B31.3 Materials
B31.3 Materials
(OP)
Is there any paragraphs in ASME B31.3 such as ASME Sec 1 PG-11.1 that allows the use of materials without material test reports. I have a blind flange I would like to use it has all the required markings but no MTR.





RE: B31.3 Materials
If I bought that flange from a reputable supplier, I would use it. Assuming that it was stamped A-105 and B16.5.
RE: B31.3 Materials
Subject: ASME B31.3-2004, Paras. K323.1.5, Product Analysis and K346.2(b), Required Records
Date Issued: March 29, 2006
File: 06-298
Question: Does ASME B31.3-2004 require any Certified Material Test Reports (CMTR)?
Reply: No; however, see paras. K323.1.5 and K346.2(b).
Hope that helps,
Cheers,
DD
RE: B31.3 Materials
Manufacturer marking is also in punching you also can ask for MTC i.e. 3.1 or 3.2
Lalit Mohan Kothari
TUV NORD
"Dreams and dedication makes powerful combination "
RE: B31.3 Materials
What PMI device or method would you recommend to Gemmell that would help to distinguish a 70 UTS carbon steel plate from a 55 UTS carbon steel plate?
RE: B31.3 Materials
RE: B31.3 Materials
The OP was asking about a blind flange, which could easily be fabricated of plate material.
But I'd still like to know what PMI device could distinguish between grades of the same specification of steel. Simply put, I'm not aware of any such thing - but I am not a specialist in that field. In some cases there could be substantial value in simply identifying one carbon steel spec from another, e.g. A53 from A106.
RE: B31.3 Materials
We regularly see MTR's certifying a pipe to API 5L, A53 and A106.
RE: B31.3 Materials
Also, it doesn't about multiple certifications. Ignore all of the overlapping ones except the one you need. Either the material in question meets that spec, or it doesn't. In my experience, the off-spec materials have been 5- and 9-Chrome [too lean], 316 stainless [too lean, too little Molly], and gold wedding rings [12-karat, instead of 18-k].
RE: B31.3 Materials
The question was whether or not B31.3 requires mill certs for B16 piping components with durable markings. The answer to that question has been provided, and it's no. It's a popular myth that MTRs for such components is a code requirement rather than a client preference.
As to the usefulness of PMI, Duwe6 has outlined it pretty well. Note that some XRF machines are blind to fairly heavy elements such as Ti and hence can't distinguish 321 from 304 etc. They absolutely cannot do carbon content.