How to improve the durability of SSAW steel pipes?

To enhance the durability of SSAW (Spiral Submerged Arc Welding) steel pipes, exterior treatments are essential. Here are some effective methods.

Solvent and Emulsion Cleaning:

Use solvents and emulsions to clean the surface of the spiral pipe. This removes organic materials but does not eliminate rust, scale, or welding residue. Thus, this method serves as a supplementary cleaning step.

Mechanical Cleaning:

Utilize wire brushes, sandpaper, and similar tools to polish the surface of the pipe. This process effectively removes loose oxide scale, rust, and welding slag, preparing the surface for further treatment.

Chemical Pickling:

Apply chemical pickling to remove scale, rust, and old coatings. This method achieves a certain level of cleanliness and roughness, which is crucial for subsequent anti-corrosion treatments.

Abrasive Blasting:

Use a high-speed motor to drive spray (projection) blades, rotating at high speed to project abrasives such as steel grit, steel shots, wire segments, and minerals onto the pipe's surface. This method completely removes rust, oxides, and dirt. The strong impact and friction from the abrasives ensure the anti-corrosion steel pipe achieves the desired uniform roughness.

By employing these methods, the surface of SSAW steel pipes can be properly prepared and treated, significantly enhancing their durability and resistance to corrosion.