Seamless Steel Pipe Pickling

The Mandatory Nature and Core Role of Seamless Steel Pipe Pickling

 

Pickling is an indispensable pre-treatment step in the manufacturing of seamless steel pipes, serving as the foundation for guaranteeing product quality and service life.

 

1.Core Mission and Risk Elimination

 

The iron oxide scale on the surface of hot-rolled pipes must be removed, otherwise, it leads to multiple risks:

 

1)Impedes QC: The scale masks surface defects like cracks and hairlines, preventing accurate assessment of the material's true condition.

2)Increases Costs: The hard scale causes severe wear on the dies required for subsequent cold working (cold drawing/rolling).

3)Safety Hazard: Residual oxides can become corrosion initiation sites or stress concentration points during use, severely impacting safety and reliability in critical fields like hydraulic systems.

 

2.Process Enablement and Performance Enhancement

 

Pickling is especially crucial for pipes requiring further cold working:

·       Lubrication Foundation: After pickling, phosphating, and saponification, the pipe surface forms an effective lubricant carrier that dramatically reduces friction, preventing surface scoring.

·       Quality Guarantee: Ensures the smooth execution of cold working, ultimately producing finished pipes with high precision and excellent surface finish.

·       Structural Optimization: Pickling helps eliminate micro-stresses, homogenizing the material structure, thus improving the stability of overall mechanical properties and laying the foundation for subsequent heat treatment.

 

In summary: Although pickling is an intermediate step, its status is paramount, as it directly determines the product's purity, processing viability, and final reliability.

 

Shanghai ShengQiu Materials Co., Ltd

WhatsApp: 008613761124029

Email: sales@sqsteelpipe.com

Website: www.sqsteelpipe.com