It is cut into narrow strip steel from a steel strip, and then cold processed with a mold to crimp it into a tube. The high-frequency submerged arc welding machine then welds a pipe seam. Due to the difference in welding process, it is divided into resistance welded pipe and automatic arc welded pipe. Due to the different welding form, it is divided into two types: straight seam welded pipe and spiral welded pipe.
China: GB/T3091-2015 Galvanized welded steel pipe for low pressure fluid transportation
GB/T14291-2006 (Welded steel pipe for mining fluid transportation)
American Standard: ASTM A252-98 (R2002) Standard Specification for Welded Steel and Seamless Steel Pipe Piles
German standard: DIN1615-84, DIN1626-84, DIN1628-84 non-alloy steel welded round pipe technical delivery conditions
Japanese standard: JIS-G3452/3457
American Standard: ASTM A53/A283-D
German standard: (st33)1.003
Japanese standard: GGP/STRY41
Welded steel pipes are often used to transport fluids and powdered solids and exchange heat. It is also an economical steel. Using steel pipes to manufacture building structure grids, pillars and mechanical supports can reduce weight, save metal by 20-40%, and increase construction speed.
HDT is a professional manufacturer and supplier of welded steel pipes. Provide high-quality and low-cost welded steel pipes. We manufacture and produce all types of welded steel pipes. If you have special needs, please contact us.
There are many welded steel pipe manufacturers in China. Welded steel pipes from China are of high quality and low price. HDT steel is one of the most powerful companies in welding steel pipes. You can customize welded steel pipes of different standards according to the requirements of your order. If you are looking for a welded steel pipe manufacturer, we are your best choice.