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ERW LSAW Pipes

  • LSAW Steel Pipe
LSAW Steel Pipe

LSAW Steel Pipe

  • Product description: LSAW (Longitudinally Submerged Arc Welded Steel pipes) in leaflets plate as raw material. Hong Yue Stainless Steel is one of the leading manufacturer to supply high quality LSAW (Longitudinally Submer
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Range of LSAW Steel pipes for oil and gas pipeline

Legnth:6-12.15m Material: API 5L Gr.B-X80, Standard: API spec. 5L; GB9711.1-97

LSAW STEEL PIPE

Remarks:non-standard dimensions pipes can be produced to customer specifications.


Range of LSAW pipes applied in construction

Range of roller pipes: Outer diameter: Ф1200-3800mm | Wall thickness: 12-120mm | Unit length (max) 3.2m.

LSAW STEEL PIPE FOR CONSTRUCTION

Note: The specification in the table is available to Q345. 

Remarks:non-standard dimensions pipes can be produced to customer specifications.

Range of Roller Pipe
Range of roller pipes: Outer diameter: Ф1200-3800mm  |  Wall thickness: 12-120mm  |  Unit length (max) 3.2m.

Number

Technical parameter

Unit

HQW11s-120X3200

1

Material yield limited

Mpa

245

345

345

2

Wall thickness

mm

120

100

110

3

Maximum pre-bending thickness

mm

110

90

100

4

Maximum width of steel plate

mm

3200

3200

3200

5

Minimum diameter of fully loaded rolling steel plate

mm

2500

1600

1600



Advantages of LSAW steel pipe

In the long-distance pipeline construction, with steel lines account for a large proportion, under normal circumstances, 35% to 40% of line pipe investments accounted for total project investment. 
How to choose a reasonable price, excellent performance of the pipe is particularly important, a reasonable choice to save the pipe construction investment, to facilitate the construction and safe operation of the pipeline system has a very important impact. LSAW steel pipe advantage make it can be widely used for its unique long-distance oil and gas pipelines.

Advantages of LSAW steel pipe are:
(1) without the unwind process, the base material indentation, scratch less.
(2) the wrong side, slotted, and other easy-to-diameter perimeter control, excellent welding quality.
(3) the elimination of flaring basically does not exist residual stress after stress. 
(4) because it is a straight line weld, the weld is short, little risk of defects. 
(5) after expanding, pipe geometry accuracy is improved greatly facilitate the on-site welding. 
(6) for a straight seam, less impact on the quality of anti-corrosion coating materials.




Application

The pipes are mainly used as long distance transportation pipeline for oil, gas, liquid coal etc. on land and offshore. 
And also can be applied as construction pipes on offshore platform, power station, petrochemistry and city construction etc.

 

Major characteristics
① The pipe internal stress is very small and uniformly distributed after the full- length expansion. T
he corrosion and cracking of the pipe owing to stress can be effectively prevented. 
The application of welding on site is very easy because of the high dimension precision; 
② The inside and outside welding are performed after the tack welding , 
so the welding process is very stable with good weld quality; 
③ The NDT is easy to perform on the weld during production and field operation as well;
④ The length of the weld is shorter than that of the non-longitudinal seam pipe, so the probability of defects occurrence is very low;
⑤ The coverage of the pipe specification is very wide. The pipe can be either in very large diameter with thick wall or in very small diameter with thick wall.


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