API 5L X42(L290) Seamless Line Pipe
- API SPEC 5L PSL 1 PSL 2
- China
- Stock
- X42(L290)
API SPEC 5L specifies requirements for the manufacture of two product specification levels (PSL 1 and PSL 2) of seamless and welded steel pipe for use in pipeline transportation systems in the petroleum and natural gas industries.
API 5L X42(L290) Seamless Line Pipe
API 5L X42(L290) Line Pipe
Standard:API SPEC 5L
API SPEC 5L specifies requirements for the manufacture of two product specification levels (PSL 1 and PSL 2) of seamless and welded steel pipe for use in pipeline transportation systems in the petroleum and natural gas industries. API 5L PSL 1 X42(L290) Line Pipe API 5L PSL 2 X42(L290)Line Pipe
API 5L X42(L290) Line Pipe Quick Details
Standard: API SPEC 5L
Outside Diameter: 25mm-219.3mm
Wall thickness: 3.4mm-40mm
Length: 6000Mm, 12000m or specified length as required.
Type of End-Finish: Plain End, Beveled End, Treaded
Surface treatment: Tubes will be varnished (Outside only) to prevent rust.
Additional Info
Payment Terms:T/ T, LC
Port of Shipment: Tianjin, China
Package:According To Per Customers' Require
Marking: Standard + Steel Grade + Size + Heat No + Lot No
Delivery time: Tubes will be completed within 30 days, and urgent delivery time can be discussed.
Manufacturing
Process of Manufacture
API 5L X42(L290) Line Pipe shall be manufactured in accordance with the applicable requirements and limitations given in Tables 1 and 2.
Table 2—Acceptable Manufacturing Routes for API 5L PSL 1 X42(L290) Pipe
| Type of Pipe or Pipe End | PSL 1 Pipe Grade | PSL 2 Pipe Grade |
| L290 or X42 | L290 or X42 | |
| Type of Pipe | ||
| SMLS | X | X |
| CW | — | — |
| LFW | X | — |
| HFW | X | X |
| LW | X | — |
| SAWL | X | X |
| SAWH | X | X |
| COWL | X | X |
| COWH | X | X |
| Type of Pipe End | ||
| Belled end | X | — |
| Plain end | X | X |
| Plain end for special coupling | — | — |
| Threaded end | — | — |
|
1.Intermediate grades are available if agreed, but limited to grades higher than Grade L290 or X42. 2.Double-seam pipe is available if agreed, but limited to pipe with D≥914mm (36.000 in.). 3.Helical seam pipe is limited to pipe with D≥114.3 mm (4.500 in.). 4.Belled-end pipe is limited to pipe with D ≤ 219.1 mm (8.625 in.) and t ≤3.6 mm (0.141 in.). 5.Threaded-end pipe is limited to SMLS and longitudinal seam welded pipe with D ≤508 mm (20.000 in.). |
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Table 2—Acceptable Manufacturing Routes for API 5L PSL 2 X42(L290) Pipe
| Type of Pipe | Starting Material | Pipe Forming |
Pipe Heat Treatment |
Delivery Condition |
| SMLS | Ingot, bloom, or billet | As-rolled | — | R |
| Normalizing forming | — | N | ||
| Hot forming | Normalizing | N | ||
|
Quenching and tempering |
Q | |||
|
Hot forming and cold finishing |
Normalizing | N | ||
|
Quenching and tempering |
Q | |||
| HFW | Normalizing-rolled coil | Cold forming |
Heat treating of weld area only |
N |
| Thermomechanical-rolled coil | Cold forming | Heat treating Of weld area only | M | |
|
Heat treating a of weld area and stress relieving of entire pipe |
M | |||
| As-rolled or thermomechanical-rolled coil | Cold forming | Normalizing | N | |
|
Quenching and tempering |
Q | |||
| Cold forming followed by hot reducing under controlled temperature resulting in a normalized condition | — | N | ||
|
Cold forming followed by thermomechanical forming of pipe |
— | M | ||
| SAW or COW pipe |
Normalized or normalizing- rolled coil or plate |
Cold forming | — | N |
|
As-rolled, thermomechanical-rolled, normalizing-rolled, or normalized |
Cold forming | Normalizing | N | |
|
Thermomechanical-rolled coil or plate |
Cold forming | — | M | |
|
Quenched and tempered plate |
Cold forming | — | Q | |
|
As-rolled, thermomechanical-rolled, normalizing-rolled, or normalized coil or plate |
Cold forming |
Quenching and tempering |
Q | |
|
As-rolled, thermomechanical-rolled, normalizing-rolled, or normalized coil or plate |
Normalizing forming | — | N | |
|
R:As-rolled N:Normalizing rolled, normalizing formed, normalized, or normalized and tempered Q:Quenched and tempered M:Thermomechanical rolled or thermomechanical formed |
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Note:Treatment of Weld Seams in EW and LW Pipe
PSL 1 EW Pipe
For Grade L290 or X42, the weld seam shall be heat treated so as to simulate a normalizing heat treatment, or the pipe shall be processed in such a manner that no untempered martensite remains.
LW Pipe and PSL 2 HFW Pipe
For API 5L X42(L290) not subjected to quench and temper processing, the weld seam and the entire HAZ shall be heat treated so as to simulate a normalizing heat treatment.
Chemical Composition
Table 3—Chemical Composition for API 5L PSL 1 X42(L290) Pipe with t ≤25.0 mm (0.984 in.)
| Grade | Chemical Composition,% | |||||||
| C | Mn | P | S | V | Nb | Ti | ||
| max | max | min | max | max | max | max | max | |
| Seamless Pipe | ||||||||
| L290 or X42 | 0.28 | 1.30 | — | 0.030 | 0.030 | - | - | - |
| Welded Pipe | ||||||||
| L290 or X42 | 0.26 | 1.30 | — | 0.030 | 0.030 | - | - | - |
Nb + V + Ti ≤0.15 %.
Table 4—Chemical Composition for API 5L PSL 2 X42(L290) Pipe with t ≤25.0 mm (0.984 in.)
| Grade | Chemical Composition |
Carbon Equivalent % max |
|||||||||
| C | Si | Mn | P | S | V | Nb | Ti | Other | CE IIW | CE Pcm | |
| Seamless and Welded Pipe | |||||||||||
| L290R or X42R | 0.24 | 0.40 | 1.20 | 0.025 | 0.015 | 0.06 | 0.05 | 0.04 | - | 0.43 | 0.25 |
| L290N or X42N | 0.24 | 0.40 | 1.20 | 0.025 | 0.015 | 0.06 | 0.05 | 0.04 | - | 0.43 | 0.25 |
| L290Q or X42Q | 0.18 | 0.45 | 1.40 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 | - | 0.43 | 0.25 |
| Welded Pipe | |||||||||||
| L290M or X42M | 0.22 | 0.45 | 1.30 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 | 0.43 | 0.25 | |
Mechanical properties
Tensile Properties
For API 5L PSL 1 X42(L290) pipe, the tensile properties shall be as given in Table 5.
| Grade | Pipe Body of Seamless and Welded Pipe |
Weld Seam of EW, LW, SAW, and COW Pipe |
||
|
Yield Strength R t0.5 MPa (psi) |
Tensile Strength R m MPa (psi) |
Elongation (on 50 mm or 2 in.) A f % |
Tensile Strength R m MPa (psi) |
|
| min | min | min | min | |
| L290 or X42 | 290 (42,100) | 415 (60,200) | C | 415 (60,200) |
For API 5L PSL 2 X42(L290) pipe, the tensile properties shall be as given in Table 6.
| Grade | Pipe Body of Seamless and Welded Pipe |
Weld Seam of HFW, SAW and COW Pipe |
|||||
|
Yield Strength R t0.5 MPa (psi) |
Tensile Strength R m MPa (psi) |
Ratio R t0.5 /R m |
Elongation (on 50 mm or 2 in.) A f % |
Tensile Strength R m MPa (psi) |
|||
| min | max | min | max | max | min | min | |
|
L290R or X42R L290N or X42N L290Q or X42Q L290M or X42M |
290 (42,100) |
495 (71,800) |
415 (60,200) |
655 (95,000) |
0.93 | F |
415 (60,200) |
Note:
A f :The specified minimum elongation, A f , expressed in percent and rounded to the nearest percent, shall be as determined using the
following equation:
where
C is 1940 for calculations using SI units and 625,000 for calculations using USC units;
A xc is the applicable tensile test piece cross-sectional area,
U is the specified minimum tensile strength, expressed in megapascals (pounds per square inch).
Testings
Tensile Test
Hydrostatic Test
Full Section Bend Test
Flattening Test
Guided-bend Test
Hardness Test
Pipe Weld and HAZ Tests
Macrographic and Metallographic Tests
DWT Test for API 5L PSL 1 X42(L290) Welded Pipe
CVN Impact Test for API 5L PSL 2 X42(L290) Pipe
Table 6 CVN Absorbed Energy Requirements for Pipe Body of PSL 2 Pipe
|
Specified Outside Diameter Dmm (in.) |
Full-size CVN Absorbed Energy min K V J (ft·lbf) |
| Grade | |
| L290 or X42 | |
| ≤ 508 (20.000) | 27 (20) |
| ＞508 (20.000) to 762 (30.000) | 27 (20) |
| ＞762 (30.000) to 914 (36.000) | 40 (30) |
| ＞914 (36.000) to 1219 (48.000) | 40 (30) |
| ＞1219 (48.000) to 1422 (56.000) | 40 (30) |
| ＞1422 (56.000) to 2134 (84.000) | 40 (30) |
Dimensions Tolerances
(1) The pipe shall be delivered in random lengths or approximate length,.
(2)The specified outside diameter and specified wall thickness shall be within the applicable limits given in Table 7.
Table 7 Permissible Specified Outside Diameter and Specified Wall Thickness
|
Specified Outside Diameter Dmm (in.) |
Specified Wall Thickness t mm (in.) |
|
| Special Light Sizes a | Regular Sizes | |
| ≥10.3 (0.405) to ＜13.7 (0.540) | — | ≥1.7 (0.068) to ≤ 2.4 (0.094) |
| ≥13.7 (0.540) to ＜ 17.1 (0.675) | — | ≥2.2 (0.088) to ≤ 3.0 (0.118) |
| ≥17.1 (0.675) to ＜21.3 (0.840) | — | ≥2.3 (0.091) to ≤ 3.2 (0.125) |
| ≥21.3 (0.840) to ＜ 26.7 (1.050) | — | ≥2.1 (0.083) to ≤ 7.5 (0.294) |
| ≥26.7 (1.050) to ＜33.4 (1.315) | — | ≥ 2.1 (0.083) to ≤7.8 (0.308) |
| ≥33.4 (1.315) to ＜48.3 (1.900) | — | ≥2.1 (0.083) to ≤ 10.0 (0.394) |
| ≥48.3 (1.900) to＜60.3 (2.375) | — | ≥2.1 (0.083) to ≤ 12.5 (0.492) |
| ≥ 60.3 (2.375) to＜73.0 (2.875) | ≥ 2.1 (0.083) to ≤ 3.6 (0.141) | ≥3.6 (0.141) to ≤ 14.2 (0.559) |
| ≥73.0 (2.875) to＜88.9 (3.500) | ≥ 2.1 (0.083) to ≤ 3.6 (0.141) | ≥3.6 (0.141) to ≤ 20.0 (0.787) |
| ≥ 88.9 (3.500) to＜101.6 (4.000) | ≥2.1 (0.083) to ≤ 4.0 (0.156) | ≥ 4.0 (0.156) to ≤ 22.0 (0.866) |
| ≥101.6 (4.000) to ? 168.3 (6.625) | ≥2.1 (0.083) to ≤ 4.0 (0.156) | ≥ 4.0 (0.156) to≤ 25.0 (0.984) |
| ’? 168.3 (6.625) to＜219.1 (8.625) | ≥2.1 (0.083) to ≤ 4.0 (0.156) | ≥4.0 (0.156) to ≤40.0 (1.575) |
| ≥219.1 (8.625) to＜273.1 (10.750) | ≥ 3.2 (0.125) to ≤ 4.0 (0.156) | ≥4.0 (0.156) to≤ 40.0 (1.575) |
| ≥273.1 (10.750) to＜323.9 (12.750) | ≥3.6 (0.141) to ≤5.2 (0.203) | ≥5.2 (0.203) to ≤45.0 (1.771) |
| ≥323.9 (12.750) to＜355.6 (14.000) | ≥ 4.0 (0.156) to ≤ 5.6 (0.219) | ≥5.6 (0.219) to≤ 45.0 (1.771) |
| ≥355.6 (14.000) to＜457 (18.000) | ≥ 4.5 (0.177) to ≤ 7.1 (0.281) | ≥7.1 (0.281) to≤ 45.0 (1.771) |
| ≥457 (18.000) to＜559 (22.000) | ≥ 4.8 (0.188) to ≤7.1 (0.281) | ≥7.1 (0.281) to≤ 45.0 (1.771) |
| ≥559 (22.000) to＜711 (28.000) | ≥ 5.6 (0.219) to ≤ 7.1 (0.281) | ≥7.1 (0.281) to≤45.0 (1.771) |
| ≥711 (28.000) to＜864 (34.000) | ≥ 5.6 (0.219) to ≤ 7.1 (0.281) | ≥7.1 (0.281) to≤ 52.0 (2.050) |
| ≥864 (34.000) to＜965 (38.000) | — | ≥5.6 (0.219) to≤ 52.0 (2.050) |
| ≥965 (38.000) to＜1422 (56.000) | — | ≥6.4 (0.250) to ≤ 52.0 (2.050) |
| ≥1422 (56.000) to＜1829 (72.000) | — | ≥9.5 (0.375) to ≤ 52.0 (2.050) |
| ≥1829 (72.000) to＜2134 (84.000) | — | ≥10.3 (0.406) to ≤ 52.0 (2.050) |
| NOTE Standardized values for specified outside diameter and specified wall thickness of pipe are given in ISO 4200 [7] and ASME B36.10M[8] | ||
|
a: Pipe having the combination of specified outside diameter and specified wall thickness is defined as special light size pipe; other combinations given in this table are defined as regular size pipe. |
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Surface Conditions, Imperfections, and Defects
All pipe shall be free from defects in the finished condition.
All pipe shall be free from cracks, sweats, and leaks.
Finish of Pipe Ends
General
API 5L PSL 1 X42(L290) pipe shall be furnished with plain ends, unless another acceptable end finish is specified in the purchase order.
API 5L PSL 2 X42(L290) pipe shall be furnished with plain ends.
Pipe ends shall be free from burrs.
Threaded Ends (PSL 1 Only)
Belled Ends (PSL 1 Only)
Ends Prepared for Special Couplings (PSL 1 Only)
Plain Ends
Coatings and Thread Protectors
Coatings and Linings
If agreed, pipe will be delivered with a temporary external coating to provide protection from rusting in storage and transit.
If agreed, pipe will be delivered with a lining.
Thread Protectors
For threaded pipe with D < 60.3 mm (2.375 in.), the thread protectors shall be suitable fabric wrappings or shall be suitable metal, fiber, or plastic protectors.
For threaded pipe with D ≥ 60.3 mm (2.375 in.), the thread protectors shall be of such design,material, and mechanical strength as to protect the thread and pipe end
General Information
The purchase order shall include the following information:
a) quantity (e.g. total mass or total length of pipe);
b) PSL (1 or 2);
c) type of pipe ;
d) reference to API 5L;
e) steel grade ;
f) outside diameter and wall thickness ;
g) length and type of length (random or approximate) ;
h) confirmation of applicability of individual annexes.
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