American Piping Products | Steel Pipe Supply



API5L 45th Edition Specification for Line PipeScopeSpecified the manufacture of two product levels (PSL1 and PSL2) of seamless and welded steel pipe for the use of a pipeline in the transportation of petroleum and natural gas. For material use in a Sour service application refer to Annex H and for offshore service application refer to Annex J of API5L 45th.Delivery ConditionPSLDelivery ConditionPipe gradePSL1As-rolled, normalized, normalizing formedAAs-rolled, normalizing rolled, thermomechanical rolled, thermo-mechanical formed, normalizing formed, normalized, normalized and tempered or if agreed Q&T SMLS onlyBAs-rolled, normalizing rolled, thermomechanical rolled, thermo-mechanical formed, normalizing formed, normalized, normalized and temperedX42, X46, X52, X56, X60, X65, X70PSL 2As-rolledBR, X42RNormalizing rolled, normalizing formed, normalized or normalized and temperedBN, X42N, X46N, X52N, X56N, X60NQuenched and temperedBQ, X42Q, X46Q, X56Q, X60Q, X65Q, X70Q, X80Q, X90Q, X100QThermomechanical rolled or thermomechanical formedBM, X42M, X46M, X56M, X60M, X65M, X70M, X80MThermomechanical rolledX90M, X100M, X120MThe suffice (R, N, Q or M) for PSL2 grades, belongs to the steel gradeOrdering InformationThe purchase order shall include the quantity, PSL level, type or Grade, reference to API5L, outside diameter, wall thickness, length and any applicable annexes or additional requirements related to chemical composition, mechanical properties, heat treatment, additional testing, manufacturing process, surface coatings or end finish.Typical process of manufacturingType of PipePSL 1PSL 2Grade AGrade BX42 to X70B to X80X80 to X100SMLSLFWHFWLWSAWLSAWHSMLS – Seamless, without weldLFW – Low frequency welded pipe, <70 kHzHFW – High frequency welded pipe, >70 kHzSAWL – Submerge-arc welding longitudinal weldedSAWH - Submerge-arc welding helical weldedStarting MaterialIngots, blooms, billets, coils or plates used for the manufacture of pipe shall be made by the following processes, basic oxygen, electric furnace or open hearth in combination with a ladle refining process. For PSL2, the steel shall be killed and melted according to a fine grain practice. Coil or plate used for PSL2 pipe shall not contain any repair welds.Chemical Composition for PSL 1 pipe with t ≤ 0.984”Steel GradeMass fraction, % based on heat and product analyses a,gCmax bMnmax bPmaxSmaxVmaxNbmaxTimaxSeamless PipeA0.220.900.300.30---B0.281.200.300.30c,dc,ddX420.281.300.300.30dddX460.281.400.300.30dddX520.281.400.300.30dddX560.281.400.300.30dddX600.28 e1.40 e0.300.30fffX650.28 e1.40 e0.300.30fffX700.28 e1.40 e0.300.30fffWelded PipeA0.220.900.300.30---B0.261.20.300.30c,dc,ddX420.261.30.300.30dddX460.261.40.300.30dddX520.261.40.300.30dddX560.26 1.40.300.30dddX600.26 e1.40 e0.300.30fffX650.26 e1.45 e0.300.30fffX700.26e1.65 e0.300.30fffCu ≤ = 0.50% Ni; ≤ 0.50%; Cr ≤ 0.50%; and Mo ≤ 0.15%For each reduction of 0.01% below the specified max. concentration for carbon, and increase of 0.05% above the specified max. concentration for Mn is permissible, up to a max. of 1.65% for grades ≥ B, but ≤ = X52; up to a max. of 1.75% for grades > X52, but < X70; and up to a maximum of 2.00% for X70.Unless otherwise agreed NB + V ≤ 0.06%Nb + V + TI ≤ 0.15%Unless otherwise agreed.Unless otherwise agreed, NB + V = Ti ≤ 0.15%No deliberate addition of B is permitted and the residual B ≤ 0.001%Chemical Composition for PSL 2 pipe with t ≤ 0.984”Steel GradeMass fraction, % based on heat and product analysesCarbon Equiv aCmax bSimaxMnmax bPmaxSmaxVmaxNbmaxTimaxOtherCE IIWmaxCE PcmmaxSeamless and Welded PipeBR0.240.401.200.0250.015cc0.04e,l.0430.25X42R0.240.401.200.0250.0150.060.050.04e,l.0430.25BN0.240.401.200.0250.015cc0.04e,l.0430.25X42N0.240.401.200.0250.0150.060.050.04e,l.0430.25X46N0.240.401.400.0250.0150.070.050.04d,e,l.0430.25X52N0.240.451.400.0250.0150.100.050.04d,e,l.0430.25X56N0.240.451.400.0250.0150.10f0.050.04d,e,l.0430.25X60N0.24f0.45f1.40f0.0250.0150.10f0.05f0.04fg,h,lAs agreedBQ0.180.451.400.0250.0150.050.050.04e,l.0430.25X42Q0.180.451.400.0250.0150.050.050.04e,l.0430.25X46Q0.180.451.400.0250.0150.050.050.04e,l.0430.25X52Q0.180.451.500.0250.0150.050.050.04e,l.0430.25X56Q0.180.45f1.500.0250.0150.070.050.04e,l.0430.25X60Q0.18f0.45f1.70f0.0250.015gggh,l.0430.25X65Q0.18f0.45f1.70f0.0250.015gggh,l.0430.25X70Q0.18f0.45f1.80f0.0250.015gggh,l.0430.25X80Q0.18f0.45f1.90f0.0250.015gggi,jAs agreedX90Q0.16f0.45f1.900.0200.010gggj,kAs agreedX100Q0.16f0.45f1.900.0200.010gggj,kAs agreedWelded PipeBM0.220.451.200.0250.0150.050.050.04e,l.0430.25X42M0.220.451.300.0250.0150.050.050.04e,l.0430.25X46M0.220.451.300.0250.0150.050.050.04e,l.0430.25X52M0.220.451.400.0250.015ddde,l.0430.25X56M0.220.45f1.400.0250.015ddde,l.0430.25X60M0.12f0.45f1.60f0.0250.015gggh,l.0430.25X65M0.12f0.45f1.60f0.0250.015gggh,l.0430.25X70M0.12f0.45f1.70f0.0250.015gggh,l.0430.25X80M0.12f0.45f1.85f0.0250.015gggi,j.043f0.25X90M0.100.55f2.10f0.0200.010gggi,j-0.25X100M0.100.55f2.10f0.0200.010gggi,j-0.25SMLS t>0.787”, CE limits shall be as agreed. The CEIIW limits applied fi C > 0.12% and the CEPcm limits apply if C ≤ 0.12%For each reduction of 0.01% below the specified max. concentration for carbon, and increase of 0.05% above the specified max. concentration for Mn is permissible, up to a max. of 1.65% for grades ≥ B, but ≤ = X52; up to a max. of 1.75% for grades > X52, but < X70; and up to a maximum of 2.00% for X70.Unless otherwise agreed Nb = V ≤ 0.06%Nb = V = Ti ≤ 0.15%Unless otherwise agreed, Cu ≤ 0.50%; Ni ≤ 0.30% Cr ≤ 0.30% and Mo ≤ 0.15%Unless otherwise agreedUnless otherwise agreed, Nb + V + Ti ≤ 0.15%Unless otherwise agreed, Cu ≤ 0.50% Ni ≤ 0.50% Cr ≤ 0.50% and MO ≤ 0.50%Unless otherwise agreed, Cu ≤ 0.50% Ni ≤ 1.00% Cr ≤ 0.50% and MO ≤ 0.50%B ≤ 0.004%Unless otherwise agreed, Cu ≤ 0.50% Ni ≤ 1.00% Cr ≤ 0.55% and MO ≤ 0.80%For all PSL 2 pipe grades except those grades with footnotes j noted, the following applies. Unless otherwise agreed no intentional addition of B is permitted and residual B ≤ 0.001% .Tensile and Yield – PSL1 and PSL2Pipe GradeTensile Properties - Pipe Body of SMLS and Welded Pipes PSL 1Seam of Welded PipeYield Strength aRt0,5 PSI MinTensile Strength aRm PSI MinElongation(in 2in Af % min)Tensile Strength bRm PSI MinA30,50048,600c48,600B35,50060,200c60,200X4242,10060,200c60,200X4646,40063,100c63,100X5252,20066,700c66,700X5656,60071,100c71,100X6060,20075,400c75,400X6565,30077,500c77,500X7070,30082,700c82,700a. For intermediate grade, the difference between the specified minimum tensile strength and the specified minimum yield for the pipe body shall be as given for the next higher grade.b. For the intermediate grades, the specified minimum tensile strength for the weld seam shall be the same as determined for the body using foot note a.c. The specified minimum elongation, Af, expressed in percent and rounded to the nearest percent, shall be determined using the following equation: Af=C AxC0,2?0,9 Where C is 1 940 for calculation using Si units and 625 000 for calculation using USC unitsAxc is the applicable tensile test piece cross-sectional area, expressed in square millimeters (square inches) , as followsFor circular cross-section test pieces, 130mm2 (0.20 in2) for 12.7 mm (0.500 in) and 8.9 mm (.350 in) diameter test pieces; and 65 mm2 (0.10 in2) for 6.4 mm (0.250in) diameter test pieces.For full-section test pieces, the lesser of a) 485 mm2 (0.75 in2) and b) the cross-sectional area of the test piece, derived using the specified outside diameter and the specified wall thickness of the pipe, rounded to the nearest 10 mm2 (0.10in2)For strip test pieces, the lesser of a) 485 mm2 (0.75 in2) and b) the cross-sectional area of the test piece, derived using the specified width of the test piece and the specified wall thickness of the pipe, rounded to the nearest 10 mm2 (0.10in2)U is the specified minimum tensile strength, expressed in megapascals (pounds per square inch)Pipe GradeTensile Properties - Pipe Body of SMLS and Welded Pipes PSL 2Seam of Welded PipeYield Strength aRt0,5 PSI MinTensile Strength aRm PSI MinRatio a,cR10,5IRmElongation(in 2in)Af %Tensile Strength dRm (psi)MinimumMaximumMinimumMaximumMaximumMinimumMinimumBR, BN,BQ,BM35,50065,30060,20095,0000.93f60,200X42,X42R,X2Q,X42M42,10071,80060,20095,0000.93f60,200X46N,X46Q,X46M46,40076,10063,10095,0000.93f63,100X52N,X52Q,X52M52,20076,90066,700110,2000.93f66,700X56N,X56Q,X56M56,60079,00071,100110,2000.93f71,100X60N,X60Q,S60M60,20081,90075,400110,2000.93f75,400X65Q,X65M65,30087,00077,600110,2000.93f76,600X70Q,X65M70,30092,10082,700110,2000.93f82,700X80Q,X80M80,.500102,30090,600119,7000.93f90,600a. For intermediate grade, refer to the full API5L specification.b. for grades > X90 refer to the full API5L specification.c. This limit applies for pies with D> 12.750 ind. For intermediate grades, the specified minimum tensile strength for the weld seam shall be the same value as was determined for the pipe body using foot a.e. for pipe requiring longitudinal testing, the maximum yield strength shall be ≤ 71,800 psif. The specified minimum elongation, Af, expressed in percent and rounded to the nearest percent, shall be determined using the following equation: Af=C AxC0,2?0,9 Where C is 1 940 for calculation using Si units and 625 000 for calculation using USC units Axc is the applicable tensile test piece cross-sectional area, expressed in square millimeters (square inches) , as followsFor circular cross-section test pieces, 130mm2 (0.20 in2) for 12.7 mm (0.500 in) and 8.9 mm (.350 in) diameter test pieces; and 65 mm2 (0.10 in2) for 6.4 mm (0.250in) diameter test pieces.For full-section test pieces, the lesser of a) 485 mm2 (0.75 in2) and b) the cross-sectional area of the test piece, derived using the specified outside diameter and the specified wall thickness of the pipe, rounded to the nearest 10 mm2 (0.10in2)For strip test pieces, the lesser of a) 485 mm2 (0.75 in2) and b) the cross-sectional area of the test piece, derived using the specified width of the test piece and the specified wall thickness of the pipe, rounded to the nearest 10 mm2 (0.10in2) U is the specified minimum tensile strength, expressed in megapascals (pounds per square inchg. Lower values fo R10,5IRm may be specified by agreementh. for grades > x90 refer to the full API5L specification.Hydrostatic Test Pipe to withstand a hydrostatic test without leakage through the weld seam or the pipe body. Jointers need not be hydrostatic tested provide the pipe sections used were successfully tested.Bend TestNo cracks shall occur in any portion of the test piece and not opening of the weld shall occur.Flattening TestAcceptance criteria for flattening test shall beEW pipes D<12.750 in ≥ X60 with T≥0.500in, there shall be no opening of the weld before the distance between the plates is less than 66% of the original outside diameter. For all grades and wall, 50%.For pipe with a D/t > 10, there shall be no opening of the weld before the distance between the plates is less than 30% of the original outside diameter.For other sizes refer to the full API5L specificationCVN impact test for PSL2 Many PSL2 pipe sizes and grades require CVN. Seamless pipe is to be tested in the body. Welded pipe is to be tested in the Body, Pipe Weld and heat affected zone (HAZ). Refer to the full API5L specification for the chart of sizes and grades and required absorbed energy values.Tolerances Outside Diameter, Out of roundness and wall thicknessSpecified Outside Diameter D (in)Diameter Tolerance, inches dOut-of-Roundness Tolerance inPipe except the end aPipe end a,b,cPipe except the End aPipe End a,b,cSMLS PipeWelded PipeSMLS PipeWelded Pipe< 2.375-0.031 to + 0.016- 0.031 to + 0.0160.0480.036≥2.375 to 6.625+/- 0.0075D- 0.016 to + 0.0630.020D forDt≤75By agreement for Dt>750.015D forDt≤75By agreement for Dt>75>6.625 to 24.000+/- 0.0075D+/- 0.0075D, but max of 0.125+/- 0.005D, but max of 0.0630.020D0.015D>24 to 56+/- 0.01D+/- 0.005D but max of 0.160+/- 0.079+/- 0.0630.015D for but max of 0.060For Dt≤75By agreementfor Dt>750.01D for but max of 0.500For Dt≤75By agreementfor Dt>75 >56 As agreedThe pipe end includes a length of 4 in ate each of the pipe extremitiesFor SMLS pipe the tolerance apply for t≤0.984in and the tolerances for the thicker pipe shall be as agreedFor expanded pipe with D≥8.625in and for non-expanded pipe, the diameter tolerance and the out-of-roundness tolerance may be determined using the calculated inside diameter or measured inside diameter rather than the specified OD.For determining compliance to diameter tolerance, the pipe diameter is defined as the circumference of the pipe in any circumferential plane divide by Pi.Wall thicknesst inchesTolerances ainchesSMLS pipe b≤ 0.157+ 0.024 / - 0.0200.157 to < 0.948+ 0.150t / - 0.125t≥ 0.984+ 0.146 or + 0.1t, whichever is the greater - 0.120 or – 0.1t, whichever is the greaterWelded pipe c,d≤ 0.197+/- 0.020 > 0.197 to < 0.591+/- 0.1t≥ 0.591+/- 0.060If the purchase order specifies a minus tolerance for wall thickness smaller than the applicable value given in this table, the plus tolerance for wall thickness shall be increased by an amount sufficient to maintain the applicable tolerance range.For pipe with D≥ 14.000 in and t≥0.984in, the wall thickness tolerance locally may exceed the plus tolerance for wall thickness by an additional 0.05t provided that the plus tolerance for mass is not exceeded.The plus tolerance for wall thickens does not apply to the weld areaSee the full API5L spec for full details ................
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