Spiral welded steel pipe
Spiral welded steel pipe is made of the low-carbon carbon structural steel or low alloy steel strip according to the angle of the spiral line (called the forming angle) rolled into the tube, pipe and then welded together made, it can narrowstrip the production of large diameter steel pipe.Spiral welded pipe for oil and gas pipelines, its specifications OD * wall thickness. Spiral welded side welding and double-sided welding, the pipe should ensure that the hydrostatic test, the weld tensile strength and cold bending performance to meet the requirements.
Spiral welded steel pipe in China is mainly used in water engineering, petrochemical industry, chemical industry, power industry, agricultural irrigation, urban construction. The transport of liquids: water supply, drainage. Gas transportation: gas, steam, liquefied petroleum gas. For the structure: for pipe piling for bridges; docks, roads, building structure, pipe, etc.
Date：2012-05-12 10:07:18 From：www.hnssd.com