but needs to be tested. Thanks again

[ndshinde]

I have seen it in many specs. If we dont know the thing then we should not assume that its not there.

[ndshinde]

What i understand is we can specify any schedule to any material pipeand fittings as long as it is easily available in market. It doesn’t matter whether it follows a perticular standard or not. Many countries have there own systems and may have different practices too.

[ndshinde]

I am talking about a common practise followed in many companies. They dont specify both the scedules. I am not clear what is the philosophy behind that. May be they are ensuring that thickness difference is within limits specified by B16.25

Not crystal clear yet. Does anybody know why?

[ndshinde]

But we use non S schedules as per B16.10 for SS pipes. Why cant we use B36.19 S schedules for CS?

[ndshinde]

Using SS316 valve may be a good option

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