GB 150 Vs ASME SEC-VIII DIV. 1

[deep79pk]

Any pressure vessel of Chinese standard GB-150 , can be design on ASME SEC-VIII DIV. 1 or not, both have equal requirements or not?
Thanks
Aamir

[Abdel Halim Galala]

Any pressure vessel of Chinese standard GB-150 , can be design on ASME SEC-VIII DIV. 1 or not, both have equal requirements or not?
Thanks
Aamir

Any pressure vessel can be designed in accordance with any code or standard. But, due to the different factors of safety taken into consideration which depends on the code itself, you can find that the calculated vessel wall thickness per the 1st code can be differs from that calculated by the 2nd code. So, you have to nominate only one code for criteria of acceptance.
The problem we face in China designs is the type of material which is unknown to us, and it is difficult to find its equivalent to ASME or ASTM materials.

[mbc.engg]

Does any one have latest pressure vessel design code of CHINA?

[ddkkk]

[link Point to another website Only the registered members can access]

[Ali366]

Any pressure vessel of Chinese standard GB-150 , can be design on ASME SEC-VIII DIV. 1 or not, both have equal requirements or not?
Thanks
Aamir

deep79pk,

The question is a bit general and its not easy to answer it in a few lines, as this will be a full comparison of two codes and is very difficult if not impossible!

Safety factors in GB are slightly higher than ASME VIII Div.1 for CS materials at low and moderate temperatures. At higher temperature and near creep range, GB becomes a bit more conservative than ASME.
For high alloy steels (such as SS materials) the allowable stresses are practically the same in most cases and temperatures.

The formulas for thickness calculations and methods of checking the thickness under external pressure in GB are more or less the same as BS PD5500. Therefore, in some cases GB might require higher or lower thickness than what ASME requires. As long as you go for raw materials which are a few millimeters thicker than the requirement, you should be able to get the vessel past ASME and GB criteria at the same time.

Also you don't have joint efficiency in GB. It is more like PD5500 and you have three construction categories based on the material, thickness and level of NDT.

Opening and reinforcement calculations, flange design calculations and design of flat heads are similar in ASME and GB except for minor differences.

Low temperature requirements of ASME are stricter and more comprehensive than GB.

If you need to design something that is acceptable to both codes, try to use ASME materials or Chinese materials which have been adopted by ASME Section II. Otherwise, you might not be able to 'U' stamp it. Also fabrication might be an issue, as some welding and inspection requirements are different is ASME and GB.

Hope this helps.

Let us know if you have a more specific question about these codes.

Cheers,

[k007]

in few week my compagny will past the audit with the Chinese gouv. (SELO) for :Chinese licensing for boiler and pressure vessel.
Are any body already have this license ? can you share your eperience in Audit?
Thank a lot

[faizol]

Anyone having a GB 150 standard, please re-post a link.
Thank in advance.
Tq.