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Stress relieving in China

Stress relieving in China

Stress relieving in China

(OP)
Does anyone know of companys in the Republic of China that can stress relieve a large steel pressure vessel -30 feet high by 20 foot diameter?

Thanks

RE: Stress relieving in China

rbrez,

Do a google search on "pressure vessel PRC" or something like that and select the shop closes to your vessel location.  PWHT for 20' diameter vessel is nothing special so you should'nt have any problem.  The problem is communicating with the shop!

RE: Stress relieving in China

You had also better carefully review any shop PWHT procedures, and have a detailed traveler for the work. Don't take anything for granted - I heard of some serious code-related problems with fabrication shops in China. If necessary, hire someone to baby sit this job.

RE: Stress relieving in China

In line with the above advice here is one company that maybe be able to help you on the Chinese end. I have an acquaintance that is using them for some container shipments but hasn't received the shipments to verify that they did their job.  If I understood him there are several firms that do this type inspection and verification work.
I would imagine that if this type work isn't under their umbrella they would know someone who can do the work.   

http://www.krtinspect.com/index.html

RE: Stress relieving in China

rbrez,
I may help. Tell me what standard you want for the stress releas, ASME or local standard. Only this stress release or you want this PV to be fabricated there?

RE: Stress relieving in China

(OP)
cmsmeng:

The vessel is already being manufacutured in the China area.  We just want to stress relief it to about the 1200 degree F temp for a few hours. Any advise would be  appreciated.

rbrez

RE: Stress relieving in China

Well you mentioned Republic of China in your post, do you mean the tank is in Taiwan?

RE: Stress relieving in China

hi rbrez,
i need to know where the vessel is so that i can recomend you a company.

RE: Stress relieving in China

(OP)
The vessel will be built in Tongxiang just outside of Shanghai.

RE: Stress relieving in China

The China company said the tank is too big to be transported to its site.

RE: Stress relieving in China

if the shop has sufficient electrical supply then the stress releiving company should be able to bring their machines & enough chicklets to the shop to stress releive it there.  this is normal practice in the US.

if there is sufficient time you may want to locate a company capable of mobilizing the required equipment and ship it over there.

RE: Stress relieving in China

We have an on site gas fire going on right now, on a 22' diameter vessel.  While they're not doing this job, Cooperheat is one company with such capabilities, and they have an international presence.

RE: Stress relieving in China

As does Hotwork USA,,, they have an office in Shekou

RE: Stress relieving in China

so rbrez, how did it go for you?

RE: Stress relieving in China

Better off to do the work in the USA eventho. it may be costlier.  Better QC, product liability insurance and  communication (better spoken Enlish).  Also read about catastrophees of Chinese products in ASME bulletins.

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