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.
Size OD: 350mm-1600mm
Steel Material: API 5L PLS 1 & PLS 2: GR.B X42 X46 X52 X56 X60 X65 X70 X80,etc
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.
CREDIT STEEL INDUSTRIAL has 4 factorys, which located in Tianjin city and Heibei province, boasts its more than 500 staffs; professional technicians more than 100 people; owned 12 advanced production lines, full of inspection equipments and supporting energy saving facilities.
The production process of straight seam steel pipe is relatively simple. The main production processes include high-frequency welding straight seam steel pipe and submerged arc welding straight seam steel pipe.