How are the dimensions of the handles, lifting rings, and hooks on the manhole of a butt-welded flange determined?
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I’m a recent graduate in pressure vessel design, and I’m wondering how the dimensions of auxiliary devices such as handles, lifting rings, hooks, and swivel arms that are located on the welding flange manholes are determined Based on which standard? I need to use the 3D software SolidWorks for drawing right now; I’m seeking help! ! ! The standard adopted is HG/T 21521-2014, but this standard does not provide detailed information on these auxiliary devices.
Generally, each manufacturing plant forms its own internal standards based on the structural rationality of using these attachments as you mentioned, as well as its own manufacturing experience
Reference can be made to the standard construction atlas for steel manholes, HGT 21514–21524-2005
There are standard construction drawing sets, which need to be purchased separately