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ASME B16.1-2010 pdf free

ASME B16.1-2010 pdf free.Gray lron Pipe Flanges and Flanged Fittings Classes 25, 125, and 250.
A flanged joint is composed of independent interrelated components; the flanges, the gasket, and the bolting, that are assembled manually. Proper controls must be exercised in the selection and application for these elements to attain a joint that has acceptable leak tightness. Special techniques, such as controlled bolt tightening described in ASME PCC-1, may be used to achieve  a tight joint in service.
Temperatures shown for the corresponding pressure rating shall be the material temperature of the pressure- retaining structure. It may be assumed that the material temperature is the same as the fluid temperature. Use of a pressure rating at a material temperature other than that of the contained fluid is the responsibility of the user and subject to the requirements of any applicable code or regulation.
Low-Temperature Ratings Pressure ratings for temperatures below – 29°C (-20°F) should be determined in accordance with lowtemperature properties of gray iron (ASTM A 126) as governed by applicable code or regulation.
Gray Iron has lttle ductility, therefore, the resistance of these flanges and flanged fttings to excessive forces and suddenly applied loads is significantly ]less than for more ductile materials such as steel. The following precautions are recommended:
(a) These flanges and flanged fttings should not be used where suddenly applied loads such as rapid pres-sure fluctuation may occur.
(b) Alignment of flange faces is essential along with control of assembly bolt torque so as not to over-stressthe gray iron flanges. Care should also be exercised to ensure that piping loads transmitted to gray iron flanges are controlled.
As applied in this Standard, the use of the phrase “nominal pipe size” or the designation NPS followed by a dimensionless number is for the purpose of identifying the end connection of piping, fianges, or flanged fttings. The number is not necessarily the same as the flange or flanged fitting inside diameter.ASME B16.1 pdf free download.

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