Hebei Huayang Steel Pipe Co., Ltd. |
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API SPEC 5L GB/T 9711.1 LSAW Steel Pipe In Pipe Oil And Gas
LSAW steel pipe is a straight seam submerged arc welded steel pipe. Its main
technical characteristics are as follows:
1. During the steel tube forming process, the steel plate is
uniformly deformed, the residual stress is small, and the surface
is not scratched. The processed steel pipe has greater flexibility
in the diameter and wall thickness steel pipe size specifications,
especially in the production of high-steel-grade thick-walled steel
pipes, especially large-caliber thick-walled pipes, which have
unmatched advantages in other processes, which can meet Users have
more requirements in terms of steel pipe specifications;
2. Adopting the pre-weld and then internal-outer welding (fine
welding) process, welding can be achieved at the optimal position,
which is not prone to defects such as misalignment, welding
deviation and under-penetration, and it is easy to control the
welding quality;
3. The overall mechanical diameter expansion can effectively
improve the dimensional accuracy of the steel pipe and improve the
distribution of stress in the steel pipe, thereby avoiding damage
due to stress corrosion, and at the same time, it is beneficial to
the welding construction on site;
4. Carry out 100% quality inspections on steel pipes, so that the
entire process of steel pipe production is under effective
detection and monitoring, effectively ensuring product quality;
5. All the equipment of the whole production line has the function
of networking with computer data acquisition system, realizing the
real-time transmission of data, and the central control room
controls the production.
1. Thickness: 9.5mm-50mm
2. Length: 6m-12.5m
3. Out diameter: 406.4mm - 1422.4mm (16"-56")
4. Type: LSAW (Longitudinal Submerged-Arc Welded), DSAW (Double Submerged-arc welded) Steel Pipe
5. Standard: API SPEC 5L (ISO 3183), GB/T 9711.1, GB/T 9711.2, GB/T 9711.3
6. Manufacturing Process: UO(UOE), RB(RBE), JCO(JCOE,COE)
7. Uses: for conveying gas, water and oil, in the oil or natural gas industries
8. Chemical Analysis (%):
Standard | Type of pipe | Class | Grade | C max | Si max | Mn max | P max | S max | V max | Nb max | Ti max |
API SPEC 5L /ISO 3183 | WELD | PSL1 | L245 B | 0.26 | - | 1.2 | - | 0.03 | 0.03 | - | - |
L290/X42 | 0.26 | - | 1.3 | - | 0.03 | 0.03 | - | - | |||
L320/X46 | 0.26 | - | 1.4 | - | 0.03 | 0.03 | - | - | |||
L360/X52 | 0.26 | - | 1.4 | - | 0.03 | 0.03 | - | - | |||
L390/X56 | 0.26 | - | 1.4 | - | 0.03 | 0.03 | - | - | |||
L415/X60 | 0.26 | - | 1.4 | - | 0.03 | 0.03 | - | - | |||
L450/X65 | 0.26 | - | 1.45 | - | 0.03 | 0.03 | - | - | |||
L485/X70 | 0.26 | - | 1.65 | - | 0.03 | 0.03 | - | - | |||
PSL2 | L245M/GR.BM | 0.22 | 0.45 | 1.2 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 | ||
L290M/X42M | 0.22 | 0.45 | 1.3 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 | |||
L320M/X46M | 0.22 | 0.45 | 1.3 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 | |||
L360M/X52M | 0.22 | 0.45 | 1.4 | 0.025 | 0.015 | - | - | - | |||
L390M/X56M | 0.22 | 0.45 | 1.4 | 0.025 | 0.015 | - | - | - | |||
L415M/X60M | 0.12 | 0.45 | 1.6 | 0.025 | 0.015 | - | - | - | |||
L450M/X65M | 0.12 | 0.45 | 1.6 | 0.025 | 0.015 | - | - | - | |||
L485M/X70M | 0.12 | 0.45 | 1.7 | 0.025 | 0.015 | - | - | - | |||
L555M/X80M | 0.12 | 0.45 | 1.85 | 0.025 | 0.015 | - | - | - |
9. Mechanical Properties
Standard | Class | Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Y.S/T.S | |
API SPEC 5L /ISO 3183 | PSL1 | L245/GR.B | min | 245 | 415 | b | - |
L290/X42 | min | 290 | 415 | b | - | ||
L320/X46 | min | 320 | 435 | b | - | ||
L360/X52 | min | 360 | 460 | b | - | ||
L390/X56 | min | 390 | 490 | b | - | ||
L415/X60 | min | 415 | 520 | b | - | ||
L450/X60 | min | 450 | 535 | b | - | ||
L485/X70 | min | 485 | 570 | b | - | ||
PSL2 | L245N/BN L245M/BM | min | 245 | 415 | b | - | |
max | 450 | 760 | b | 0.93 | |||
L290N/X42N L290M/X42M | min | 290 | 415 | b | - | ||
max | 495 | 760 | b | 0.93 | |||
L320N/X46N L320M/X46M | min | 320 | 435 | b | - | ||
max | 525 | 760 | b | 0.93 | |||
L360N/X52N L360M/X52M | min | 360 | 460 | b | - | ||
max | 530 | 760 | b | 0.93 | |||
L390N/X56N L390M/X56M | min | 390 | 490 | b | - | ||
max | 545 | 760 | b | 0.93 | |||
L415N/X60N L415M/X60M | min | 415 | 520 | b | - | ||
max | 565 | 760 | b | 0.93 | |||
L450M/X65M | min | 450 | 535 | b | - | ||
max | 600 | 760 | b | 0.93 | |||
L485M/X70M | min | 485 | 570 | b | - | ||
max | 635 | 760 | b | 0.93 | |||
L555M/X80M | min | 555 | 625 | b | - | ||
max | 705 | 825 | b | 0.93 |