561/2000 Refrigeration engineering supporting pipelines: Freon system; carbon dioxide system; liquid ammonia system; pipeline metal pickling passivation treatment technology, smooth and clean bore, bore is not easy to rust, no impurities, rust and corrosion, the matching transportation effect is good. Pipeline surface anti-corrosion treatment technology: oil paint, alkyd paint, water-based paint, epoxy zinc-rich primer, hot dip galvanizing, etc. . Processing: pickling passivation, paint corrosion, hot galvanizing treatment; supporting the National Standard Seamless Pipe: Elbow, tee, custom U-bend and other pipe fittings. New Jiangyin Yangtze River, Baotou Steel, Anshan, Tianjin Seamless, Lin Zhou Fengbao, Shandong Panjin, Baosteel, material: 20 # seamless steel tube for fluid 16MnDG low temperature pipeline seamless steel tube; Products: branch inspection, root qualified! Perennial supporting domestic well-known refrigeration enterprise engineering! Report inspection, complete information, after-sales service 24 hours.