Welding Time For SS316 vs Inconel Alloy Pipe Welds

What is to be included in the calculation - just the melt time or does one include the setting-up and the breaking down time? Are these welds being done in the field or on a bench somewhere? Does the operative have to fetch and mount the pipes or will someone else do this? Are consumables to hand or do they have to be fetched from somewhere or ordered for delivery from somewhere? What is the lead time? What else is there for the operative to do while supplies are arriving? Is there sufficient equipment to carry out this work continuously or will it be intermittent? What observations have been carried out so far and what has the organisation learned from them?

There are rhetorical questions and there is no need to reply to them for the information is of no value here, because without seeing the facility and having a view of its capabilities, the best person to carry this work out is the Original Poster.

Kindly include just weld time. My question is aimed at variance or difference for welding time of these two parent materials.

Well, if that information is already to hand from experiments indicated in #3 below, then there is little scope for CR4 to add anything further. Good luck with the quest.

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There is far too much missing to even begin to provide anything likely to be specifically useful.

Get some pipe, a welder and a stop watch and time it.

Kindly let us know the answer.

Are you using the same welding technique for these materials or is it different?

Dear All,

I am going to use same technique for both material.

My question is basically aimed at variance of time between two parent materials SS316 and Inconel.

Welding time for one joint considering fit up and all set up is done for welding.

Thnks Sridhar for your kind guidance.

Awsome details.... It was really knowledge enriching answer..

I guess my aim of question is done with this answer...

Thanks a lot again...

"See # 3 above"

As these are materials that require similar handling for prep and production, I would estimate the variance to be a couple of per cent at maximum. The main variable here is the welder's skill... that will vary a great deal, and is your main problem. A welder with 20 years experience could reduce the time by more than 50%. Likewise quality weld prep.

Thank you very much for ur reply...

If there are mechanical contractors/ process piping contractors in your area, I would suggest that you inquire about their shop weld productivity. There is also a manual available developed and published by the MCAA (Mechanical Contractors Association of America that has a wealth of information regarding welding productivity of all metals used in piping. You have to be a member to obtain access for either a hard copy or web access. MCAA labor productivity uses a 1.0 factor which is the "benchmark" and then a shop would measure their historical productivity and use their experienced factor which could be higher or lower than a 1.0. This sounds like it is a shop environment so fire watch, welder pimp and other labor cost can be disregarded. Field welds are a whole different animal.

Make sure that, your company management has good relationship with client's Welding inspector.Any issues with inspector will affect weld production time.