The spiral welded pipe direct sales produced by Zhongyuan Pipeline Manufacturing Co., Ltd. are welded in the state of the spiral movement of the pipe body. The circular motion of the steel pipe will cause the molten iron to flow and affect the weld formation, select the appropriate offset. As an important part of steel pipe products, spiral welded submerged arc welded steel pipe plays an important role in the development of the national economy. At present, the overall development trend of the entire steel pipe industry is that the output growth rate of spiral welded pipes (direct sales of spiral welded pipes produced by Zhongyuan Pipeline Manufacturing Co., Ltd.) is faster than that of seamless steel pipes. pipeline. In the field of competition for the seamless pipe market, the hot-dip galvanized pipe belongs to the spiral welded pipe type, and the ERW spiral welded pipe dominates. In the use of long-distance oil and gas pipelines and urban gas pipelines, direct submerged arc welded pipes and spiral arc welded pipes compete for the market.

The spiral welded pipe produced by Zhongyuan Pipe Manufacturing Co., Ltd. has a long history of direct sales. The spiral welded pipe was introduced in 1888, and its welding quality has been greatly improved after double-sided welding in 1960. Spiral welded steel pipe device is mainly used to produce steel pipe with outer diameter, wall thickness of 5~16mm, and length of 6~35m, which is used for pipes, pipe piles and steel pipes for certain mechanical structures. Now the domestic production of spiral welded steel pipe specifications can reach 3620mm. Most of the spiral steel pipes produced in China are less than 1.8 meters in diameter, and the vast majority are less than 1220. The diameter of a single domestic manufacturer can reach 2500mm, and few manufacturers have a diameter of 3200mm. In the past, large-caliber movements could not be found in search engines. The maximum diameter of the spiral welded pipe direct sales produced by Zhongyuan Pipeline Manufacturing Co., Ltd. can reach up to 3620mm, which has created a record of the largest diameter of the spiral welded pipe direct sales produced by Zhongyuan Pipeline Manufacturing Co., Ltd. Diameter 3620mm. Today, the largest caliber advertised in search engines is 3620mm.