Double-sided spiral seam submerged arc-welded steel pipes are produced using an automated production line, which can achieve continuous and high-speed welding. This production method not only improves production efficiency but also reduces worker intensity.
Double-sided spiral submerged arc-welded steel pipe utilizes a submerged arc welding process, which offers advantages such as high welding speed, deep penetration, and high weld quality. At the same time, by welding inside the pipe, the influence of the external environment on the welding quality can be avoided.
Since double-sided spiral seam submerged arc welded steel pipes use high-strength steel strips as raw materials, they have good mechanical properties such as tensile strength, yield point and elongation, and can meet various engineering needs.
Double-sided spiral seam submerged arc-welded steel pipes are widely used in various projects, such as bridges, buildings, pipelines, etc. Its excellent performance and good adaptability enable it to maintain a stable working state in various harsh environments.

Hot-dip galvanizing and cold-dip galvanizing are two common metal surface treatment processes. They are widely used in industrial production, mainly to improve the corrosion resistance, aesthetics and wear resistance of metals.

Hot-dip coating, also known as hot-dip coating, is a metal coating process carried out under high temperature conditions. During the hot-dip coating process, the part to be coated is immersed in a molten metal bath. The metal forms a metallurgical bond with the base metal at high temperature, thus forming a strong metal coating.

Cold plating, also known as electroplating, is a metal coating process performed at room temperature. During the cold plating process, a metal or alloy coating is deposited on the surface of the base metal through an electrochemical reaction. Cold plating does not involve a high-temperature melting process, but rather uses electric current to drive the reduction deposition of metal ions.

Main differences:
1. Operating temperature: Hot-dip galvanizing requires high temperature, while cold-dip galvanizing is performed at room temperature.
2. Bonding method: Hot-dip plating forms a metallurgical bond with strong bonding strength; cold-dip plating forms a mechanical or chemical bond with relatively weak bonding strength.
3. Coating thickness: Hot-dip galvanizing can produce thicker coatings, while cold-dip galvanizing usually produces thinner coatings.
4. Appearance and performance: Hot-dip coatings are usually rough, while cold-dip coatings have a smoother surface. Hot-dip coatings generally have better corrosion resistance and wear resistance than cold-dip coatings.
5. Application areas: Select the appropriate coating process based on the specific needs and performance requirements of the product. For example, for large structural parts, hot plating is more appropriate; while for precision parts and decorative coatings, cold plating may be a better choice.