Longitudinal welded pipes are produced by adopting the internationally advanced technology which has been introduced in recent days. 

Specifications of Longitudinal Welded Pipe
1) Outside Diameter: Ф15mm - 200mm
2) Wall Thickness: 1mm - 18mm 
3) Length: 3m - 12m
4) Steel Grade: Q195, Q235
5) Standard: SY/T5037-2000, GB/T9711.1-97, API Spec 5L
6) Packing: Plastic plugs in both ends, hexagonal bundles of max. 2000kg with several steel strips, wrapped in waterproof paper, PVC sleeve, and sackcloth with several steel strips, plastic caps or according to your requirement
7) Inspection: Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation), Technical Properties (Flattening Test, Bending Test, Blow Test, Impact Test), Exterior Size Inspection, Hydrostatic Test, X-ray Test

Features of Longitudinal Welded Pipe:
1) During the manufacture process, residual stress and resilience is very low
2) We can manufacture precise size of LSAW pipes
3) High quality and good services

Longitudinal Welded Pipe

The production lines could provide the steel pipes with the diameter of over 610mm and wall thickness of over 15mm that could not be manufactured by ERW steel pipe production line. LSAW steel pipes could be 2150mm in max., caliber and 30mm in max., wall thickness.

Take the western gas eastern transportation project as example, the project will need 964 thousand tons of LSAW pipes, only 141.6 thousand tons of which could be the production flow of LASW large-caliber thick-wall straight seam double-sided submerged arc welding steel pipes is: firstly mill the edge of medium plate and put it into pressure forming device, form it into a circle according to the mode of J.C.O, and then prowl it after seam butting by seam butting device and then start the double-sided submerged are welding. After nondestructive detection one by one, the products could be used as large-caliber liquid conveying pipe such as petroleum, natural gas and others. 

Packaging of Longitudinal Welded Pipe

Shanghai Metal Products are packed and labeled according to the regulations and customer's requests. Great care is taken to avoid any damage which might be caused during storage or transportation. In addition, clear labels are tagged on the outside of the packages for easy identification of the product I. D. and quality information.

1) Shanghai Metal Standard

2) Customization