May I ask if American standard pipes can be welded to Chinese standard flanges?
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It’s like this: our natural gas storage tanks are designed in accordance with the national standard GBT150. The pipes are intended to use AMSE’s American standard pipes, while the flanges on the storage tanks must be of the national standard type. Flanges of different standards cannot be connected to each other. So I would like to ask the experts here – is it possible to weld a national standard flange onto the end of an American standard pipe so that they can be connected? Or do you have any solutions? Do storage tanks also need to be designed in accordance with ASME standards?
If the storage tank has already been designed and manufactured, then material substitution is only possible by replacing the flanges at the pipe ends – that is, using national standard flanges of the same pressure rating and material in place of ASME-standard flanges – provided that the design institute is consulted and gives its approval; generally, the design institute will agree to such a request.
1. Are the storage tanks and pipelines designed? 2. Has information on the equipment been provided for the design? 3. Generally, the pipelines follow the path of the equipment
This post was last edited by bfdlwolf on 2019-12-6 08:07. It can be fitted with flanges in accordance with the HG20592-2009 Series A standard; Series A is an internationally recognized standard (commonly known as imperial piping)
Sure. But first, measure with a ruler to check whether the dimensions meet the welding requirements.
The A-series flanges can be used; the American standard flanges correspond essentially to the pipe sizes of the A-series fittings in the national standard.
People in this piping field should be able to read gauge tables, but they often miss things
For matched flanges, if the inner and outer diameters and wall thicknesses are not identical, special flanges are required