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ASME B16.42 2011 Edition, November 28, 2011
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Ductile Iron Pipe Flanges and Flanged Fittings Classes 150 and 300
Page Count:52
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This Standard covers minimum requirements for Classes 150 and 300 cast ductile iron pipe flanges and flanged fittings. The requirements covered are as follows:

(a) pressure–temperature ratings

(b) sizes and method of designating openings of reducing fittings

(c) marking

(d) material

(e) dimensions and tolerances

(f) bolts, nuts, and gaskets .

(g) tests