Current label: Reliable square tube manufacturer
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Process of seamless rectangular pipe: ① main consumption process of hot rolled seamless rectangular pipe (main inspection process): preparation and inspection of pipe blank → heating of pipe blank → piercing → pipe rolling → reheating of raw pipe → sizing (reducing) → heat treatment → straightening of waste pipe → finishing → inspection (non-destructive, physical and chemical, bench inspection) → warehousing ② cold rolling (drawing) Main consumption process of seamless rectangular tube: blank preparation → pickling