ASME B16.1:2005 pdf free download

ASME B16.1:2005 pdf free download.Gray lron Pipe Flanges and Flanged Fittings.
1.2 References
Standards and specifications adopted by reference in this Standard are shown in Appendix II, which is part of this Standard. It is not considered practical to identify the specific edition of each referenced standard and specification in the text, when referenced. Instead, the specific editions of the referenced standards and specifications are listed in Appendix II.
1.3 Quality Systems
Requirements relating to the product manufacturer’s Quality System Programs are described in Appendix A.
1.4 Relevant Units
This Standard states values in both SI and U.S. Customary units. As an exception, diameter of bolts and flange bolt holes are expressed in inch units only. These systems of units are to be regarded separateI Within the text, the U.S. Customary units are shown in parenthesis or in separate tables. The values stated in each table are not exact equivalents; therefore it is required that each system of units be used independently of the other. Except for diameter of bolts and flange bolt holes, corn. hining values from the two systems constitutes nonconformance with the standard.
1.5 Service Conditions
Criteria for selection of materials suitable for particular fluid service are not within the scope of this Standard.
1.6 Convention
For the purpose of determining conformance with this Standard, the convention for fixing significant digits where limits, maximum and minimum values are sped- fled, shall be rounded as defined in ASTM E 29.
6.2 Facing
(a) Classes 25 and 125 gray iron flanges and flanged fillings 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 6 and finished in accordance with MSS SP-6. The raised face is included in the minimum flange thickness and center-to-face dimension.
6.3 center-to-Face Dimensions
6.3.1 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.
6.3.2 Elbows
(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 3, 5, and 7.
(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 3, 5, and 7 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 3, 5, and 7 for a straight-size 90 deg elbow corresponding to the size of the largest opening.
(d) Special-degree elbows ranging from 1 deg to 45 deg, inclusive, shall have the same center-to-face dimensions as those for 45 deg elbows; those over 45 dcg 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.
6.3.3 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 3, 5, and 7.
(b) Reducing tees and reducing crosse , 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 3,5, and 7corres- ponding 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 3,5, and 7 (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 3, 5, and 7.