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Le tuyau de soudage par résistance électrique (tube en acier ERW) est une bobine laminée à chaud après le formage de la machine, l'utilisation de l'effet de peau à courant haute fréquence et des effets de proximité, le chauffage et la fusion des bords du tube, le rouleau presseur sous soudage sous pression pour réaliser la production.
Il existe des différences significatives dans les méthodes de soudage entre les tubes soudés à haute fréquence et les tubes soudés à l'arc submergé. Le soudage se faisant instantanément à haute vitesse, la difficulté d'assurer la qualité du soudage est bien supérieure à celle du soudage à l'arc submergé.
Utilisations: Pour le transport de gaz, d'eau et de pétrole dans les industries du pétrole ou du gaz naturel.
|
OD |
21.3mm -660mm |
|
W.T |
1mm-20mm |
|
LENGTH |
0.5mtr-22mtr |
|
Surface |
Fusion bond Epoxy coating, Coal Tar Epoxy, 3PE, Vanish Coating, Bitumen Coating, Black Oil coating as per customer’s requirement |
|
Standard |
API5L, ASTM A53 GR.B, ASTM A178, ASTM A500/501, ASTM A691, ASTM A252, ASTM A672, EN 10217; API SPEC 5L ISO 3183 GB/T 9711.1 GB/T 9711.2 GB/T 9711.3 |
|
Ends |
Square Ends (straight cut, saw cut) Beveled Ends |
|
Tolerance of Outside Diameter |
|||
|
Standard |
Out Diameter |
Tolerance of Pipe End |
Tolerance of Pipe Body |
|
API 5L |
219.1～273.1 |
+1.6mm, -0.4mm |
±0.75% |
|
274.0～320 |
+2.4mm, -0.8mm |
±0.75% |
|
|
323.8～457 |
+2.4mm, -0.8mm |
±0.75% |
|
|
508 |
+2.4mm, -0.8mm |
±0.75% |
|
|
559～610 |
+2.4mm, -0.8mm |
±0.75% |
|
|
Tolerance of Wall Thickness |
|||
|
Standard |
Grade |
Out Diameter |
Wall Thickness |
|
API 5L |
A |
219.1～457 |
+15%, -12.5% |
|
B |
508～610 |
+17.5%, -12.5% |
|
|
X42-X80 |
508～610 |
+19.5%, -8% |
|
|
Chemical Analysis (%) |
||||||||||
|
Standard |
Class |
Grade |
C |
Si |
Mn |
P |
S |
V |
Nb |
Ti |
|
max |
max |
max |
max |
max |
max |
max |
max |
|||
|
API SPEC 5L |
PLS1 |
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 |
- |
- |
||
|
PLS2 |
L245M 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 |
- |
- |
- |
||
|
Mechanical Properties |
|||||||
|
Standard |
Class |
Grade |
|
Yield strength not less than (MPa) |
Tensile strength (MPa) |
Elongation (%) |
Y.S/T.S |
|
API SPEC 5L |
PLS1 |
L245B |
min |
245 |
415 |
b |
- |
|
L290X42 |
min |
290 |
415 |
b |
- |
||
|
L320X46 |
min |
320 |
435 |
b |
- |
||
|
L360X52 |
min |
360 |
460 |
b |
- |
||
|
L390X56 |
min |
390 |
490 |
b |
- |
||
|
L415X60 |
min |
415 |
520 |
b |
- |
||
|
L450X60 |
min |
450 |
535 |
b |
- |
||
|
L485X70 |
min |
485 |
570 |
b |
- |
||
|
PLS2 |
L245N BN |
min |
245 |
415 |
b |
- |
|
|
L245M BM |
max |
450 |
760 |
b |
0.93 |
||
|
L290NX42N |
min |
290 |
415 |
b |
- |
||
|
L290MX42M |
max |
495 |
760 |
b |
0.93 |
||
|
L320NX46N |
min |
320 |
435 |
b |
- |
||
|
L320MX46M |
max |
525 |
760 |
b |
0.93 |
||
|
L360NX52N |
min |
360 |
460 |
b |
- |
||
|
L360MX52M |
max |
530 |
760 |
b |
0.93 |
||
|
L390NX56N |
min |
390 |
490 |
b |
- |
||
|
L390MX56M |
max |
545 |
760 |
b |
0.93 |
||
|
L415NX60N |
min |
415 |
520 |
b |
- |
||
|
L415MX60M |
max |
565 |
760 |
b |
0.93 |
||
|
L450MX65M |
min |
450 |
535 |
b |
- |
||
|
max |
600 |
760 |
b |
0.93 |
|||
|
L485MX70M |
min |
485 |
570 |
b |
- |
||
|
max |
635 |
760 |
b |
0.93 |
|||
|
L555MX80M |
min |
555 |
625 |
b |
- |
||
|
max |
705 |
825 |
b |
0.93 |
|||
|
Standard |
Grade |
Transverse minimum impact of Pipe body |
Transverse minimum impact of weld (J) |
|||||
|
(J) |
||||||||
|
D=508 |
508mm |
762mm |
914mm |
1219mm |
D<1422mm |
D=1422mm |
||
|
API SPEC 5L |
“=L415×60” |
27(20) |
27(20) |
40(30) |
40(30) |
40(30) |
27(20) |
40(30) |
|
>L415×60 |
27(20) |
27(20) |
40(30) |
40(30) |
54(40) |
27(20) |
40(30) |
|
|
“=L415×65” |
||||||||
|
>L450×65 |
27(20) |
27(20) |
40(30) |
40(30) |
54(40) |
27(20) |
40(30) |
|
|
“=L485×70” |
||||||||
|
>L485×70 |
40(30) |
40(30) |
40(30) |
40(30) |
54(40) |
27(20) |
40(30) |
|
|
“=L555×80” |
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|
Note:(1)The values in the table be suitable for the full size standard sample. |
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|
(2) The values inside bracket is the minimum single value, outside bracket is the average value. |
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|
(3) Test Temperature: 0°C. |
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