ASTM A53 Gr. A seamless steel pipe can improve material utilization, simplify manufacturing process, and save materials and processing time. Sometimes ASTM A53 Gr. A seamless steel pipe will be cleaned before use, especially the steel pipe for hydraulic system, while pickling is generally used for ASTM A53 Gr. A seamless steel pipe cleaning.
ASTM A53 Gr. A seamless steel pipe pickling process
1. Sulfuric acid, hydrochloric acid and other mixed acids were soaked to remove oxide scale and rust.
2. Rinse with tap water to remove residue and acid.
3. Sodium carbonate and other alkaline solution neutralization, make it neutral or weak alkaline.
4. ASTM A53 Gr. A seamless steel pipe is passivated with sodium nitrite for short-term antirust treatment.
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