LSAW Pipe
LSAW Is A Large Straight Seam Welded Pipe, Its Main Molding Methods Are JCOE and UOE.
The Raw Material Is Steel Plate, Through The Way Of Rolled Pipe Bar From A Flat Steel Plate Rolled Into A Curved Shape.
Non-Destructive Testing And Weld Inspection Of The Finished Product Is Usually Required. The Finished Product Has Only One Welded Seam.
Generally, The Steel Pipe Outside Will Be 3LPP Anti-Corrosion, So That Buried In The Ground Will Have A Longer Service Life.
Recommended Products By Balingsteel
Oversized Large Diameter LSAW Pipe
Balingsteel Has 4 Lines of LSAW Pipe Production. 1~3 Production of Conventional Caliber for 26 Inch to 48 Inch, 4 Production Line Main Need to Produce Large Diameter, We Have Produced the Largest Caliber of 2540mm.
If Your Project Is Encountering the Trouble of Oversized Diameter, Please Feel Free to Contact Us for Help.
Thick Walls
Balingsteel Customizes the Production of LSAW Pipes with Thicknesses Exceeding 100mm Thickness Through In-House Research and Development.
Our LSAW Pipes Certified by ABS Are Widely Used in Marine Engineering and Large Structural Pipes.
We Offer Your LSAW Pipes with Extra Thick Wall Thickness. Welcome to Contact Us!
Extra Long Size
Balingsteel Has Line 4 Dedicated to the Production of Extra-Long Sized Lsaw Pipes.
Theoretically, Our LSAW Steel Pipe Can Come in Unlimited Lengths as Long as You Are Comfortable Shipping and Receiving It.
The Longest Length We Have Successfully Delivered So Far Is 58 Meters.
Specialized Transportation
Balingsteel’s Production Base Is Only 20km from the Nearest Port, So No Matter How Long Your Pipe Is, We Can Deliver Your LSAW Pipe Safely to the Port for Loading onto Bulk Carriers.
If You Have Any Questions About the Transportation of Long Pipelines, Please Do Not Hesitate to Contact Us.
Application Industry
Oil and Gas Industry
- LSAW Pipelines Are Connected to the Pipeline Lines by High-Quality External Corrosion Protection Such as 3LPP and 3LPE.
Offshore Construction Industry
- LSAW Piping Is Widely Used in Marinas, Coastal Areas, Bridges, and Oil Platforms, And with Its Large Diameters and Customized Lengths, It Can Be Used in Conjunction with Other Building Materials, Such as Cement, To Effectively Reinforce Foundations.
LSAW Pipe Usage
ASTM A252 Steel Pile
ASTM A252 Is the American Standard for Welded Pipe Piles, Which Are Used in Large-Scale Construction Projects Such as Wharves, Rivers, and Bridges.
Balingsteel Can Supply ASTM A252 Grade(1,2 And 3) Steel Pile, OD up to 100 Inches, WT up to Sch160. Request Us Quotation Today!
EN10219-1 Structural Steel Pipes
EN10219 Is the European Standard for Cold-Formed Welded Hollow Sections. Balingsteel Stocked S235JRH, S275JOH, S275J2H, S355JOH Grade Steel Pipe Yearly and Available Size from 4inch-56inch, Thickness from 6mm-150mm.
Contact Us Now for the Latest Quote for EN10219 Structural Steel Pipe!
API 5L/ISO3183 PSL1 and PSL2 LSAW Line Pipe
Balingsteel Offers API 5L PSL1 PSL2 Gr.A, Gr.B, X42, X46, X52, X56, X70, L210, L245, L290, L360, L450 etc…Standards LSAW pipe, Our Production Range OD 219-2032m, WT 6-50m m, Length 5.8/6/11.8/12 or Can Customized as per Your Order.
If You Have Any Inquiry About Our LSAW Pipe, Please Do Not Hesitate to Contact Us Now!
FBE/3LPE LSAW Pipe
Balingsteel’s LSAW Pipe Can Coated with Fusion Bonded Epoxy Powder (FBE) or Three-Layer Polyethylene (3LPE), It Can Greatly Improve the Corrosion Resistance of Lsaw Pipe.
Our FBE Coated Thickness Range from 100um-800um, and 3LPE Thicknes Range from 2.5mm-4.2mm, We Are Available 7*24 Hours, Contact Us by Email!
Types of LSAW Pipes
Depending on the Type of Molding LSAW Is Divided into JCOE and UOE Pipes.
UOE LASW Pipe Processing
The UOE Molding Method Is to Press the Raw Material into a U-Shape, Then into an O-Shape, And Finally to Perform Internal and External Submerged Welding.
It Is the Most Mature, Efficient and High Quality Production Method.
Balingsteel Can Produce UOE Pipes from 8 to 60mm.
JCOE LASW Pipe Processing
The JCOE Molding Method Is More Complicated Than the UOE Molding Method, In Which the Raw Materials Are Welded Separately from the J-Type to the C-Type and Finally to the O-Type.
JCOE Forming Steel Pipe Has a Larger Caliber and Thicker Thickness. Balingsteel Can Produce Ultra-Thick Steel Pipe over 100mm.
Manufacturing Process of LSAW
- Manufacturing Flow Chart
Manufacturing Flow Chart
1. Plate Inspection: After the Steel Plate Used for Manufacturing Large Diameter Submerged Arc Welded Lsaw Steel Pipe Enters the Production Line, The Whole Plate Is Firstly Subject to Ultrasonic Inspection;
2. Edge Milling: The Two Edges of the Steel Plate Are Milled on Both Sides by the Edge Milling Machine, To Achieve the Required Width, Parallelism of the Plate Edges and the Shape of the Bevel;
3. Pre-Bending: Pre-Bending the Plate Edges with a Pre-Bending Machine to Make the Plate Edges Have Curvature as Required;
4. Forming: In the Jco Molding Machine or Uo Molding Machine, First Half of the Pre-Bent Steel Plate Through Several Step Stamping, Pressed into a “j” Shape, And Then the Other Half of the Plate Is Also Bent, Pressed into a “c” Shape, And Finally Formed into an Open “o” Shape
5. Pre-Welding: The Formed Lsaw Steel Pipe Is Joined Together and Continuously Welded by Gas Shielded Welding (Mag);
6. Internal Welding: Vertical Multi-wire Submerged Arc Welding (Up to Four Wires) on the Inside of the Straight Seam Steel Pipe for Welding;
7. External Welding: Using Longitudinal Multi-wire Submerged Arc Welding on the Outside of the Straight Seam Submerged Arc Welded Steel Pipe; 8. Ultrasonic Inspection ⅰ: 100% Inspection of the Internal and External Weld of the Straight Seam Welded Steel Pipe and the Parent Material on Both Sides of the Weld;
9. X-Ray Inspection ⅰ: 100% X-Ray Industrial Television Inspection of the Internal and External Weld Seam, Using an Image Processing System to Ensure the Sensitivity of the Flaw Detection;
10. Expansion: The Full Length of the Submerged Arc Welded Straight Seam Steel Pipe Is Expanded to Improve the Dimensional Accuracy of the Steel Pipe and to Improve the Distribution of Stress in the Steel Pipe;
11. Hydrostatic Test: The Expanded Steel Pipe Is Inspected One by One on the Hydrostatic Testing Machine to Ensure That the Steel Pipe Reaches the Test Pressure Required by the Standard, And the Machine Has the Function of Automatic Recording and Storage;
12. Chamfering: The Inspection of Qualified Steel Pipe End Processing, To Achieve the Required Pipe End Bevel Size;
13 Ultrasonic Inspection ⅱ: Again Root by Root Ultrasonic Inspection to Check the Lsaw Steel Pipe in the Expansion, Hydraulic Pressure May Produce Defects;
14. X-Ray Inspection ⅱ: X-Ray Industrial TV Inspection and Tube End Weld Filming of Steel Pipe After Expansion and Hydrostatic Testing;
15. Magnetic Particle Inspection of Pipe Ends: This Inspection Is Carried out to Detect Defects in Pipe Ends;
16. Storage: Into the Finished Product Warehouse for Proper Storage
Ps: If There Are Special Requirements Such as Anticorrosion and Coating: The Qualified Steel Pipe Will Be Anticorrosive and Coated According to User Requirements.
Different Welding Methods for ERW and LSAW.
LSAW Pipe Is Welded by Double-Sided Submerged Welding, Which Is Filled with Other Materials to Weld the Weld Seam. The Chemical Composition and Mechanical Properties of the Weld May Be Slightly Different from the Pipe Body.
ERW Steel Pipe Is High-Frequency Resistance Welding, The Weld Seam and the Pipe Body Maintain the Same Material.
LSAW and SSSAW Have Different Welding and Molding Methods.
LSAWPipe Is Formed by a Straight Seam Welding.
SSAW Pipe Is Formed by Spiral Welding.
Different Uses Have Different HS Code Codes. Such as 7305 for the Oil and Gas Industry, and 7308 for Construction and Structures. These Codes Are for Your Reference Only, If You Need Detailed Information Please Contact Us!