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Big Size LSAW Steel Pipe

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Big size LSAW steel pipe also named Longitudinal Submerged Arc Welded steel pipe is our main products, and Big size LSAW steel pipe is used in many applications such as Pipe Piling, Fabrication, Utility & Oil, Sign Poles, Offshore Drilling and Production, Road Casing, Road Boring, Culverts and many more construction uses.

产品描述

Size OD: 350mm-1600mm

Thickness: 6mm-60mm

Length:5-12M

Steel Material: API 5L PLS 1 & PLS 2: GR.B X42 X46 X52 X56 X60 X65 X70 X80,etc

EN10219: S275JRH,S275J0H,S275J2H,S355JRH,S355J0H,S355J2H

A671/A672 CL10-CL13:CA55,B65,B70,C70

Usage: Oil Pipe, Casing Tube, Line Pipe and Fluid (Water, Gas) Transmission

Surface: Bared Black Painting, Anti-Corrosion Coating

Protector : Plastic cap

Package: Bundles, Bulk

Payment: L/C or T/T

Port of Shipment: Xingang,China


LSAW (Longitudinally Submerged Arc Welded Steel pipes) in leaflets plate as raw material, the steel plate in the mold or molding machine pressure (volume) into using double-sided submerged arc welding and flaring from production.


Longitudinal edges of steel plates are first beveled using carbide milling equipment. Beveled plates are then formed into a U shape using a U-press and subsequently into an O shape using an O-press. 

The UOE mill features the most advanced technology and process, achieves high production efficiency, stable product quality and is equipped with complete inspection equipments.

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.