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<br /> A53/A53M - 12
<br /> 9.2.4.1 Drilled Hole-The calibration pipe shall contain 9.2.7 The test methods described in Section 9 are not
<br /> three holes spaced 120° apart or four holes spaced 90° apart. necessarily capable of inspecting the end portion of pipes.This
<br /> sufficiently separated longitudinally to ensure separately dis- condition is referred to as end effect. The length of the end
<br /> tinguishable responses.The holes shall be drilled radially and effect shall be determined by the manufacturer and,if specified
<br /> completely through the pipe wall, care being taken to avoid in the purchase order, reported to the purchaser.
<br /> distortion of the pipe while drilling. Dependent upon the
<br /> nominal pipe size, the calibration pipe shall contain the 10. Permissible Variations in Weight (Mass) and
<br /> following hole: Dimensions
<br /> NPs DN Diameter of Drilled Hole 10.1 Weight (Mass)-The weight (mass) of the pipe shall
<br /> s v: s 15 0.039 in.[1.0 mm] not vary more than± 10%from its specified weight(mass),as
<br /> >th s I1 >15:s 32 0.055 in.11.4 mml derived by multiplying its measured length by its specified
<br /> >11/4:s 2 >32 6 50 0.071 in.[1.8 mm]
<br /> >2 s 5 >50 s 125 0.087 in.(2.2 mm) weight(mass)per unit length,as given in Table X2.2 or Table
<br /> >5 >125 0.106 in.[2.7 mm] X2.3, or as calculated using the relevant equation in ASME
<br /> 9.2.4.2 Transverse Tangential Notch-Using a round tool or B36.10M.
<br /> file with a 1/4 in. [6 rnm] diameter, a notch shall be filed or NoTE 6-For pipe NPS 4 [DN 100] or smaller, the weight (mass)
<br /> milled tangential to the surface and transverse to the longitu- tolerance is applicable to the weights (masses)of the customary lifts of
<br /> dinal axis of the pipe. The notch shall have a depth not pipe as produced for shipment by the mill.For pipe larger than NPS 4[DN
<br /> exceeding 12.5%of the specified wall thickness of the pipe or 100],where individual lengths are weighed,the weight(mass)tolerance is
<br /> 0.012 in. [0.3 mrn], whichever is the greater. applicable to the individual lengths.
<br /> 9.2.4.3 Longitudinal Notch-A notch 0.031 in. [0.8 mm] or 10.2 Diameter-For pipe NPS 11/2 [DN 40] or smaller, the
<br /> less in width shall be machined in a radial plane parallel to the outside diameter at any point shall not vary more than ± '/64 in.
<br /> pipe axis on the outside surface of the pipe, to a depth not [0.4 mm] from the specified outside diameter. For pipe NPS 2
<br /> exceeding 12.5%of the specified wall thickness of the pipe or [DN 50] or larger, the outside diameter shall not vary more
<br /> 0.012 in. [0.3 mm],whichever is the greater.The length of the than ± 1 % from the specified outside diameter.
<br /> notch shall be compatible with the testing method. 10.3 Thickness-The minimum wall thickness at any point
<br /> 9.2.4.4 Compatibility-The calibration standards in the cali- shall be not more than 12.5 % under the specified wall
<br /> bration pipe shall be compatible with the testing equipment and thickness. The minimum wall thickness on inspection shall
<br /> the method being used. conform to the requirements given in Table X2.4.
<br /> 9.2.5 For flux leakage testing, the longitudinal calibration 11. End Finish
<br /> reference notches shall be straight-sided notches machined in a
<br /> radial plane parallel to the pipe axis. For specified wall I 1.1 If ordered with plain ends, the pipe shall be furnished
<br /> thicknesses less than 0.500 in. [12.7 mm], outside and inside to the following practice, unless otherwise specified.
<br /> notches shall be used.For specified wall thicknesses equal to or 11.1.1 NPS 1'h [DN 40] or Smaller=Unless otherwise
<br /> greater than 0.500 in. [12.7 mm],only an outside notch shall be specified in the purchase order,end finish shall be at the option
<br /> used.The notch depth shall not exceed 12.5%of the specified of the manufacturer.
<br /> wall thickness,or 0.012 in. [0.3 mm],whichever is the greater. 11.1.2 Larger than NPS P12 [DN 40]:
<br /> The notch length shall not exceed 1 in. [25 mm],and the notch 11.1.2.1 Pipe of standard weight or extra-strong weight, or
<br /> width shall not exceed the notch depth. Outside diarneter and in wall thickness less than 0.500 in. [12.7 mm), other than
<br /> inside diameter notches shall be located sufficiently apart to double extra-strong weight pipe, shall be plain-end beveled
<br /> allow separation and identification of the signals, with ends beveled to an angle of 30°. +5°,-0°, measured from
<br /> 9.2.6 Pipe containing one or more imperfections that ro- a line drawn perpendicular to the axis of the pipe, and with a
<br /> duce a signal equal to or greater than the signal produced by the root face of '/16 in. ± V32 in. [1.6 mm ± 0.8 mtnJ.
<br /> calibration standard shall be rejected or the area producing the 11.1.2.2 Pipe with a specified wall thickness greater than
<br /> signal shall be rejected. 0.500 in. [12.7 mm], and all double extra-strong weight pipe,
<br /> shall be plain-end square cut.
<br /> 9.2.6.1 Test signals produced by imperfections that cannot
<br /> be identified, or produced by cracks or crack-like imperfec- 11.2 If ordered with threaded ends, the pipe ends shall be
<br /> tions, shall result in rejection of the pipe, unless it is repaired provided with a thread in accordance with the gaging practice
<br /> and retested. To be accepted, the pipe shall pass the same and tolerances of ANSI B 1.20.1.For standard-weight pipe NPS
<br /> specification test to which it was originally subjected and the 6 [DN 1501 or smaller, refer to Table X3.1 for threading data.
<br /> remaining wall thickness shall not have been decreased below For standard-weight pipe NPS 8 [DN 200] or larger and all
<br /> that permitted by the specification. It shall be permissible to sizes of extra-strong weight pipe and double extra-strong
<br /> reduce the outside diameter at the point of grinding by the weight pipe, refer to Table X3.2 for threading data. Threaded
<br /> amount so removed. pipe NPS 4 [DN 100] or larger shall have thread protectors on
<br /> 9.2.6.2 It shall be permissible to evaluate test signals pro- the ends not protected by a coupling.
<br /> duced by visual imperfections in accordance with the provi- 11.3 if ordered with couplings, one end of each length of
<br /> sions of Section 12.A few examples of such imperfections are pipe shall be provided with a coupling manufactured in
<br /> straightener marks, cutting chips, scratches, steel die stamps, accordance with Specification A865. The coupling threads
<br /> stop marks, or pipe reducer ripple. shall be in accordance with the gaging practice of ANSI
<br /> Copyright by ASTM Int'I(all rights reserved);Tue Nov 6 09:27:19 EST 2012 6
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