Spiral steel pipe is made by steel coil, extrusion forming under the normal temperature, then taken the technology of double wire and double-faced submerged-arc welded.Spiral steel pipe, also known as spiral or helix spiral steel pipe, is a low-carbon steel or low-alloy structural steel strip at a certain helix angle (called molding angle) rolled into a tube, and the tube is made of welded joints It can be produced with a narrow strip of large diameter pipe.During molding process of spiral welded steel pipe, steel plate has uniform deformation and light residual stress, thus the surface has no scratches. Spiral steel pipe has more flexible thicknesses and diameters, especially in making high-grade thick pipes with small or medium aperture, these techniques has incomparable advantages in satisfying your needs.

Spiral welded pipes are mainly used in water supply engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation and urban construction. It is one of the twenty key products independently developed by our country. For liquid transportation purposes: water supply, drainage, sewage treatment engineering, mud transportation, ocean water transportation. For gas delivery: gas, steam, liquefied petroleum gas. Structural use: as a piling pipe, as a bridge; docks, roads, building structures, marine piling pipes. Spiral welded pipes must undergo strict physical and chemical tests before being put into use. Spiral submerged arc welded pipes for pressurized fluid transportation are mainly used for oil and natural gas pipelines. The steel pipe has strong pressure bearing capacity, good plasticity, and is convenient for welding and processing. Spiral submerged arc welded steel pipes for low-pressure fluid transportation generally use double-sided automatic submerged arc welding or single-sided welding methods for submerged arc welded steel pipes for conveying low-pressure fluids such as water and gas, air and steam.