Line Pipe | Seamless Steel Line Pipes
Recently our company has sent a batch of seamless line pipes to Singapore,the material is API 5L GR X52 .Here are photos of line pipes.
Now let’s learn about line pipe.
Carbon steel line pipes
Definitions
Line pipe is used to transport oil,gas and water pulled out of ground to the oil and gas industrial enterprise.Line pipe is divided into seamless and welded pipes.It has plain ends,thread ends and socket ends.Its connection type has end welding,connect with coupling,socked weld etc.
Standard:
There are two standards for line pipe,API SPEC 5L and GB/T9711.
Usage:
Line pipes are used in pipeline transportation systems in petroleum and natural gas industries.
Main materials:
L245,L290,L360,L415,L480,GR.B,X42,X46,X56,X65,X70,X80,X100
Chemical composition:
| roduct Level | Steel grade | Chemical composition, % | ||||||||
| C | Mn | P | S | Si | V | Nb | Ti | CEpcm | ||
| PSL 1 | B or L245 | ≤0.28 | ≤1.20 | ≤0.030 | ≤0.030 | – | – | – | – | – |
| x42 or L290 | ≤0.28 | ≤1.30 | ≤0.030 | ≤0.030 | – | – | – | – | – | |
| X46 or L320 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | – | – | – | – | – | |
| X52 or L360 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | – | – | – | – | – | |
| X56 or L390 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | – | – | – | – | – | |
| X60 or L415 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | – | – | – | – | – | |
| X70 | ≤0.28 | ≤1.40 | ≤0.030 | ≤0.030 | – | – | – | – | – | |
| PSL 2 | BR or L245R | ≤0.24 | ≤1.20 | ≤0.025 | ≤0.015 | ≤0.40 | c | c | ≤0.04 | ≤0.25 |
| X42R or L290R | ≤0.24 | ≤1.20 | ≤0.025 | ≤0.015 | ≤0.40 | ≤0.06 | ≤0.05 | ≤0.04 | ≤0.25 | |
| BN or L245N | ≤0.24 | ≤1.20 | ≤0.025 | ≤0.015 | ≤0.40 | c | c | ≤0.04 | ≤0.25 | |
| X42N or L290N | ≤0.24 | ≤1.30 | ≤0.025 | ≤0.015 | ≤0.40 | ≤0.06 | ≤0.05 | ≤0.04 | ≤0.25 | |
| X46N or L320N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.40 | ≤0.07 | ≤0.05 | ≤0.04 | ≤0.25 | |
| X52N or L360N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | ≤0.25 | |
| X56N or L390N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | ≤0.25 | |
| X60N or L415N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | – | |
| X65N or L450N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | – | |
| X70N | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | – | |
| X80 | ≤0.24 | ≤1.40 | ≤0.025 | ≤0.015 | ≤0.45 | ≤0.10 | ≤0.05 | ≤0.04 | – | |
Mechanical properties:
| Standard | Product Level | Steel grade | Yield Strength (min), Mpa | Tensile Strength（MPa） |
| API 5L GB/T9711.2 | PSL 1 | A or L210 | 210 | 335 |
| B or L245 | 245 | 415 | ||
| x42 or L290 | 290 | 415 | ||
| X46 or L320 | 320 | 435 | ||
| X52 or L360 | 360 | 460 | ||
| X56 or L390 | 390 | 490 | ||
| X60 or L415 | 415 | 520 | ||
| X70 | 483 | 565 | ||
| PSL 2 | BR or L245R | 245~450 | 415~760 | |
| X42R or L290R | 290~495 | 415~760 | ||
| BN or L245N | 245~450 | 415~760 | ||
| X42N or L290N | 290~495 | 415~760 | ||
| X46N or L320N | 320~525 | 435~760 | ||
| X52N or L360N | 360~530 | 460~760 | ||
| X56N or L390N | 390~545 | 490~760 | ||
| X60N or L415N | 415~565 | 520~760 | ||
| X65N or L450N | 425~566 | 525~760 | ||
| X70 or L480 | 484~565 | 565~768 | ||
| X80 | 552~690 | 621~827 |
Our company can provide API 5L line pipes,if you have any inquiry,please contact us.
