ASME B36.19M-2004 pdf free download.Stainless Steel Pipe.
ASME B36.19M covers the standardization of dimensions of welded and seamless wrought stainless steel pipe for high or low temperatures and pressures.
The word pipe is used, as distinguished from iub€, to apply to tubular products of dimensions commonly used for pipeline and piping systems. Pipes NPS 12 (ON 300) and smaller have outside diameters numerically larger than their corresponding sizes. In contrast, the outside diameters of tubes are numerically identical to the size number for all sizes.
The wall thicknesses for NI’S 14 through 22, inclusive (ON 350—550, inclusive), of Schedule lOS; NI’S 12 (DN 300) of Schedule 405; and NPS 10 and 12 (DN 250 and
300) of Schedule SOS are not the same as those of ASME B36.IOM, The suffix “S” in the schedule number is used to differentiate B36.19M pipe from B36,1OM pipe. ASME B36.IOM includes other pipe thicknesses that are aLso commercially available with stainless steel material.
2 SIZE
The size of all pipe in Table 1 is identified by the nominal pipe size.
The manufacture of pipe NI’S ‘ (ON 6) through NI’S 12 (DN 300), inclusive, is based on a standardized outside diameter (OD). This OD was originally selected so that pipe with a standard OD and having a wall thickness that was typical of the period would have an inside diameter (ID) approximately equal to the nominal size. Although there is no such relation between the existing standard thicknesses — OD and nominal size — these nominal sizes and standard ODs continue in use as “standard.”
The manufacture of pipe NI’S 14 (ON 350) and larger proceeds on the basis of an 00 corresponding to the nominal size.
3 MATERIALS
The dimensional standards for pipe described here are for products covered in ASTM specifications.
6 PERMISSIBLE VARIATIONS
Variations in dimensions differ depending upon the method of manufacture employed in making the pipe to the various specifications available. Permissible variations for dimensions are indicated in each specification.
7，PIPE THREADS
Unless otherwise specified, the threads of threaded pipe shall conform to ANSI/ ASME B1.20.1, Pipe Threads, General Purpose (Inch).
Schedules 5S and 10S wall thicknesses do not permit threading in accordance with ANSI/ ASME B1.20.1.
8 WALL THICKNESS SELECTION
When the selection of wall thickness depends primarily upon capacity to resist internal pressure under given conditions, the designer shall compute the exact value of wall thickness suitable for conditions for which the pipe is required, as prescribed in detail in the ASME Boiler and Pressure Vessel Code, ASME B31 Code for Pressure Piping, or other similar code, whichever gov-
erns the construction. A thickness shall be selected from the schedules of nominal thickness contained in Table 1 to suit the value computed to fulfill the conditions for which the pipe is desired.