Standards for butt-welded loose-flange connections

2010-09-21View Original

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I currently have a pair of welded ring loose-flange connections made of 304 + nickel. The control valve connected to these flanges is imported and meets ANSI standards, while the other end of these welded ring loose-flange connections is connected to metric pipes. If I decide to purchase this type of welded ring loose-flange connection, I need to submit an ERP material request, and I also need to specify a standard for it. What is the appropriate standard in this case? Is it necessary for the design institute to produce drawings for the manufacturer to fabricate it? Thank you

Reply #22010-10-13

You have proposed a special flange that meets HG615 standards at one end and HG592-2009 standards at the other end – is this correct?

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Standards for butt-welded loose-flange connections

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