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Large Diameter Spiral Welded Pipes

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Technical Specification

Chemical Composition & Mechanical Properties -API

Specification Type Grade Chemical Composition (%) Max Mechanical properties HydrostaticTest Pressure
C Mn P S Si Cr Mo Cu Ni V Yieid Strength Tensilie Strength % Elongation (G.L 50 mm WT 8 mm )
e (min)
Min Max Min Max Max Max Min Max Min Max Min Max Max Max Max Min Min Max
PSI MPa PSI MPa PSI MPa
IS 3589 E & S Fe - 330 _ 0.16 _ 1.20 0.040 0.040 _ _ _ _ _ _ _ _ _ 28,000 195 22,000 330 _ _ 20 P=2S t/D,shall not exceed 5 Mpa
S=Stress (60% of min SMYS)
Fe - 410 _ 0.20 _ 1.30 0.040 0.040 _ _ _ _ _ _ _ _ _ 34,000 235 59,500 410 _ _ 18
Fe - 450 _ 0.25 _ 1.20 0.040 0.040 _ _ _ _ _ _ _ _ _ 40,000 275 65,000 450 _ _ 15
(GL=5.65 Under Root area)

P - Hydrostatic Test Pressure (Mpa) ; D- Specified Outside Diameter (mm); T- Specified Wall Thickness (mm)
E: ERW (Electric Resistance Welded) ; S- Seamless ; SMYS - Specified Min Yield Strength



Specification Type Grade Chemical Composition (%) Max Mechanical Properties Impact Energy J (Ft.lb) (min) Hydrostatic Test Pressure
Yield Strength Tensile Strength % Elongation
e
C Mn P S Si V Nb Ti C.E Min Max Min Max
PCM IIW PSI MPa PSI MPa PSI MPa PSI MPa
API 5L E & S PSL-1 L210 or A 0.22 0.90 0.030 0.030 _ _ _ _ _ _ 30,500 210 _ _ 48,600 335 _ _ U.S Customary Unit

e=625,000 A 0.2 \ U 0.9

Legend : e= Specified min. elongation

A = Tensile test piece cross sectional area

U=Specified min. tensile strength. 		_ U.S Customary Unit P = 2 S t /D
S.I Unit P = 2000 S t/D
Where P= Hydrostatic test Pr . In PSI (Kpa)
t = Specified W.T. inch (mm)
D= Specified Outside diameter. Inch (mm)
S= Fibre Stress in PSI (Mpa)
60% of Min.Y.S for all sizes for Grade A & B
L245 or B 0.26 1.20 0.030 0.030 _ _ _ _ _ _ 35,500 245 _ _ 60,200 415 _ _ _
L290 or X-42 0.26 1.30 0.030 0.030 _ _ _ _ _ _ 42,100 290 _ _ 60,200 415 _ _ _
L320 or X-46 0.26 1.40 0.030 0.030 _ _ _ _ _ _ 46,400 320 _ _ 63,100 435 _ _ _
L360 or X-52 0.26 1.40 0.030 0.030 _ _ _ _ _ _ 52,200 360 _ _ 66,700 460 _ _ _
L390 or X-56 0.26 1.40 0.030 0.030 _ _ _ _ _ _ 56,600 390 _ _ 71,100 490 _ _ _
L415 or X-60 0.26 1.40 0.030 0.030 _ _ _ _ _ _ 60,200 415 _ _ 75,400 520 _ _ _
L450 or X-65 0.26 1.45 0.030 0.030 _ _ _ _ _ _ 65,300 450 _ _ 77,600 535 _ _
L485 or X-70 0.26 1.65 0.030 0.030 _ _ _ _ _ _ 70,300 485 _ _ 82,700 570 _ _ _ 60 % of Min .Y.S for all sizes <5 9\16'' for Grade X-42 and above
75% of Min.Y.S for size >5 9\16"&
< 8 5\8" for Grade X-42 and above
85% of Min Y.S for sizes >8 5/8"&
< 20" for Gr X-42 and above
90% 0f Min .Y.S for sizes >= 20" for
Grade X-42 and above
Std. Test Pressure limited to 3000 PSI
(20700 kpa) for Grade X-42 and abover of
Altermate test pressure limited to 7260 PSI
(50000 kpa) for size <16" and 3630 PSI
(25000 kpa) for sizes >= 16" for Gr. X-42 and above
Note : For Seamless, 'C' will be 0.28% for Gr. B to X-70 and 'Mn' for Gr X-65 to X-70 will be 1.40%
API 5L E & S
PSL-2 		L245R or BR 0.24 1.2 0.025 0.015 0.4 _ _ 0.04 0.25 0.43 35,500 245 65,300 450 60,200 415 110,200 760 27 /20
L245N or BN 0.24 1.2 0.025 0.015 0.4 _ _ 0.04 0.25 0.43
L245Q or BQ 0.18 1.4 0.025 0.015 0.45 0.05 0.05 0.04 0.25 0.43
L245M or BM 0.22 1.2 0.025 0.015 0.45 0.05 0.05 0.04 0.25 0.43
L290R or X42R 0.24 1.2 0.025 0.015 0.45 0.06 0.05 0.04 0.25 0.43 42,100 290 71,800 495 60,200 415 110,200 760 27 (20)
L290N or X42N 0.24 1.2 0.025 0.015 0.45 0.06 0.05 0.04 0.25 0.43
L290Q or X42Q 0.18 1.4 0.025 0.015 0.45 0.05 0.05 0.04 0.25 0.43
L290M or X42M 0.22 1.3 0.025 0.015 0.45 0.05 0.05 0.04 0.25 0.43
L320N or X46N 0.24 1.4 0.025 0.015 0.45 0.07 0.05 0.04 0.25 0.43 46,400 320 76100 525 63,100 435 110,200 760 27 (20)
L320Q or X45Q 0.18 1.4 0.025 0.015 0.45 0.05 0.05 0.04 0.25 0.43
L320M or X46M 0.22 1.3 0.025 0.015 0.45 0.05 0.05 0.04 0.25 0.43
L360N or X52N 0.24 1.4 0.025 0.015 0.45 0.1 0.05 0.04 0.25 0.43 52,200 360 76,900 530 66,700 460 110,200 760 27 (20)
L360Q or X52Q 0.18 1.5 0.025 0.015 0.45 0.05 0.05 0.04 0.25 0.43
L360M or X52M 0.22 1.4 0.025 0.015 0.45 _ _ _ 0.25 0.43
L390N or X56N 0.24 1.4 0.025 0.015 0.45 0.1 0.05 0.04 0.25 0.43 56,600 390 79,000 545 71,100 490 110,200 760 27 (20)
L390Q or X56Q 0.18 1.5 0.025 0.015 0.45 0.07 0.05 0.04 0.25 0.43
L390M or X56M 0.22 1.4 0.025 0.015 0.45 _ _ _ 0.25 0.43
L415N or X60N 0.24 1.4 0.025 0.015 0.45 0.1 0.05 0.04 As Agreed 60,200 415 81,900 565 75,400 520 110,200 760 27 (20)
L415Q or X60Q 0.18 1.7 0.025 0.015 0.45 _ _ _ 0.25 0.43
L415M or X60M 0.12 1.6 0.025 0.015 0.45 _ _ _ 0.25 0.43
L450Q or X65Q 0.18 1.7 0.025 0.015 0.45 _ _ _ 0.25 0.43 65,300 450 87,000 600 77,600 535 110,200 760 27 (20)
L450M or X65M 0.12 1.6 0.025 0.015 0.45 _ _ _ 0.25 0.43
L485Q or X70Q 0.18 1.8 0.025 0.015 0.45 _ _ _ 0.25 0.43 70,300 485 92,100 635 82,700 570 110,200 760 27 (20)
L485M or X70M 0.12 1.7 0.025 0.015 0.45 _ _ _ 0.25 0.43
L555Q or X80Q 0.18 1.9 0.025 0.015 0.45 _ _ _ As Agreed 80,500 555 102,300 705 90,600 625 119,700 825 40(30)
L555M or X80M 0.12 1.85 0.025 0.015 0.45 _ _ _ 0.25 0.43

Tolerance On Outside Diameter, Wall Thickness, Weight And Length Of Pipe

SPEC. TYPE OUTSIDE DIAMETER WALL THICKNESS WEIGHT LENGTH
PIPE BODY PIPE ENDS (PLAIN END) NOMINAL AVG(min) MINIMUM MAXIMUM
ft. Mtr ft. Mtr ft. Mtr ft. Mtr
API 5L E, S < 2 3/8"(60.3 mm) OD : + 0.40mm, - 0.80mm <= 6 5/8" (168.3 mm): + 1.60mm, - 0.40mm Seamless : Single Length of Pipe : + 10%, - 3.5% 20 6 17.5 5.33 9 2.74 22.5 6.86
> = 2 3/8" (60.3 mm) OD > 6 5/8" (168.3 mm) <=4.0 mm WT: + 0.6 mm, - 0.5 mm Carloads ? 20 Ton : - 1.75%
to <= 24" (610 mm) : ± 0.0075 D to ? 24" (610 mm) : ± 0.005 D > 4.0 mm WT to < 25.0 mm WT : + 0.15t, - 0.125t 40 12 35.0 10.67 14 4.27 45.0 13.72
but max. of ± 3.20 mm for welded pipe (but max. of ± 1.6 mm) >= 25.0 mm WT : + 3.7 or + 0.1t (whichever is greater)
- 3.0 or 0.1t (whichever is greater)
ERW
<=5.0 mm WT : ± 0.5 mm
> 5.0 mm WT to < 15.0 mm WT : ± 0.1t
>=15.0 mm WT : ± 1.5 mm
IS : 3589 E,S Upto 508 mm O.D.: Welded : ± 0.75%
Seamless : ± 1.0% 		N.A Welded : ± 10%
Seamless : + 20%, -12.5%,		 Carload 10 MT & above : ± 7.5%