Cangzhou Zhongrun Steel Tube Co.,Ltd sincerely cooperate with you,and dedicate to serve you.
We always provide highest quality seamless pipe/tube and best service.
I am looking forward to hearing from you,and cordially invite you to visit our company.
The following is the standard data, we will do our best to follow the customers' requirements and the agreement to perform.
| Production | API 5L PSL2 seamless steel pipe |
| PSL | PSL2 |
| Process of manufacture | As-rolled,Heat-treated |
| Type of length | Fixed ruler and Double ruler |
| Type of pipe end | Plain end |
| Inspection and Test | Tensile test,Hydrostatic test,Non-destructive inspection and as agreed |
Steel Grade and Delivery Condition
| PSL | Delivery condition | Pipe/Steel grade |
| PSL2 | As-rolled | L245R/BR |
| L290R/X42R | ||
| normalizing rolled,normalizing formed,normailized or normalized and tempered | L245N/BN | |
| L290N-L415N/X42N-X60N | ||
| quenched and tempered | L245Q/BQ | |
| L290Q-L690Q/X42Q-X100Q | ||
| thermomechanical rolled or thermamechanical formed | L245M/BM | |
| L290M-L555M/X42M-X80M | ||
| thermomechanical rolled | L625M/X90M | |
| L690M/X100M | ||
| The suffix(R,N,QorM) for PSL2 grades belongs to the steel grade,they are describing the delivery condition. |
Chemical Composition
| Pipe/Steel grade | C(%)≤ | Si(%)≤ | Mn(%)≤ | P(%)≤ | S(%)≤ | V(%)≤ | Nb(%)≤ | Ti(%)≤ | CEiiw(%)≤ |
| L245/B | 0.24 | 0.45 | 1.4 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 | 0.43 |
| L290/X42 | 0.24 | 0.45 | 1.4 | 0.025 | 0.015 | 0.06 | 0.05 | 0.04 | 0.43 |
| L320/X46 | 0.24 | 0.45 | 1.4 | 0.025 | 0.015 | 0.07 | 0.05 | 0.04 | 0.43 |
| L360/X52 | 0.24 | 0.45 | 1.5 | 0.025 | 0.015 | 0.1 | 0.05 | 0.04 | 0.43 |
| L390/X56 | 0.24 | 0.45 | 1.5 | 0.025 | 0.015 | 0.1 | 0.05 | 0.04 | 0.43 |
| L415/X60 | 0.24 | 0.45 | 1.7 | 0.025 | 0.015 | 0.1 | 0.05 | 0.04 | 0.43 |
| L450/X65 | 0.24 | 0.45 | 1.7 | 0.025 | 0.015 | g | g | g | 0.43 |
| L485/X70 | 0.18 | 0.45 | 1.8 | 0.025 | 0.015 | g | g | g | 0.43 |
| L555/X80 | 0.18 | 0.45 | 1.9 | 0.025 | 0.015 | g | g | g | as agreed |
| L625/X90 | 0.16 | 0.45 | 1.9 | 0.02 | 0.01 | g | g | g | as agreed |
| L690/X100 | 0.16 | 0.45 | 1.9 | 0.02 | 0.01 | g | g | g | as agreed |
| a.The CEiiw limits apply if C>0.12% and the CEpcm limits apply if C≤0.12% | |||||||||
| g.Unless otherwise agreed,Nb+V+Ti≤0.15% | |||||||||
OD Tolerance
| Outside diameter ,D(mm) | Tolerances(mm) | |
| Pipe except the end | Pipe end | |
| <60.3 | -0.8 to +0.4 | -0.8 to +0.4 |
| ≥60.3 to 168.3 | ±0.0075D | -0.4 to +1.6 |
| >168.3 to 610 | ±0.0075D | ±0.005D,but maximum of ±1.6 |
| >610 to 1422 | ±0.01D | ±2 |
| >1422 | as agreeed | |
| The pipe end incloudes a length of 100mm at each of the pipe extremities. | ||
WT Tolerance
| Wall thickness,t(mm) | Tolerances(mm) |
| ≤4 | -0.5 to +0.6 |
| >4 to <25 | -0.125t to +0.15t |
| ≥25 | +3.7 or +0.1t,whichever is the greater; -3 or -0.1t,whichever is the greater |
Tensile Properties
| Pipe/Steel grade | Yield strength(Mpa) | Tensile strength(Mpa) | ||
| minimum | maximum | minimum | maximum | |
| L245/B | 245 | 450 | 415 | 655 |
| L290/X42 | 290 | 495 | 415 | 655 |
| L320/X46 | 320 | 525 | 435 | 655 |
| L360/X52 | 360 | 530 | 460 | 760 |
| L390/X56 | 390 | 545 | 490 | 760 |
| L415/X60 | 415 | 565 | 520 | 760 |
| L450/X65 | 450 | 600 | 535 | 760 |
| L485/X70 | 485 | 635 | 570 | 760 |
| L555/X80 | 555 | 705 | 625 | 825 |
| L625/X90 | 625 | 775 | 695 | 915 |
| L690/X100 | 690 | 840 | 760 | 990 |
SMLS Pipes Manufacturing Process
External corrosion process
