Cangzhou Zhongrun Steel Tube Co.,Ltd dedicated to serve you.
We always provide highest quality seamless pipe/tube and best service.
I am looking forward to hearing from you.
The following is the standard data, we will do our best to follow the customers' requirements and the agreement to perform.
| Production | API 5L seamless steel pipe/tube |
| PSL | PSL1 |
| Treatment process | As-rolling |
| Type of length | Random length or Approximate length |
| Type of pipe end | Belled end,Plain end,Threaded end,Plain end for special coupling |
| Inspection and Test | Tensile test,Hydrostatic test,Flattening test,Non-destructive inspection |
Chemical composition
| Pipe grade/Steel grade | C(%),max. | Mn(%),max. | P(%),min. | P(%),max. | S(%),max. | V(%),max. | Nb(%),max. | Ti(%),max. |
| L175/A25 | 0.21 | 0.6 | 0.03 | 0.03 | ||||
| L175P/A25P | 0.21 | 0.6 | 0.045 | 0.08 | 0.03 | |||
| L210/A | 0.22 | 0.9 | 0.03 | 0.03 | ||||
| L245/B | 0.28 | 1.2 | 0.03 | 0.03 | c,d | c,d | d | |
| L290/X42 | 0.28 | 1.3 | 0.03 | 0.03 | d | d | d | |
| L320/X46 | 0.28 | 1.4 | 0.03 | 0.03 | d | d | d | |
| L360/X52 | 0.28 | 1.4 | 0.03 | 0.03 | d | d | d | |
| L390/X56 | 0.28 | 1.4 | 0.03 | 0.03 | d | d | d | |
| L415/X60 | 0.28 | 1.4 | 0.03 | 0.03 | f | f | f | |
| L450/X65 | 0.28 | 1.4 | 0.03 | 0.03 | f | f | f | |
| L485/X70 | 0.28 | 1.4 | 0.03 | 0.03 | f | f | f | |
| a.Cu<=0.5%;Ni<=0.5%;Cr<=0.5% and Mo<=0.15% | ||||||||
| c.Unless otherwise agreed,Nb+V<=0.06% | ||||||||
| d.Nb+VT+Ti<=0.15% | ||||||||
| f.Unless otherwise agreed,Nb+V+Ti<=0.15% | ||||||||
| g.No deliberate addition of B is permitted and the residual B<=0.001% | ||||||||
Steel grade and delivery condition
| PSL | Delivery condition | Pipe grade/Steel grade |
| PSL1 | As-rolled,normailized | L175/A25 |
| L175P/A25P | ||
| L210/A | ||
| As-rolled,normailized, themomechanical,tempered,quenched | L245/B | |
| As-rolled,normailized, themomechanical,tempered,quenched | L290/X42 | |
| L320/X46 | ||
| L360/X52 | ||
| L390/X56 | ||
| L415/X60 | ||
| L450/X65 | ||
| L485/X70 |
OD tolerance
| Outside diameter ,D(mm) | Diameter 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 to +0.0075D | -0.4 to +1.6 |
| >168.3 to 610 | -0.0075D to +0.0075D | -0.005D to +0.005D,but maximum of -1.6 to +1.6 |
| >610 to 1422 | -0.01D to +0.01D | -2 to +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 +0.6 |
| >4 to <25 | -0.125t +0.15t |
| >=25 | +3.7 or +0.1t,whichever is the greater -3 or -0.1t,whichever is the greater |
Tensile properties
| Pipe grade/Steel grade | Yield strength (Mpa/psi),min. | Tensilestrength(Mpa/psi),min. |
| L175/A25 | 175(25400) | 310(45000) |
| L175P/A25P | 175(25400) | 310(45000) |
| L210/A | 210(30500) | 335(48600) |
| L245/B | 245(35500) | 415(60200) |
| L290/X42 | 290(42100) | 415(60200) |
| L320/X46 | 320(46400) | 435(63100) |
| L360/X52 | 360(52200) | 460(66700) |
| L390/X56 | 390(56600) | 490(71100) |
| L415/X60 | 415(60200) | 520(75400) |
| L450/X65 | 450(65300) | 535(77600) |
| L485/X70 | 485(70300) | 570(82700) |
SMLS Pipes Manufacturing Process
