Seamless Steel Tubes
Why the Pickling Process is Critical for Seamless Steel Tubes ? In the standardized manufacturing of seamless steel tubes, pickling is an indispensable and precise surface treatment process. It directly determines the aesthetic quality, machining precision, and service life of the piping. After hot rolling and heat treatment, seamless steel tubes naturally develop oxide scale, rust, and oil impurities. If not thoroughly removed, these contaminants severely compromise subsequent deep processing and end-use performance. 1. Complete Removal of Surface Impurities to Restore Pure Base Metal During high-temperature rolling and heat treatment, a hard oxide scale forms on the walls of seamless steel tubes. Additionally, flash rust and oil grease accumulate during storage and transit—impurities that physical grinding cannot completely eradicate. Remaining contaminants not only ruin the product's appearance but also mask minor surface defects, posing hi...