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Hebei Allland Steel Pipe Manufacturing Co.,Ltd

DSAW/ LSAW Steel Pipe

LSAW steel pipe (Longitudinal double submerge arc welding steel pipe/DSAW steel pipe) is one kind of the SAW pipes,it is made of steel plates of hot rolled by JCOE or UOE forming technology. Our company usually produce the pipes by JCOE  technology,the JCOE means the forming process, as J shape firstly, then C shape, and then O forming,E forming process at last, while inner & outside welding and cold expansion after welding. Compared with UOE LSAW pipes, our productive line could produce more sizes,OD406mm-1620mm, pipe length: 2m-18m,the thcikness from 6.35mm-60mm and our LSAW pipes has its superiority:


• Feature: Large diameter,thick wall,high pressure&low temperature resistance.
• Test: Chemical Component Analysising, Mechanical Properties (Ultimate tensile strength,Yield strength, Elongation), Technical Properties (Flattening Test,Blow Test, Impact Test,DWT test),Exterior Size Inspection, Hydrostatic Test, X-ray Test,UT test.

• The basical metal and welding metal were tested according to the pipe specification API SPEC 5L,ASTM,EN,DIN ,GOST standard,or other standard.

•Our LSAW pipes could also be welded with flanges ,lifting eyes or other parts according to the requirement of the clients.


Our LSAW steel pipe (Longitudinal double submerge arc welding steel pipe/DSAW steel pipe)are Widely used for liquid delivery,such as oil,gas,water transportation and seashore project,or ground constructions. Our products has been exported to many other countries such as :America,Russia,Canada, Pakistan,India, Africa and so on. And we keep good relationship with many national oil company ,such as EGPC, PETROJET, PDVSA, NNPC, CNPC, ect.

  • LSAW Steel Pipe with Flanges

    LSAW Steel Pipe with Flanges

    Our Allland company could also process the LSAW steel pipes with flanges,or weld the lifting eyes on the pipes according to the requirement of the clients.
  • Large Diameter LSAW Pipe

    Large Diameter LSAW Pipe

    Our LSAW steel pipes are good at producing the heavy wall thickness and large diameter LSAW /DSAW pipes,it is our advantage of LSAW technology,other pipes could not reach this point.
  • Heavy Wall Thickness DSAW Pipe

    Heavy Wall Thickness DSAW Pipe

    Our company also keep improving our production ability, we have brought in new equipment to make more sizes, now we could supply the heavy wall thickness 60mm.