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API 5L Grade B Seamless Steel Pipes
API 5L seamless steel pipe is produced through a seamless manufacturing process, usually through hot rolling, cold drawing or rotary extrusion. Seamless pipes generally outperform welded pipes in terms of surface finish and dimensional accuracy.
API 5L carbon steel pipe is a seamless or welded steel pipe produced in accordance with the American Petroleum Institute (API) 5L specification and is mainly used for the transportation of oil, natural gas and water.
API 5L PSL 1 steel pipe is the first level in the API 5L specification, which means that the mechanical properties and material requirements of the pipe meet the first level requirements of the API 5L specification. Represents that the mechanical properties and materials of the pipe meet the first level requirements of the API 5L specification. This demonstrates the high quality and reliability of pipes of this grade.
API 5L PSL 2 carbon steel pipe is available in sizes from 1/2" to 48" NB (nominal bore) and from Sch 10 to XXS (extra strong). The yield strengths of these pipes range from a minimum of 245MPa (35,500 psi) to a maximum of 450MPa (65,300 psi), depending on the steel grade.
API 5L specifications regulate pipeline transportation systems for the natural gas and oil industries and are widely applicable to the transportation of natural gas, oil, and water.
GNEE offers carbon steel API 5L x42, x52, x60, x65 and x70 line pipe in a variety of lengths, outside diameters, inside diameters, sizes and wall thicknesses to meet project needs. The minimum yield strength of API 5L steel pipe is 485MPa. The main components of API 5L seamless carbon steel pipe are carbon and manganese, and the alloy also contains 0.15% Nb, V and Ti.
Chemical composition of API 5L line pipe
Steel Grade | Mass fraction, % based on heat and product analyses a,g | ||||||
C | Mn | P | S | V | Nb | Ti | |
max b | max b | max | max | max | max | max | |
Seamless Pipe | |||||||
A | 0.22 | 0.9 | 0.3 | 0.3 | – | – | – |
0.28 | 1.2 | 0.3 | 0.3 | c,d | c,d | d | |
0.28 | 1.3 | 0.3 | 0.3 | d | d | d | |
X46 | 0.28 | 1.4 | 0.3 | 0.3 | d | d | d |
0.28 | 1.4 | 0.3 | 0.3 | d | d | d | |
X56 | 0.28 | 1.4 | 0.3 | 0.3 | d | d | d |
X60 | 0.28 e | 1.40 e | 0.3 | 0.3 | f | f | f |
0.28 e | 1.40 e | 0.3 | 0.3 | f | f | f | |
0.28 e | 1.40 e | 0.3 | 0.3 | f | f | f | |
a. Cu ≤ = 0.50% Ni; ≤ 0.50%; Cr ≤ 0.50%; and Mo ≤ 0.15%, | |||||||
API 5L mechanical properties
| Pipe Grade | Tensile Properties – Pipe Body of SMLS and Welded Pipes PSL 1 | Seam of Welded Pipe | ||
| Yield Strength a | Tensile Strength a | Elongation | Tensile Strength b | |
| Rt0,5 PSI Min | Rm PSI Min | (in 2in Af % min) | Rm PSI Min | |
| A | 30,500 | 48,600 | c | 48,600 |
| B | 35,500 | 60,200 | c | 60,200 |
| X42 | 42,100 | 60,200 | c | 60,200 |
| X46 | 46,400 | 63,100 | c | 63,100 |
| X52 | 52,200 | 66,700 | c | 66,700 |
| X56 | 56,600 | 71,100 | c | 71,100 |
| X60 | 60,200 | 75,400 | c | 75,400 |
| X65 | 65,300 | 77,500 | c | 77,500 |
| X70 | 70,300 | 82,700 | c | 82,700 |
| a. 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: | ||||
 | ||||
| Where C is 1940 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 follows | ||||
| – for 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) | ||||
Delivery condition
| PSL | Delivery Condition | Pipe grade |
| PSL1 | As-rolled, normalized, normalizing formed | A |
| Â | As-rolled, normalizing rolled, thermomechanical rolled, thermo-mechanical formed, normalizing formed, normalized, normalized and tempered or if agreed Q&T SMLS only | B |
| Â | As-rolled, normalizing rolled, thermomechanical rolled, thermo-mechanical formed, normalizing formed, normalized, normalized and tempered | X42, X46, X52, X56, X60, X65, X70 |
| PSL 2 | As-rolled | BR, X42R |
| Â | Normalizing rolled, normalizing formed, normalized or normalized and tempered | BN, X42N, X46N, X52N, X56N, X60N |
| Â | Quenched and tempered | BQ, X42Q, X46Q, X56Q, X60Q, X65Q, X70Q, X80Q, X90Q, X100Q |
| Â | Thermomechanical rolled or thermomechanical formed | BM, X42M, X46M, X56M, X60M, X65M, X70M, X80M |
| Â | Thermomechanical rolled | X90M, X100M, X120M |
| Â | The suffice (R, N, Q or M) for PSL2 grades, belongs to the steel grade |
API 5L Seamless Line Pipe
GNEE Company specializes in the production, sales and export of steel pipes. It's been 15 years now. It has 15 production lines of various types of steel pipes and 12 processing production lines. The annual output of steel pipes of various specifications is 450,000 tons, and the annual output of deep-processed steel pipes is 100,000 tons. Our customers come from Asia, the Middle East, Southeast Asia, the European Union and other countries.
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http://www.chinaapipipes.com/
