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We are committed to providing one-stop service for steel pipe products to customers around the world.
Longitudinally Submerged Arc Welding Pipe is subdivided into UOE, RBE, JCOE steel pipe according to its different forming methods. Longitudinal high-frequency welded steel pipe has the characteristics of relatively simple process and fast continuous production, and has wide use in civil construction,petrochemical, light industry and other sectors. Mostly used to transport low pressure fluids or made into various engineering components and light industrial products.
UOE LSAW PIPES
|
UOE LSAW PIPES |
The UOE mill features the most advanced technology and process, achieves high production efficiency, stable product quality and is equipped with complete inspection equipments. |
|
Prodution Line |
UOE mill adopts U & O forming, the formed pipes are welded inside through five internal welding stations with three wires, and welded outside through four external welding stations with three wires. In accordance with different requirements of the customers, the welded pipe can be expanded either by mechanical or hydrostatic expander to improve dimensional accuracy, and eliminate residual stress. |
|
Specifications |
Outside Diameter： Φ508mm- 1118mm (20"- 44")
Wall Thickness： 6.0-25.4mm（1/4"-1"） |
JCOE LSAW PIPES（PRESS BENDING）
|
Prodution Line |
This is large diameter longitudinal submerged arc welded (LSAW) pipe production line in China. The mill adopts progressive bending process, featuring evenly distributed forming stress, high uniformity of dimension, infinite sizes variation&wide poduct range, and high flexibility, etc. |
|
Specifications |
Outside Diameter： Φ406mm- 1626mm (16" - 64" )
Wall Thickness： 6.0- 75mm (1/4" - 3" ) |
JCOE LSAW PIPES（ROLL BENDING）
|
Production Line |
This is the first large diameter longitudinal submerged arc welded (LSAW) pipe production line in China. The mill adopts continuous axis contorting J-C-O forming process with characteristics of high forming accuracy and efficiency as well as balanced distribution of forming stress. The mill has the advantages of wide specifications and can produce pipes in any size within its production range. |
|
Specifications |
Outside Diameter：Φ406mm- 1829mm (16" - 72" )
Wall Thickness：6.0-30mm（1/4" -11/6"） |
|
O.D. |
W.T. |
Length(m) |
|||||||
|
Inch |
mm |
Min.Yield Strength(Mpa) |
|||||||
|
Inch |
mm |
245(B) |
290(X42) |
360(X52) |
415(X60) |
450(X65) |
485(X70) |
555(X80) |
|
|
16 |
406 |
6.0-14.0 |
6.0-13.0 |
6.0-12.0 |
6.0-11.0 |
6.0-10.5 |
6.0-10.0 |
6.0-9.0 |
6.0-12.3 |
|
18 |
457 |
6.0-15.0 |
6.0-14.0 |
6.0-13.0 |
6.0-12.0 |
6.0-11.5 |
6.0-11.0 |
6.0-10.0 |
6.0-12.3 |
|
20 |
508 |
6.0-16.0 |
6.0-15.0 |
6.0-14.0 |
6.0-13.0 |
6.0-12.5 |
6.0-12.0 |
6.0-11.0 |
6.0-12.3 |
|
22 |
559 |
6.0-17.0 |
6.0-16.0 |
6.0-15.0 |
6.0-14.0 |
6.0-13.5 |
6.0-13.0 |
6.0-12.0 |
6.0-12.3 |
|
24 |
610 |
6.0-18.0 |
6.0-17.0 |
6.0-16.0 |
6.0-15.0 |
6.0-14.5 |
6.0-14.0 |
6.0-13.0 |
6.0-12.3 |
|
26 |
660 |
6.0-19.0 |
6.0-18.0 |
6.0-17.0 |
6.0-16.0 |
6.0-15.0 |
6.0-15.0 |
6.0-14.0 |
6.0-12.3 |
|
28 |
711 |
6.0-20.0 |
6.0-19.0 |
6.0-18.0 |
6.0-17.0 |
6.0-16.5 |
6.0-16.0 |
6.0-15.0 |
6.0-12.3 |
|
30 |
762 |
7.0-21.0 |
7.0-20.0 |
7.0-19.0 |
7.0-18.0 |
7.0-17.5 |
7.0-17.0 |
7.0-16.0 |
6.0-12.3 |
|
32 |
813 |
7.0-22.0 |
7.0-21.0 |
7.0-20.0 |
7.0-19.0 |
7.0-18.5 |
7.0-18.0 |
7.0-17.0 |
6.0-12.3 |
|
34 |
864 |
7.0-23.0 |
7.0-22.0 |
7.0-21.0 |
7.0-20.0 |
7.0-19.5 |
7.0-19.0 |
7.0-18.0 |
6.0-12.3 |
|
36 |
914 |
8.0-24.0 |
8.0-23.0 |
8.0-22.0 |
8.0-21.0 |
8.0-20.5 |
8.0-20.0 |
8.0-19.0 |
6.0-12.3 |
|
38 |
965 |
8.0-25.0 |
8.0-24.0 |
8.0-23.0 |
8.0-22.0 |
8.0-21.5 |
8.0-21.0 |
8.0-20.0 |
6.0-12.3 |
|
40 |
1016 |
8.0-26.0 |
8.0-25.0 |
8.0-24.0 |
8.0-23.0 |
8.0-22.5 |
8.0-22.0 |
8.0-21.0 |
6.0-12.3 |
|
42 |
1067 |
8.0-26.0 |
8.0-25.0 |
8.0-24.0 |
8.0-23.0 |
8.0-22.5 |
8.0-22.0 |
8.0-21.0 |
6.0-12.3 |
|
44 |
1118 |
9.0-27.0 |
9.0-26.0 |
9.0-24.5 |
9.0-23.5 |
9.0-22.8 |
9.0-22.0 |
9.0-21.0 |
6.0-12.3 |
|
46 |
1168 |
9.0-27.0 |
9.0-26.0 |
9.0-24.0 |
9.0-23.5 |
9.0-22.8 |
9.0-22.0 |
9.0-21.0 |
6.0-12.3 |
|
48 |
1219 |
9.0-28.0 |
9.0-27.0 |
9.0-25.4 |
9.0-24.0 |
9.0-23.5 |
9.0-23.0 |
9.0-22.0 |
6.0-12.3 |
|
52 |
1321 |
9.0-28.0 |
9.0-27.0 |
9.0-25.4 |
9.0-24.2 |
9.0-23.5 |
9.0-23.0 |
9.0-22.0 |
6.0-12.3 |
|
56 |
1422 |
10.0-29.0 |
10.0-28.0 |
10.0-26.0 |
10.0-24.5 |
10.0-23.8 |
10.0-23.0 |
10.0-22.0 |
6.0-12.3 |
|
60 |
1524 |
10.0-29.0 |
10.0-28.0 |
10.0-26.0 |
10.0-24.5 |
10.0-23.8 |
10.0-23.0 |
10.0-22.0 |
6.0-12.3 |
|
64 |
1626 |
10.0-30.0 |
10.0-29.0 |
10.0-27.0 |
10.0-25.4 |
10.0-24.8 |
10.0-24.0 |
10.0-23.0 |
6.0-12.3 |
|
68 |
1727 |
10.0-30.0 |
10.0-29.0 |
10.0-27.0 |
10.0-25.4 |
10.0-24.8 |
10.0-24.0 |
10.0-23.0 |
6.0-12.3 |
|
72 |
1829 |
10.0-30.0 |
10.0-29.0 |
10.0-27.0 |
10.0-25.4 |
10.0-24.8 |
10.0-24.0 |
10.0-23.0 |
6.0-12.3 |
Tolerance of Outside Diameter and Wall Thickness
|
Types |
Standard |
|||||
|
SY/T5040-2000 |
SY/T5037-2000 |
SY/T9711.1-1977 |
ASTM A252 |
AWWA C200-97 |
API 5L PSL1 |
|
|
Tube end OD deviation |
±0.5%D |
±0.5%D |
-0.79mm～+2.38mm |
<±0.1%T |
<±0.1%T |
±1.6mm |
|
Wall thickness |
±10.0%T |
D<508mm, ±12.5%T |
-8%T～+19.5%T |
<-12.5%T |
-8%T～+19.5%T |
5.0mm |
|
D>508mm, ±10.0%T |
T≥15.0mm, ±1.5mm |
|||||
Chemical Composition and Mechanical Properties
|
Standard |
Grade |
Chemical Composition(max)% |
Mechanical Properties(min) |
|||||
|
C |
Mn |
Si |
S |
P |
Yield Strength(Mpa) |
Tensile Strength(Mpa) |
||
|
GB/T700-2006 |
A |
0.22 |
1.4 |
0.35 |
0.050 |
0.045 |
235 |
370 |
|
B |
0.2 |
1.4 |
0.35 |
0.045 |
0.045 |
235 |
370 |
|
|
C |
0.17 |
1.4 |
0.35 |
0.040 |
0.040 |
235 |
370 |
|
|
D |
0.17 |
1.4 |
0.35 |
0.035 |
0.035 |
235 |
370 |
|
|
GB/T1591-2009 |
A |
0.2 |
1.7 |
0.5 |
0.035 |
0.035 |
345 |
470 |
|
B |
0.2 |
1.7 |
0.5 |
0.030 |
0.030 |
345 |
470 |
|
|
C |
0.2 |
1.7 |
0.5 |
0.030 |
0.030 |
345 |
470 |
|
|
BS En10025 |
S235JR |
0.17 |
1.4 |
- |
0.035 |
0.035 |
235 |
360 |
|
S275JR |
0.21 |
1.5 |
- |
0.035 |
0.035 |
275 |
410 |
|
|
S355JR |
0.24 |
1.6 |
- |
0.035 |
0.035 |
355 |
470 |
|
|
DIN 17100 |
ST37-2 |
0.2 |
- |
- |
0.050 |
0.050 |
225 |
340 |
|
ST44-2 |
0.21 |
- |
- |
0.050 |
0.050 |
265 |
410 |
|
|
ST52-3 |
0.2 |
1.6 |
0.55 |
0.040 |
0.040 |
345 |
490 |
|
|
JIS G3101 |
SS400 |
- |
- |
- |
0.050 |
0.050 |
235 |
400 |
|
SS490 |
- |
- |
- |
0.050 |
0.050 |
275 |
490 |
|
|
API 5L PSL1 |
A |
0.22 |
0.9 |
- |
0.03 |
0.03 |
210 |
335 |
|
B |
0.26 |
1.2 |
- |
0.03 |
0.03 |
245 |
415 |
|
|
X42 |
0.26 |
1.3 |
- |
0.03 |
0.03 |
290 |
415 |
|
|
X46 |
0.26 |
1.4 |
- |
0.03 |
0.03 |
320 |
435 |
|
|
X52 |
0.26 |
1.4 |
- |
0.03 |
0.03 |
360 |
460 |
|
|
X56 |
0.26 |
1.1 |
- |
0.03 |
0.03 |
390 |
490 |
|
|
X60 |
0.26 |
1.4 |
- |
0.03 |
0.03 |
415 |
520 |
|
|
X65 |
0.26 |
1.45 |
- |
0.03 |
0.03 |
450 |
535 |
|
|
X70 |
0.26 |
1.65 |
- |
0.03 |
0.03 |
585 |
570 |
|
LSAW steel pipe (Longitudinally Submerged Arc Welding abbreviated as LSAW) is a professional expression term for LSAW steel pipe. It uses a single medium and thick plate as the raw material, and the steel plate is pressed (rolled) into a tube blank in a mold or a forming machine. The pipe is produced by submerged arc welding and expanded diameter.
UOE LSAW pipe forming process:
The three main forming processes of UOE LSAW steel pipe forming process include: steel plate pre-bending, U forming and O forming. Each process adopts a dedicated forming press to complete the three processes of pre-bending the edge of the steel plate, U forming and O forming in sequence to deform the steel plate into a circular tube.
JCOE LSAW pipe forming process:
Forming: After several steps of stamping on the JCO forming machine, first half of the steel plate is pressed into a "J" shape, then the other half of the steel plate is pressed into a "J" to form a "C" shape, and finally pressurized from the middle to form An open "O"-shaped tube blank is formed.
Packing: Bundled,Plastic Caps Plugged,Waterproof Paper/Bag Wrapped
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