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Pipeline Steel
The series of product is comprised of B, X42, X46, X52, X56,
X60, X65, X70, X80, X90 by strength; it can be grouped into longi-
tudinal submerged arc welding (LSAW), electric resistance weld
pipe (ERW), spiral submerged arc welding (SSAW) pipe by weld-
ing process; it can be divided into oil transportation pipeline, natu-
ral gas pipeline, pipeline steel for acid environment and ocean en-
vironment by medium and environment. Except the oil and natural
gas industry application, this kind of pipeline can be widely used in
water transportation, chemical material and mineral slurry, etc
pressure-bearing transportation. According to different pipe man-
ufacturing processes and applications of users, the detail supply
technology specification could be different.
Supply Grade and Norm
| API SPEC 5L GB/T 9711 | |
|---|---|
|
(PSL1) |
(PSL2) |
|
B/L245 |
BM/L245M |
|
X42/L290 |
X42M/L290M |
|
X46/L320 |
X46M/L320M |
|
X52/L360 |
X52M/L360M/X52MS*/ L360MS*/ X52MO*/ L360MO* |
|
X56/L390 |
X56M/L390M/X56MS/L390MS/X56MO/L390MO |
|
X60/ L415 |
X60M/ L415M /X60MS/ L415MS/ X6OMO /L415MO |
|
X65/ L450 |
X65M /L450M/ X65MS /L450MS/ X65MO /L450MO |
|
X70 /L485 |
X70M/ L485M |
|
X80 |
X80M /L555M |
Remark:“-MS” is pipeline for acid environment,“-MO” is pipeline for ocean environment.
Product Dimension
| Steel Grades | Application | Thickness, mm | Width, mm | Length, mm |
|---|---|---|---|---|
|
Steel Coil |
Standard |
2.0～20 |
500～2050* |
C |
|
Acid resistant |
2.0～20 |
|||
|
Ocean |
4.0～20 |
|||
|
Decoiled Sheet |
Standard |
2.0～20 |
500～2050 |
No more than 13000 |
|
Acid resistant |
2.0～20 |
|||
|
Ocean |
4.0～20 |
|||
|
Slitting should be done to product of 500～900mm in width |
||||
| Mechanical Property | |||||
|---|---|---|---|---|---|
|
Steel Grade |
Tensile test |
180° Bending test
d=2a |
|||
|
Rt0.5(MPa) |
Rm(MPa) |
Yield ratio≤ |
A50, % |
||
|
B/L245/BM/L245M |
270～440 |
≥415 |
0.9 |
≥32 |
Qualified |
|
X42/L290/X42M/L290M |
320～440 |
≥415 |
0.9 |
≥32 |
Qualified |
|
X46/ L320/X46M/L320M |
360～480 |
≥430 |
0.9 |
≥31 |
Qualified |
|
X52/L360/X52M/L360M/X52MS*/
L360MS*/ X52MO*/ L360MO* |
390～510 |
≥460 |
0.9 |
≥31 |
Qualified |
|
X56/L390/X56M/L390M/X56MS/L3
90MS/X56MO/L390MO |
420～545 |
≥490 |
0.9 |
≥30 |
Qualified |
|
X60/L415/X60M/ L415M /X60MS/
L415MS/ X6OMO /L415MO |
445～565 |
≥520 |
0.9 |
≥28 |
Qualified |
|
X65/L450/X65M /L450M/ X65MS
/L450MS/ X65MO /L450MO |
480～600 |
≥540 |
0.9 |
≥27 |
Qualified |
|
X70/L485/X70M/ L485M |
500～620 |
≥570 |
0.92 |
≥27 |
Qualified |
|
X80//X80M /L555M |
570～680 |
≥625 |
0.93 |
≥27 |
Qualified |
| Process Property | ||||||
|---|---|---|---|---|---|---|
|
Steel Grade |
V-shape impact test |
Drop weight test |
Hardness
test |
|||
|
T℃ |
Akv, J |
Slight fracture
rate,% |
T, ℃ |
Slight fracture
rate ,% |
HV10 |
|
|
B/L245/BM/L245M |
-10 |
≥60 |
≥90 |
-5 |
≥85 |
≤220 |
|
X42/L290/X42M/L290M |
-10 |
≥80 |
≥90 |
-5 |
≥85 |
≤220 |
|
X46/ L320/X46M/L320M |
-10 |
≥80 |
≥90 |
-15 |
≥85 |
≤220 |
|
X52/L360/X52M/L360M/X52MS*/
L360MS*/ X52MO*/ L360MO* |
-20 |
≥100 |
≥90 |
-15 |
≥85 |
≤220 |
|
X56/L390/X56M/L390M/X56MS/L3
90MS/X56MO/L390MO |
-20 |
≥100 |
≥90 |
-15 |
≥85 |
≤220 |
|
X60/L415/X60M/ L415M /X60MS/
L415MS/ X6OMO /L415MO |
-20 |
≥120 |
≥90 |
-15 |
≥85 |
≤230 |
|
X65/L450/X65M /L450M/ X65MS
/L450MS/ X65MO /L450MO |
-20 |
≥120 |
≥90 |
-15 |
≥85 |
≤230 |
|
X70/L485/X70M/ L485M |
-20 |
≥160 |
≥90 |
-15 |
≥85 |
≤230 |
|
X80//X80M /L555M |
-20 |
≥200 |
≥90 |
-15 |
≥85 |
≤230 |
- The impact energy in the table above is the average value of 10*10*55mm sample, the allowable single value is not lower than 75% of the average value, and small size sample impact energy is required to count according to the corresponding norm.
- The slight fracture rate of the impact test and slight fracture rate of the drop-weight test is the average value.
Other Properties
| Grade | HIC test SSC test |
|---|---|
|
X52MS/L360MS |
Satisfy requiroment in AP I SPEC5L or
GB/T 9711 |
|
X56MS/L390MS |
|
|
X60MS/L415MS |
|
|
X65MS/L450MS |
