Shanghai ShengQiu Materials Co., Ltd

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...

Cold Drawn/Rolled Seamless Precision Steel Tube Standard: DIN2391, EN10305 Grade: ST37.4, ST35, ST45, ST52 Delivery Condition: NBK Surface Treatment: Bright, Galvanized(yellow, white, colorful), phosphated Welcome to send us inquiry for competitive price at any time.   Shanghai ShengQiu Materials Co., Ltd Email:  sales@sqsteelpipe.com WhatsApp: 008613761124029 Website:  www.sqsteelpipe.com

  High-precision seamless steel tube   Process introduction: High-quality carbon steel, fine-rolled, non-oxidizing bright heat treatment (NBK state), non-destructive testing, the inner wall of the steel pipe is brushed with special equipment and subjected to high-pressure washing, the anti-rust oil on the steel pipe is used for anti-rust treatment, and the two ends are sealed for dust-proof treatment.   Main feature: The inner and outer walls of the steel pipe have high precision and high smoothness. After heat treatment, the steel pipe has no oxide layer, and the inner wall has high cleanliness. The steel pipe bears high pressure, cold bending does not deform, flaring and flattening without cracks, and can be subjected to various complex deformation and mechanical processing treatments. Steel pipe color: bright white with high metallic luster.   The main application: Automobile steel pipes, users who have high requirements on the precision and smoothness...