Jan 26, 2010· Hi when you are testing out for an ASME coding what is the restriction on miniimum size certified. For example if you test on on 6 inch pipe its says on the coding that the minimum size pipe you are certified for is 2.5 inch pipe and that means you are not certified to weld smaller pipe right ??
Concentrations of perfluorinated acids (PFAs) were measured in various environmental matrices (air, rain, snow, surface runoff water, and lake water) in an urban area, to enable identification of sources and pathways of PFAs to urban water bodies. Total PFA concentrations ranged from 8.28 to 16.0 pg/m3 (mean 11.3) in bulk air (sum of vapor and particulate phases), 0.91 to 13.2 ng/L …
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