ASME B36.19:2022 pdf download Welded and Seamless Wrought Stainless Steel Pipe
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This Standard covers the standardization of dimensionsof welded and seamless wrought stainless steel pipe forhigh or low temperatures and pressures.
The word “pipe” is used, as distinguished from”tube,” toapply to tubular products of dimensions commonly usedfor pipeline and piping systems.
(22)2 SIZE
The size of all pipe in Table 2-1 is identified by thedimensionless designator nominal pipe size (NPs)[diametre nominal (DN)]. Pipes NPs 12 (DN 300) andsmaller have outside diameters numerically larger thantheir corresponding sizes. In contrast, the outsidediameters of tubes are numerically identical to the sizenumber for all sizes.
The manufacture of pipe NPs 1%8 (DN 6) to NPS 12 (DN300), inclusive, is based on a standardized outsidediameter (O.D.). This O.D. was originally selected sothat pipe with a standard O.D.and having a wall thicknessthat was typical of the period would have an insidediameter (1.D.) approximately equal to the nominalsize. Although there is no such relation between theexisting standard thicknesses —0.D. and nominal size— these nominal sizes and standard o.D.s continue inuse as “standard.”
The manufacture of pipe NPS 14 (DN 350) and larger isbased on the O.D.being the same as the nominal pipe size.3 MATERIALS
The dimensional standards for pipe described here arefor products covered in ASTM specifications.
4 WALL THICKNESS
The nominal wall thicknesses are given in Table 2-1.Thewall thicknesses for NPS 14(DN 350) to NPS 22 (DN 550),inclusive, of Schedule 10S; NPS 12 (DN 300) of Schedule40S; and NPS 10 (DN 250) and NPs 12 (DN 300) of Sched-ule 8os are not the same as those of ASME B36.10. Thesuffix “S” in the schedule number is used to differentiateB36.19 pipe from B36.10 pipe.ASME B36.10 includesother pipe thicknesses that are also commercially avail-able with stainless steel material.
5 wEIGHTS/MASSEs
(22
The nominal weights (masses)’ of steel pipe are calcu-lated values and are tabulated in Table 2-1.
(a) The nominal plain end weight, in pounds per foot, iscalculated using the following equation:
wpe = 10.69(D – t)t
where
D = outside diameter to the nearest 0.001 in. for NPS
8 and smaller,and to the nearest 0.01 in. for NPS10 and larger (the symbol D is used for O.D. onlyin mathematical equations or formulas)
t = specified wall thickness, rounded to the nearest
0.001 in.
wpe = nominal plain end weight, rounded to the
nearest 0.01 lb/ft
(b) The nominal plain end mass, in kilograms permeter, is calculated using the following equation:
Mpe = 0.0246615(D – t)t
where
D = outside diameter to the nearest 0.01 mm for DN
200 and smaller, and to the nearest 0.1 mm forDN 250 and larger (the symbol D is used for o.D.only in mathematical equations or formulas)Mpe = nominal plain end mass, rounded to the nearest
0.01 kg/m
t = specified wall thickness, rounded to the nearest
0.01 mm
6 PERMISSIBLE VARIATIONS
Variations in dimensions differ depending upon themethod of manufacture employed in making the pipeto the various specifications available. Permissible varia-tions for dimensions are indicated in each specification.7 PIPE THREADS
Unless otherwise specified,the threads of threaded pipeshall conform to ASME B1.20.1.
Schedules 5s and 10s wall thicknesses do not permitthreading in accordance with ASME B1.20.1.
ASME B36.19:2022 pdf download
