ASME B16.01 pdf free download

ASME B16.01 pdf free download CASTIRON PIPEFLANGES ANDFLANGEDFITINBS lass88 25,125, and 250
(c) For 90 deg. long-radius elbows with side outlet,the center-to-face dimensions of the side outlet shallbe the same as dimension A in Tables 3、5,and 7 fora straight-size 90 deg. elbow corresponding to the sizeof the largest opening.
d)Special-degree elbows ranging from l deg. to45 deg.，inclusive，shall have the same center-to-facedimcnsions as those for 45 deg. elbows; those over 45deg. and up to 90 deg.，inclusive, shall have the samecenter-to-face dimensions as those for 90 deg. elbows.The angle designation of an elbow is the angle betweenthe flange faces.
6.3.3 Tees,Crosses, and Laterals
a)The center-to-face dimensions for straight-sizctees and crosses, with or without side outlet, and lateralsarc shown in Tables 3. 5, and 7.
(b) Reducing tees andreducing crosses,with orwithout sidc outlct, and reducing laterals.NPS 16 andsmaller， shall have the same center-to-face dimensionsas straight-size fittings shown in Tables 3.S、 and 7corresponding to the sizc of the largest opening. ForNPs i8 and larger. if the outlet of a reducing tee; thebranch of a reducing lateral; or the largest outlet of areducing side outlet lec, reducing cross. and reducingside outlet cross is the same size or smaller than givenin Tables 3,5.and 7 (short body pattern). the centcr-to-face dimensions shown in these Tables shall be used.If a branch or any outlet is larger than shown in Tables3.S.and 7. the center-to-face dimensions shall be thesame as for the straight-size fitting shown in Tables3.5.and 7 corresponding to the size of the largestopening. Tees.crosscs,and laterals.reducing on therun only, shall have the same center-to-face dimensionsas straight-size fittings shown in Tables 3.S，and 7corTresponding to the size of the largest opening.
(c)Tees reducing on both runs are generally knownas bull-head tees and have the same centcr-to-facedimensions as straight-size fittings corresponding to thesize of the outlet.
6.3.4 True Ys. Center-to-face dimensions forstraight-size true Ys are shown in Tables 5 and 7.Reducing sizes are considered special and should bemade to suit conditions.
6.3.5 Reducers and Eccentric Reducers.Theface-to-face dimensions for all reductions of reducersand eccentric reducers shall be the same as given inTables 5 and 7 for the largest opening.
6.4 Center-to-Face Tolerances The following tolerances shall be permitted on all center-to-contact surface dimensions of fttings: Toler- ances for contact surface-to-contact surface dimensions shall be twice those given below. The largest opening in the ftting governs the tolerance to be applied to all openings. Tolerance Nominal Plus or . Pipe Size Minus, in. 10 and smaller 0.03 12 and larger 0.06
6.5 Threaded Flanges
6.5.1 General. Flanges shall have a Standard Taper Pipe Thread in accordance with ASME B1.20.1. The thread shall be concentric with the axis of the fange, and variations in alignment shall not exceed 0.06 in./ ft. The gaging notch of working gage should come fush wit the bottom of chamfer, and the maximum allowable thread variations are one turn large or one turn small from the gaging notch.
6.5.2 Class 125. Threads shall be countersunk a distance not less than one-half of the pitch of the thread al an angle approximately 45 deg. with the axis of the thread, for the purpose of easy entrance in making the joint and protection of the threads. Counter- sinking shall be concentrie with the threads. The length of the threads shall be measured to include the coun- tersink.
6.5.3 Class 250. Hub may be recessed. When not recessed, threads shall be countersunk a distance not less than one half of the pitch of the thread al an angle approximately 45 deg. with the axis of the thread at the back of the fange. If hub is reessed, threads shall be 45 deg. countersunk to diameter of reess. The purposc is for easier entrance in making a joint and for the proteecion of the threads. Countersinking shall be concentric with the threads. The length of threads shall be measured 10 include the countersink.
6.6 Flange Bolt Holes Flange bolt holes shall be in accordance with the dimensions shown in Tables 2, 4, and 6. Pairs of bolt holes shall straddle the centerline.