ASME B16.1 pdf free download
ASME B16.1-2020 pdf free download.Gray lron Pipe Flanges and Flanged Fittings Classes 25, 125, and 250.
6.2 Bolting
ASTM A307 Grade B bolting material is recommended for gray iron flange assembly. Where gray iron flanges are bolted to steel flanges, see ASME 816.5 for bolting limitations.
7 FITTING DIMENSIONS AND TOLERANCES
7.1. Watt Thickness
It is recognized that some variations are absolutely unavoidable in the makingof patterns and castings. Equipment shall be designed to produce wall thicknesses given in the tables. Wall thickness at no point shall be less than 87.5% of the thickness given in the tables.
7.2 FacIng
(a) Classes 25 and 125 gray iron flanges and flanged fittings shall be flat faced (i.e., without projection or raised face) and finished in accordance with MSS SP-6.
(b) Class 250 flanges and flanged fittings shall have a
2 mm (0.06 in.) raised face of the diameters given in
Table 7.6.1-3 and finished in accordance with
MSS SP-6. The raised face is included in the minimum
flange thickness and center-to-face dimension.
7.3 Center-to-Face Dimensions
7.3.1 Side OutLet Fittings. Side outlet elbows, side outlet tees, and side outlet crosses shall have all openings on intersecting centerlines. Long-radius elbows with side outlet shall have the side outlet on the radial centerline of the elbow.
7.3.2 Etbows
(a) The center-to-face dimensions for straight-size 90- deg elbows, 90-deg long-radius elbows, 45-deg elbows, side-outlet 90-deg elbows, and double-branch elbows are shown in Tables 7.3.2-1 through 7.3.2-5.
(b) Reducing 90-deg elbows, reducing 90-deg long. radius elbows, reducing side-outlet 90-deg elbows, and reducing double-branch elbows shall have the same center-to-face dimensions as straight-size fittings shown in Tables 7.3.2-1 through 7.3.2-3 corresponding to the size of the largest opening.
(c) For 90-deg long-radius elbows with side outlet, the center-to-face dimensions of the side outlet shall be the same as dimension A in Tables 7.32-1 through 7.3.2.3 bra straight-size 90-deg elbow corresponding to the size of the largest opening.
(d) Special-degree elbows ranging from I deg to 45 deg, Inclusive, shall have the same center-to-face dimensions as those for 45-deg elbows; those over 45 deg and up to 90 deg, inclusive, shall have the same center-to-face dimensions as those for 90-deg elbows. The angle designation of an elbow is the angle between the flange faces.
7.3.3 Tees, Crosses, and LateraLs
(a) The center-to-face dimensions for straight-size tees and crosses, with or without side outlet, and laterals are shown in Tables 7.3.2-1 through 7.3.2-3.
(b) Reducing tees and reducing crosses, with or without side outlet, and reducing laterals, NPS 16 and smaller, shall have the same center-to-face dimensions as straight-size fittings shown in Tables 7.3.2-1 through 7.3.2-3 corresponding to the size of the largest opening. For NPS 18 and larger, if the outlet of a reducing tee; the branch of a reducing lateral; or the largest outlet of a reducing side outlet tee, reducing cross, and reducing side outlet cross is the same size or smaller than given in Tables 7.3.2-1 through 7.3.2-3 (short-body pattern), the center-to-face dimensions shown in these Tables shall be used. If a branch or any outlet is larger than shown in Tables 7.3.2-1 through 7.3.2-3, the center-to- face dimensions shall be the same as for the straight- size fitting shown in Tables 7.3.2-1 through 7.3.2-3 corresponding to the size of the largest opening. Tees, crosses, and laterals, reducing on the run only, shall have the same center-to-face dimensions as straight-size fittings shown in Tables 7.3.2-1 through 7.3.2-3 corresponding to the size of the largest opening.ASME B16.1 pdf download.
