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~ill!'i A 999;A 999Mi2.2 Forged and Bored, Cast, and Cast Cold-~Vr(]ught-If

specific Clit lengths are ordered, no length of pipe shall beunder the length specified or more than 1/8 in. [3 mm] over thatspecified.

12.3 For pipe ordered to random lengths~ the lengths andvariations shall he agreed upon het\J/cen the ma.nufacturer andpurchaser.

12A No girth weids are pennitted uniess agreed upon by themanufacturer ana purchaser.

13.. Standard ,X/eight (,x/eight per Unit Length)i 5.1 A system of standard pipe sizes has been approved by

the American l~atiGnal Standards Institute as Ai~SI B36.10 andB36.19. The standard sizes do not prorJ.bit the production ariduse of other sizes of pipe produced to the various productspecifications referenced in 1.1. (See ~Jote 3.)

13.2 For nonstandard sizes of pipe" the calculated \veightper foot shall be determined from the follo\Jling equation:

9. Pe.-Iuissibie Variations in \Vali Thickness9.i Sean'liess and Welded-Except as noted in 9.1.i~ the

nUIllmUm waH thick_lless at any point shaH not be more than12.5 % under the nominal waH thickness specIfied. The num-mum waH thickness on inspection is shown in Tabie XL L

9. i.l Lv1uu;;uun vYali- vV' neil the wan tillCKness or tne pipeis specified as ililrJ1ffiUm wall in the purchase order, there shallbe no variation under the specified "vall thickness.

9.2 l,-'orged and Bored-The vva!! thickness shall not vaI"jover that specified by more than Vs in. [3.2 mm]. There shall beno variation under the specified \,:lJall tl'-JcY",_ness.

9.3 Cast-The waH thickness shaH not vary over thatspecified by more than '116 in, [L6 nun), There shall be novariation under the specIfied waH thIckness.

Hi. Permissibie Variations in inside Diameter10.1 ,:I;'orged and Bored, and Cast-The inside diameter

shall not vary under that specified by more than 1/15 in. [!.6mm]. fhere shall be no va..riation over the specified insidediameter.

r

~~~ A 999fA 999M

flattening shall be continued until the specimen breaks VI theopposite \'valls of the pipe meet.

being \:velded. Defects shaH be thoroughly cr:.ipped or groundout before \velding and each repaired length shaH be reheattreated or stress relieved as required hy the applicahle specifi-cation. Each length of repaired pipe shaH be nondestructivelytested as required by the product specification.

16.2 Repair welding shall be performed using proceduresand \velders or \x;elding operators that have been qualified inaccordance \vith the .A..~MH Boiler and Pressure Vessel Code,Section LX.

e deformation per unit length (constant for a given gradeof steel, 0.07 for Iuedh.ul1 carbon steel (ulaximui11specified carbon 0.19 % or greater), 0.08 fer feH~ticalloy steel, 000 for austenitic steel, and. 0.09 forlo\v=carbon steel (maximum specified carbon 0.180/0or less.

During the second step~ \vhich is a test for soundness. the

17. Retests17. i if the results Oi {fie Certification tests of any lot do not

conform to the requirenlents specified in the individual speci-fication. retests filay be made on additional lengths of pipe ofdouble the original number from the same Jot. each of \vhichshall conform to the requirements specified. Only one retest of:lOV lot \-"Jlll he nermlttec"L Nonconfom1:1nce \.vlll he for----,j --- ----- -- r--------- - ------------------ -.--- -- ------ ---

the rejection of the lot.! 7.1 .A.ny individual length of pIpe that meets the test

requiren1ents is acceptable. Individual lengths that do notconfornl to the lest requirements rnay be resubmitted for testpro\'ided the reason for nonconformance is established and thenonconforming portion removed.

is. Retreatmenti 8. i if individuai lengths of pipe selected to repiesent any

lot fail to confonn to the test requirernent~, the lot r~pr~sentedrnay he reheat treated and resubrnitted for test. The rnanufac~!ur~r rnay reheat treat the pipe. but not more than tV.lice. t?xcept\vith th~ approval of the purchaser.

20.2 Weided Pipe-A section of weioed pipe not iess than 4in. fiDO mm] in iength shaH be fianened cold between paraHelpiates in two steps. The weld shaH be placed at 900 from thedirection of the applied force (at the point of maximumbending). During the first step, which is a test for ductility~ no

1 I 1 .1" I 11" .craCKS or oreaKS on (fie inSiOC or OU[SiOe sunaces, except asprovHlcd for in 20.3.4, shall occur until the distance bet\veenthe plates is less than the value of Ii calculated by Eq 2. Duringthe second step, which is a test for soundncs::;, the flatteningshall be continued until the Spel.'lHien breaks or the oppositewalls of the pipe Hleet.

20.3 Seamiess, CentrifugaUy Cast, and Weided Pipe:20.3.! Evidence of laminated or defective material or \ve!d

that is revealed at any time during the entire flattening test shaHbe cause for rejection.

20.3.2 Surface imperfections not evident in the test specI-men before flattening, but revealed during the first step offlattening test, shaH be judged in accordance \~/ith the firrishrequIrements.

20.1.) Superficial ruptures resulting from surface imperfec-lions shaH not be a cause for rejection.

19.. Test Specimens

i 9. j Tc:st spc:cHnens shaH be taken from the ends ot finIshedpipe prior to any fom-ling operations. or being cut to iength.

j 9~2 Specimens cut either iongitudinaiiyshail be acceptabie for the tension test

or

20."\.4 When low D-to-t ratio tubular products are tested,because the strain imposed due to geometry IS unreasonablyhIgh on the inside surface at the six and twelve o'clockiocations. cracks at these locations shall not be cause forreJeciloll if the U-io-i ratio is jess than lU.

20. i"iattening Test Requirements

19.3 If any test specimen ShO\liS fla\1/s or defective machin-Ing. the specimen may be discarded and another substituted.

20. i .)canlic.,'5; and Lellirijugai(V Cast Pipe-A sectIon ofpipe not less than 2 1/2 in. [63 mm} in length shall be flattenedcold bet\veen parallel plates in two steps. During the first step..\vhich is a test for ductility, no cracks or breaks on the inside,outside~ or end surfaces .. except as prov'ided for in 20.3.4. shanoccur until the distance bet\veen the plates is less than the valueot H calculated as fol!ov/s:

where:

(3)P = 2St!D or 5 = PD!2t

\-vhere:P = hydrostatic test pressure In psi [~?1Pa]~S pipe waH stress in psi or [MPal,

2 i.2 Hvdrosiaiic Tesi:~!.2.! t.xcept as provided In LLl.L and 21.2.3. each length

of pipe shaH be tested by the manufacturer to a hydrostaticpressure which wiii produce in the pipe wan a stress not iessthan 60 % of the minimum specified yieid strength for ferriticaHoy and srainiess steei pipe, or 50 % of the specified mini-mum yield strength for austenjtic aHoy and stainless steei pipeami tor femltc/austemtlc stamiess steel pipe. The test pressureor stress shaH be determined by the foHowing equation:

21. i \Vhen required by the applicabie product specificationor the purchase order, the pipe shall be tested by the hydrostatictest {see 21.2) or by the nondestructive electrical test (see/1 1\- I. .~_, /.

2i. Nondestructive T~st Requirements

(2)ii = (i+t.')tf(e+uV)

distance betv..'een flattt:ning plates, in. [n'lml,specified wall thicki,ess, in. [mill],specified outside djameter; outside diameter corre-sponding to specified ANSI pIpe size; or outsidediameter cakuiated bv adding 2t (as defined above) tothe specified insIde diameter in. [mm], and

tD

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Copyright by the ASTM InternationalSat Feb 02 10:13:09 2008