ASME B16.11:2001 pdf free download.FORGED FITTINGS,SOCKET WELDING AND THREADED.
4.1.2 Omission of Markings. Where size and shape of fittings do 1101 permit all of the above markings, they may be omitted in the reverse order given above.
5 MATERIAL
5.1 Standard Materials
The material for fittings shall consist of forgings, bars, seamless pipe, or tubular products which conform to the requirements for melting process, chemical composition requirements, and mechanical properly requirements of the forging product form listed in Table 1, ASME B16.34, including notes.
6 DIMENSIONS
6.1 General
Unless otherwise noted, the dimensions for socket- welding fittings given in Tables 4 and Ii and the dimensions for threaded fittings given in Tables 5, 6, 7, 12. 13, and 14 are nominal values and subject to the designated manufacturing tolerance.
6.2 Socket Fittings
6.2.1 Body Wall Thickness. The body wall thickness of socket-welding fittings shall be equal to or greater than the values, G, shown in Tables 4 and Ii.
6.2.2 Socket Wafl Thickness. The socket wall average thickness and minimum thickness shall be no less than the corresponding values, C, shown in Tables 4 and II.
6.2.3 Socket Position. The fixed position for the bouom of the socket with reference to the centerline of the socket-welding fitting shall he maintained as required by the dimensions. A, of Tables 4 and 11. For reducing fittings, see para. 6.5.
6.2.4 Socket Depth. The socket depth shall be no less than the minimum values, J, shown in Tables 4 and II.
6.2.5 Socket Bore. The inside surface of the socket bore shall present a good workmanlike finish that is free of burrs.
6.2.6 Perpendicularity. The end flats of socket- welding fittings shall be at right angles to the socket axis.
6.2.7 Width. The forging radius shall not reduce the width of the flat welding surface to less than the value shown in Fig. 2.
6.3 Threaded Fittings
6.3.1 Wall Thickness. The body or end wall thickness of threaded fittings shall be equal to or greater than the minimum values, G, as shown in Tables 5, 6, 12, or 13.
6.3.2 lnternalThreading. All fittings with internal threads shall be threaded with American National Standard Taper Pipe Threads (ASME Bl.20.l). Variations in threading shall be limited to one turn large or one turn small from the gaging notch when using working gages. The reference point for gaging is the starting end of the fitting, providing the chamfer does not exceed the major diameter of the internal thread. When a chamfer on the internal thread exceeds this limit, the reference point becomes the last thread scratch on the chamfer cone.
6.3.3 External Threads. All externally threaded fittings shall be threaded with American National Standard Taper Pipe Threads (ASME B 1.20.1) and the variation in threading shall be limited to one turn large or one turn small from the gage face of ring when using working gages. The reference point for gaging is the end of the thread.
6.3.4 Countersink or Chamfer. All internal threads shall be countersunk a distance not less than one- half the pitch of the thread at an angle of approximately 45 deg with the axis of the thread, and all external threads shall be chamfered at an angle of 3Odeg to 45 deg from the axis, for the purpose of easier entrance in making a joint and for protection of the thread, Countersinking and chamfering shall be concentric with the threads. The length of threads specified in all tables shall be measured to include the countersink or chamfer.
ASME B16.11:2001 pdf free download
