Q235 spiral welded pipe, Q345 lowest price spiral welded pipe, Q345 Q235 exclusive discounted prices spiral welded spiral pipe, Q345 spiral welded pipe. Tianjin Sewei steel production and sales spiral, longitudinally welded pipes, galvanized pipes, Rectangular Pipe, Rectangular Pipe with hot-dip galvanized, hot dip galvanized with a pipe, hot-rolled seamless tubes. Spiral Pipe spot size; diameter 159-1820, wall thickness 3.5-20, material Q235A, Q235B, Q345, L245, L290, X42, X52, X60, X70, X80, 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb. . Implementation of standards SY/T5037-2000, GB/T9711-1997. Spiral steel pipe mainly used in water engineering, petrochemical industry, chemical industry, power industry, agriculture, irrigation, urban construction, the development of China's 20 key products. Used for liquid delivery: water supply, drainage, sewage treatment works, lose mud, sea water. Used for gas transportation: gas, steam, liquefied petroleum gas. For structural use: for piling pipes for bridges; piers, roads, building structures with tubes, pipes and other marine piling.