Valve body and flange material
Valve body and flange material
(OP)
As mentioned the requirment of materials for equipment in standard and non standard material table(table no 5 in api 6a) body and bonnet can be 36 up to 75K for example in 5000 class but also indicated that integral end connection flanged shall be only 60,75K,
So if we want to select valve with flanged end and manufacture by forging or casting integrally, we have to use 60K for body and bonnet too, or flanges are from the body parts and can use 36K for 5000 and blow classes???
So if we want to select valve with flanged end and manufacture by forging or casting integrally, we have to use 60K for body and bonnet too, or flanges are from the body parts and can use 36K for 5000 and blow classes???





RE: Valve body and flange material
RE: Valve body and flange material
RE: Valve body and flange material
They do not know the exact application and loading each piece will be subjected to. They thus create a high material requirement to cover all possible applications.
For a better understanding of API flange performance see API TR 6AF1.
If you are incorporating a flange not listed in API 6A such as a compact flange or an OEC you would refer to footnote C.)as specified by manufacturer. Then the specification is up to you.