Accompanying engineering pipelines: Fluorine system; Ammonia system; Carbon dioxide system; Pipeline metal acid washing passivation technology, inner hole smooth and clean, inner hole not easy to rust, no impurities, anti-rust and anti-corrosion, good effect accompanying conveying medium. Surface spray painting anti-corrosion technology: oil-based paint, alkyd paint, water-based paint, epoxy zinc-rich primer, epoxy oxide paint, resin paint, high-temperature paint, etc. ~ Customized according to customer requirements. We can process materials: acid washing and passivation, blasting rust removal Sa2.5 standard, spray painting anti-corrosion treatment; Da Yawan Mobil R&D Center pipeline rust removal and anti-corrosionrochemical standard: Comply with the provisions of "SH/T3022-2019 Petrochemical Equipment and Pipeline Coating Anti-Corion Design Standard". Our company has passed the SGS inspection and certification. Hot-dip galvanized steel pipes and hot-dip galvanized low-temperature profilesLong-term dealer: Tianjin Steel Pipe, Jiangyin Yangtze River Steel Pipe, Linzhou Fengbao Steel Pipe, Shandong Panjin Steel, Baotou Steel, Anshan Steel, Yantai Baosteel, Yong’an Haoyu, etc., seamless steel pipe inventory of well-known. Customizable cold storage steel pipes; Accompanying national standard seamless pipe fittings: elbows, tees, reducers, custom U-bends, etc. Material 20# seamless steel pipe for fluid use, 16MnDG seamless steel pipe for low-temperature pipelines; Products supplied: each piece is, each piece is qualified! Long-term accompanying domestic well-known refrigeration and petrochemical enterprises construction project services! Complete inspection certificates and documents, 24 after-sales service. People-oriented, virtue first, Delphi is the most professional steel supplier!