Spiral pipe, also known as spiral steel pipe or spiral welded pipe, is the low carbon structural steel or low alloy structural steel belt according to a certain Angle of the spiral line (called forming Angle) rolled into tube billet, and then welded together tube seam made, it can be used for the production of narrow steel pipe diameter

  Spiral welded pipe is mainly used in domestic water engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, urban construction.Used for liquid conveying: water supply and drainage.For gas transport: gas, steam, liquefied petroleum gas.For structural use: as pile pipe, as a bridge;Wharves, roads, pipes for building structures, etc.

Theoretical weight formula of spiral tube :

         (outer diameter - wall thickness) * wall thickness *0.0246615= weight per meter (kg/m)

1.How long can make delivery?
For stock products, will make shipments in 5- 7 days after receiving deposit or receiving L/C; for products need new production for common materials, usually make shipments in 15-20 days; for products need new production for special and rare materials, usually need 30-40 days to make shipment.
2. Will the Test Certificate be certified to EN10204 3.1?
For the new production products no need furthur cutting or processing, will provide the Original Mill Test Certificate certified to EN10204 3.1; for the stock products and the products need cutting or furthur processing, will issue Certificate of Quality on our Company, It will show the original mill name and the original datas.
3. Once the received products found not comply with the products the contract demands, what will you do?
Once the received products found not comply with the products the contract lists, when receiving the pictures and the official documents and data from your side, if it is proved not comply, we will compensate the loss at first time.