Mechanical Performance
Requirements for the Results of Tensile Tests for API 5L PSL 1 Pipe
Pipe Grade | Pipe Body of Seamless Pipe | Weld Seam of EW, LW, SAW, and COW Pipe |
Yield Strength a Rt0.5 MPa (psi) | Tensile Strength a Rm MPa (psi) | Elongation (on 50 mm or 2 in.) Af % | Tensile Strength b Rm MPa (psi) |
min | min | min | min |
L175 or A25 | 175 (25,400) | 310 (45,000) | c | 310 (45,000) |
L175P or A25P | 175 (25,400) | 310 (45,000) | c | 310 (45,000) |
L210 or A | 210 (30,500) | 335 (48,600) | c | 335 (48,600) |
L245 or B | 245 (35,500) | 415 (60,200) | c | 415 (60,200) |
L290 or X42 | 290 (42,100) | 415 (60,200) | c | 415 (60,200) |
L320 or X46 | 320 (46,400) | 435 (63,100) | c | 435 (63,100) |
L360 or X52 | 360 (52,200) | 460 (66,700) | c | 460 (66,700) |
L390 or X56 | 390 (56,600) | 490 (71,100) | c | 490 (71,100) |
L415 or X60 | 415 (60,200) | 520 (75,400) | c | 520 (75,400) |
L450 or X65 | 450 (65,300) | 535 (77,600) | c | 535 (77,600) |
L485 or X70 | 485 (70,300) | 570 (82,700) | c | 570 (82,700) |
a For intermediate grades, the difference between the specified minimum tensile strength and the specified minimum yield strength for the pipe body shall be as given in the table for the next higher grade. b 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 footnote a). c The specified minimum elongation, Af, expressed in percent and rounded to the nearest percent, shall be as determined using the following equation: Af = C where C is 1940 for calculations using SI units and 625,000 for calculations using USC units; Axc is the applicable tensile test piece cross-sectional area, expressed in square millimeters (square inches), as follows: 1) for circular cross-section test pieces, 130 mm2 (0.20 in.2) for 12.7 mm (0.500 in.) and 8.9 mm (0.350 in.) diameter test pieces; 65 mm2 (0.10 in.2) for 6.4 mm (0.250 in.) diameter test pieces; 2) for full-section test pieces, the lesser of a) 485 mm2 (0.75 in.2) 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 (0.01 in.2); 3) for strip test pieces, the lesser of a) 485 mm2 (0.75 in.2) 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 (0.01 in.2); U is the specified minimum tensile strength, expressed in megapascals (pounds per square inch). |
Pipeline Tubes: Key Applications Across Industries
Pipeline tubes are critical components in numerous industries, ensuring efficient and safe transportation of fluids, gases, and other materials. Below are the major application fields where pipeline tubes play a vital role:
- Oil & Gas Industry
– Oil pipelines: Transport crude oil from extraction sites to refineries.
– Natural gas pipelines: Distribute gas for residential, commercial, and industrial use.
– Offshore pipelines: Subsea applications for deepwater oil and gas exploration.
- Water & Wastewater Management
– Water supply pipelines: Deliver potable water to urban and rural areas.
– Sewage pipelines: Transport wastewater to treatment plants.
– Irrigation pipelines: Support agricultural water distribution.
- Chemical & Petrochemical Industry
– Chemical pipelines: Transfer corrosive and hazardous fluids safely.
– Petrochemical pipelines: Transport refined products like ethylene and propylene.
- Power Generation & Energy Sector
– Steam pipelines: Used in thermal power plants.
– Hydropower pipelines: Channel water to turbines for energy production.
- Mining & Slurry Transport
– Slurry pipelines: Move ore, tailings, and mineral concentrates efficiently.
- Infrastructure & Urban Development
– District heating/cooling pipelines: Enable energy-efficient HVAC systems.
– Municipal pipelines: Support urban utility networks.
- Industrial Manufacturing
– Compressed air pipelines: Supply factories with pneumatic power.
– Process pipelines: Facilitate material handling in production lines.