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Home > Steel Pipe > LSAW Steel Pipe
LSAW Steel Pipe
LSAW Steel Pipe LSAW Steel Pipe LSAW Steel Pipe
  • LSAW Steel Pipe

LSAW Steel Pipe

LSAW (Longitudinal double submerge arc welding , also called SAWL pipe ) carbon steel pipe is a type of SAW pipe made of steel plates that were hot rolled by JCOE or UOE forming technology.
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Description Dimensions & Sizes Production & Testing FAQS
Description
LSAW Steel Pipe
LSAW Steel Pipe Supply condition
Out Diameter：355.6mm – 1820mm
Wall Thickness：5.0 – 50mm
Length：3 – 12.5m
Pipe End ：Square Ends, Beveled End
Steel Grade：
API 5L  PSL1/PSL2    Gr.A,Gr.B,X42,X46,X52,X56,X60,X65,X70,X80,
EN10219: S275JRH,S275J0H,S275J2H,S355JRH,S355J0H,S355J2H
A671/A672 CL10-CL13:CA55,B65,B70,C70
ASTM A252: GR.2/GR.3
Surface：Fusion Bond Epoxy Coating, Coal Tar Epoxy, 3PE, Vanish Coating, Bitumen Coating, Black Oil Coating As Per Customer’s Requirement
Test：Chemical Component Analysis, Mechanical Properties (Ultimate Tensile Strength, Yield Strength, Elongation), Technical Properties (Flattening Test, Bending Test, Blow Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, X-ray Test.
Mill Test Certificate: EN 10204/3.1B

Standard LSAW Steel Pipe
Standard Specification
ASTM A53 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
API 5L Specification for Line Pipe(Two levels PSL 1 and PSL 2 of seamless and welded steel pipes for use in pipeline transportation systems in the petroleum and natural gas industries.)
A252 Standard Specification for Welded and Seamless Steel Pipe Piles
A500 Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes
A139 Standard Specification for Electric-Fusion (Arc)-Welded Steel Pipe (NPS 4 and Over)
A672 Specification for Electric-Fusion-Welded Steel Pipe for High-Pressure Service at Moderate Temperatures

Chemical Analysis and Mechanical Properties of LSAW Steel Pipe
Standard Grade Chemical Composition(max)% Mechanical Properties(min)
C Mn Si S P Yield Strength Tensile Strength
(Mpa) (Mpa)
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
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 - - 0.05 0.05 225 340
ST44-2 0.21 - - 0.05 0.05 265 410
ST52-3 0.2 1.6 0.55 0.04 0.04 345 490
JIS G3101 SS400 - - - 0.05 0.05 235 400
SS490 - - - 0.05 0.05 275 490
GB/T700-2006 A 0.22 1.4 0.35 0.05 0.045 235 370
B 0.2 1.4 0.35 0.045 0.045 235 370
C 0.17 1.4 0.35 0.04 0.04 235 370
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 0.03 0.03 345 470
C 0.2 1.7 0.5 0.03 0.03 345 470

Tolerance of Outside Diameter and Wall Thickness of LSAW Steel Pipe
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

Application of LSAW Steel Pipe
LSAW Steel Pipe base on its advantage of high reliability and safety performance, the LSAW pipe is widely used in various pipelines engineering and construction, even under the most severe condition, and also can be used in engineering of chemical industry, electric power, irrigation, construction and piling etc.



Dimensions & Sizes
LSAW Steel Pipe Dimension and Sizes 
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





Production & Testing
LSAW Steel Pipe Munufacturing Process
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.





FAQS