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  • Tolerance-of-butt-welding-fittings-ASME-B16.9

    Tolerance-of-butt-welding-fittings-ANSI/ASME-B16.9

    Tolerance-of-butt-welding-fittings-ASME-B16-9

    Tolerance-of-butt-welding-fittings-ASME-B16-9

    All Fittings[Note(1) and (2)]
    Center-to-End Diamensions
    Overall Length of Reducers and Lap Joint Stub Ends,F,H
    Overall Length of Caps, E
    180-deg Returns
    Nominal  Pipe Size(NPS)
    DN
    Outside Diameter at Bevel,D[Note(3) and (4)]
    Inside Diameter at End [Note(3) and (5)]
    90-deg and 45-deg Long and Short Radius Elbows and Tees. A,B,C,M
    3D Radius Elbows, A,B
    Center-to-Center Dimension, O
    Back-to-Face Demensoin, K
    Alignment of Ends, U
     1/2to2 1/2
    15-65
     +1.6-0.8
    0.8
    2
    3
    2
    3
    6
    6
    1
    3to3 1/2
    80-90
    1.6
    1.6
    2
    3
    2
    3
    6
    6
    1
    4
    100
    1.6
    1.6
    2
    3
    2
    3
    6
    6
    1
    5to8
    125-200
     +2.4 -1.6
    1.6
    2
    3
    2
    6
    6
    6
    1
    10to18
    250-450
     +4.0 -3.2
    3.2
    2
    3
    2
    6
    10
    6
    2
    20to24
    500-600
     +6.4 -4.8
    4.8
    2
    3
    2
    6
    10
    6
    2
    26to30
    650-750
     +6.4 -4.8
    4.8
    3
    6
    5
    10
    32to48
    800-1200
     +6.4 -4.8
    4.8
    5
    6
    5
    10
    All Fittings[Note(1) and (2)]
    Center-to-End Diamensions
    Nominal Pipe Size(NPS)
    DN
    Angularity Tolerance
    Nominal  Pipe Size(NPS)
    DN
    Outside Diameter at Bevel,D[Note(3) and (4)]
    Inside Diameter at End [Note(3) and (5)]
    Outside Diameter of Lap,G
    Fillet Radius of Lap,R
    Lap Thickness
    Off Angle,Q
    Off Plane,P
     1/2to2 1/2
    15-65
     +1.6-0.8
    0.8
    +0,-1
    +0,-1
    +1.6,-0
    1/2to4
    15-100
    1
    2
    3to3 1/2
    80-90
    1.6
    1.6
    +0,-1
    +0,-1
    +1.6,-0
    5to8
    125-200
    2
    4
    4
    100
    1.6
    1.6
    +0,-1
    +0,-2
    +1.6,-0
    10to12
    250-300
    3
    5
    5to8
    125-200
     +2.4 -1.6
    1.6
    +0,-1
    +0,-2
    +1.6,-0
    14to16
    350-400
    3
    6
    10to18
    250-450
     +4.0 -3.2
    3.2
    +0,-2
    +0,-2
    +3.2,-0
    18to24
    450-600
    4
    `10
    20to24
    500-600
     +6.4 -4.8
    4.8
    +0,-2
    +0,-2
    +3.2,-0
    26to30
    650-750
    5
    10
    26to30
    650-750
     +6.4 -4.8
    4.8
    32to42
    800-1050
    5
    13
    32to48
    800-1200
     +6.4 -4.8
    4.8
    44to48
    1100-1200
    5
    19
    GENERAL NOTES:









    (a)All dimensions are in mm.








    (b)Tolerances are equal plus and minus except as noted.






    NOTES:










    (1)The inside diameter and the nominal wall thickness at ends are to be specified by the purchaser.



    (2)A minimum wall thickness of 87.5% applies unless the purchaser specifies a different wall thickness toletance.


    (3)Out-of-round is the sum of absolute values of plus and minus tolerances.





    Download the PDF file: Tolerance-of-butt-welding-fittings-ASME-B16.9 .

    Tolerance-of-butt-welding-fittings-ASME-B16-9.pdf