X-Grade Pipe with A105/A234 B16.9/B16.34 Fittings
X-Grade Pipe with A105/A234 B16.9/B16.34 Fittings
(OP)
Hi guys. I should know the answer to this, but I don't. For API X-grade CS pipe, don't we just use regular A234 WPB BW fittings and A105 flanges? As long as all are ASME P1 materials, and the wall thicknesses and flange ratings are all matched up, there's no issue - right?
I guess I'm asking - is there such a thing as X-grade fittings?
Thanks guys! Pete
I guess I'm asking - is there such a thing as X-grade fittings?
Thanks guys! Pete





RE: X-Grade Pipe with A105/A234 B16.9/B16.34 Fittings
note MSS-SP-44 has the same dimensions as B 16.5, but B 16.5 doesn't list A694 as a material and hence you get into all sorts of issues with ratings.
The key here is "As long as all are ASME P1 materials, and the wall thicknesses and flange ratings are all matched up," If you are matching wt then why are you using API 5L X grade pipe?
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: X-Grade Pipe with A105/A234 B16.9/B16.34 Fittings
Group Nos. change at X56 and X70. Your welding procedure will have to be properly qualified with impact testing for the different group nos. if required.
RE: X-Grade Pipe with A105/A234 B16.9/B16.34 Fittings
RE: X-Grade Pipe with A105/A234 B16.9/B16.34 Fittings
Your question - "The key here is "As long as all are ASME P1 materials, and the wall thicknesses and flange ratings are all matched up," If you are matching wt then why are you using API 5L X grade pipe?"
Ha. Because they have 3000' of surplus X42 they want to use up instead of buying new Fiberspar.
RE: X-Grade Pipe with A105/A234 B16.9/B16.34 Fittings
RE: X-Grade Pipe with A105/A234 B16.9/B16.34 Fittings
The problem comes when using X65 at its proper thickness and then using A105 flanges....
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: X-Grade Pipe with A105/A234 B16.9/B16.34 Fittings